Spaces:
Running
Running
File size: 80,529 Bytes
999eb85 d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 685ad0d d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 685ad0d d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 d27b1ab 999eb85 685ad0d 999eb85 685ad0d 999eb85 d27b1ab 685ad0d d27b1ab 999eb85 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 | <!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>llm.js on current llama.cpp — browser demo (WASM, CPU)</title>
<style>
:root { color-scheme: dark; }
/* .workspace/.panel set display:grid/flex, which beats the UA [hidden] rule:
without this the sidebar stayed visible on the template and model tabs and
pushed their panel below it. */
[hidden] { display: none !important; }
body { font: 15px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; background: #14161a; color: #e6e6e6;
max-width: 1080px; margin: 0 auto; padding: 20px 20px 64px; }
h1 { font-size: 19px; font-weight: 600; margin: 0 0 4px; }
h2 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
color: #9aa1ab; margin: 0 0 10px; }
h3 { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
color: #7f8792; margin: 0 0 6px; }
small, .muted, .hint { color: #8a8f98; }
.hint { font-size: 12px; margin: 0 0 10px; }
section.panel { border: 1px solid #2a2f37; border-radius: 10px; margin: 0 0 16px;
padding: 14px 16px; background: #171a1f; }
input[type=text], input[type=password], textarea, select {
width: 100%; box-sizing: border-box; background: #0d0f12; color: #e6e6e6;
border: 1px solid #2a2f37; border-radius: 6px; padding: 8px 10px; font: inherit; }
textarea { min-height: 84px; resize: vertical; }
label.row { display: flex; align-items: center; gap: 8px; margin: 10px 0 0; color: #cfd4da; }
label.row input[type=number] { width: 90px; background: #0d0f12; color: #e6e6e6; border: 1px solid #2a2f37;
border-radius: 6px; padding: 6px 8px; font: inherit; }
.buttons { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
button { background: #2f6fed; color: #fff; border: 0; border-radius: 6px; padding: 8px 14px;
font: inherit; cursor: pointer; }
button.secondary { background: #2a2f37; color: #cfd4da; }
button.danger { background: #5a2530; color: #ffb4c0; }
button:disabled { opacity: .45; cursor: default; }
#bar { height: 8px; background: #0d0f12; border: 1px solid #2a2f37; border-radius: 999px; overflow: hidden; margin: 10px 0 8px; }
#barFill { height: 100%; width: 0%; background: linear-gradient(90deg, #2f6fed, #5aa0ff); transition: width .15s linear; }
/* --- model ingest (Models tab) ---------------------------------------- */
/* separate from the engine bar on purpose: getting bytes into the library
and starting a context are different operations with different outcomes */
#ingest { border: 1px solid #2a2f37; border-radius: 8px; background: #171a1f;
padding: 9px 11px; margin: 0 0 12px; }
#ingest.error { border-color: #5a2530; }
.ingest-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline;
font-size: 12px; color: #cfd4da; margin-bottom: 7px; }
#ingestPercent { color: #8a8f98; font-size: 11px; }
#ingestBar { height: 8px; background: #0d0f12; border: 1px solid #2a2f37;
border-radius: 999px; overflow: hidden; }
#ingestFill { height: 100%; width: 0%; background: linear-gradient(90deg, #6752c8, #a98bff);
transition: width .15s linear; }
#ingest.error #ingestFill { background: #c05050; }
#status { color: #9aa1ab; font-size: 13px; min-height: 20px; }
#out { white-space: pre-wrap; word-break: break-word; background: #0d0f12; border: 1px solid #2a2f37;
border-radius: 6px; padding: 12px; min-height: 140px; }
#stats { color: #8a8f98; font-size: 12px; margin-top: 10px; min-height: 18px; }
details { margin-top: 12px; }
summary { cursor: pointer; color: #9aa1ab; font-size: 13px; }
#log { max-height: 180px; overflow: auto; background: #0d0f12; border: 1px solid #2a2f37; border-radius: 6px;
padding: 8px 10px; margin-top: 8px; font-size: 12px; color: #8a8f98; white-space: pre-wrap; }
#log .logline { display: block; }
#log .warn { color: #d8b25f; }
#log .err { color: #e07070; }
.pill { display: inline-block; padding: 1px 7px; border-radius: 999px; background: #23303f; color: #9cc3ff;
font-size: 11px; margin-left: 6px; }
/* --- top bar ---------------------------------------------------------- */
.appbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
.appbar label { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: #8a8f98; }
/* a flex item refuses to shrink below its longest option, so a long model name
would push the whole page sideways on a phone; min-width lets it ellipsize */
.appbar select { flex: 1 1 260px; width: auto; min-width: 0; max-width: 100%; }
.appbar button { padding: 7px 12px; font-size: 13px; }
#currentModel { flex: 1 1 100%; font-size: 12px; }
/* --- engine launch row (top bar) -------------------------------------- */
.enginebar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin-top: 8px;
padding: 7px 10px; border: 1px solid #2a2f37; border-radius: 8px; background: #171a1f; }
.enginebar-title { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: #8a8f98; }
.ef { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #bfc5cd; white-space: nowrap; }
.ef input[type=number] { width: 66px; background: #0d0f12; color: #e6e6e6; border: 1px solid #2a2f37;
border-radius: 6px; padding: 3px 6px; font: inherit; font-size: 12px; }
.ef select { width: auto; background: #0d0f12; color: #e6e6e6; border: 1px solid #2a2f37;
border-radius: 6px; padding: 3px 5px; font: inherit; font-size: 12px; }
.enginebar #mmprojSelect { width: 118px; font-size: 12px; }
.ef.check { gap: 5px; }
.ef input[type=checkbox] { margin: 0; }
#threadsHint { flex: 1 1 100%; margin: 0; font-size: 11px; }
.enginebar details { flex: 1 1 100%; margin: 0; }
.enginebar summary { font-size: 11px; }
.enginebar details p { margin: 6px 0 0; }
.enginebar .hint { margin: 0; }
/* --- tabs ------------------------------------------------------------- */
.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin: 18px 0 0; border-bottom: 1px solid #2a2f37; }
.tab { background: transparent; color: #9aa1ab; border: 1px solid transparent; border-bottom: 0;
border-radius: 8px 8px 0 0; padding: 8px 14px; font-size: 13px; }
.tab.active { background: #171a1f; color: #e6e6e6; border-color: #2a2f37; margin-bottom: -1px; }
.tab:hover { color: #e6e6e6; }
/* --- chat playground -------------------------------------------------- */
.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 268px; gap: 16px; align-items: start; margin-top: 16px; }
@media (max-width: 860px) { .workspace { grid-template-columns: minmax(0, 1fr); } }
.col-main { min-width: 0; }
.msg { display: grid; grid-template-columns: 96px minmax(0, 1fr) auto; gap: 8px; align-items: start;
border: 1px solid #232830; border-radius: 8px; padding: 8px; margin-bottom: 8px; background: #14171c; }
.msg select { padding: 5px 6px; font-size: 12px; }
.msg textarea { min-height: 62px; font-size: 13px; }
.msg .rowbtns { display: flex; flex-direction: column; gap: 4px; }
.msg .rowbtns button { padding: 3px 7px; font-size: 11px; }
.msg.streaming { border-color: #2f6fed; }
.msg.streaming textarea { color: #cfd4da; }
.msg .badge { display: none; }
.msg .thumbs { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; }
.msg .thumbs:empty { display: none; }
.thumb { position: relative; }
.thumb img { display: block; width: 64px; height: 64px; object-fit: cover;
border-radius: 6px; border: 1px solid #2a2f37; }
.thumb button { position: absolute; top: -6px; right: -6px; padding: 0; width: 18px; height: 18px;
line-height: 1; border-radius: 999px; font-size: 11px; }
.msg.dragover { border-color: #5aa0ff; }
ul#models .mm { display: flex; align-items: center; gap: 4px; font-size: 11px; color: #8a8f98; }
#mmprojSelect { width: 148px; font-size: 11px; }
#mmprojSelect:disabled, .field select:disabled { opacity: .45; }
.msg.streaming .badge { display: inline; color: #7aa9ff; font-size: 11px; margin-left: 6px; }
.msg.streaming select { opacity: .6; }
.pick { width: auto; flex: 0 0 auto; padding: 7px 8px; }
/* --- parameters rail -------------------------------------------------- */
.params { border: 1px solid #2a2f37; border-radius: 10px; padding: 12px 14px; background: #171a1f;
position: sticky; top: 12px; }
.params h2 { margin: 0 0 6px; }
.params h2 + .field { margin-top: 6px; }
.params h2:not(:first-child) { margin-top: 14px; padding-top: 12px; border-top: 1px solid #232830; }
.field { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 7px 0;
color: #bfc5cd; font-size: 12px; }
.field input[type=number] { width: 82px; background: #0d0f12; color: #e6e6e6; border: 1px solid #2a2f37;
border-radius: 6px; padding: 5px 7px; font: inherit; font-size: 12px; }
.field select { width: 96px; background: #0d0f12; color: #e6e6e6; border: 1px solid #2a2f37;
border-radius: 6px; padding: 5px 6px; font: inherit; font-size: 12px; }
.field.wide { display: block; }
.field.wide textarea { margin-top: 5px; min-height: 58px; font-size: 12px; }
/* --- models tab ------------------------------------------------------- */
.add { border: 1px dashed #2a2f37; border-radius: 8px; padding: 10px 12px 4px; margin-bottom: 10px; }
.addrow { margin-bottom: 8px; }
.addrow.two { display: flex; gap: 8px; flex-wrap: wrap; }
.addrow.two > * { flex: 1 1 220px; min-width: 0; }
input[type=file] { color: #cfd4da; font: inherit; font-size: 13px; }
input[type=file]::file-selector-button { background: #2a2f37; color: #cfd4da; border: 0; border-radius: 6px;
padding: 6px 10px; margin-right: 10px; font: inherit; font-size: 13px; cursor: pointer; }
ul#models { list-style: none; margin: 12px 0 0; padding: 0; }
ul#models li.empty { color: #8a8f98; font-size: 13px; }
ul#models li.model { display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
padding: 9px 8px; border-top: 1px solid #232830; font-size: 13px; border-radius: 6px; }
ul#models li.model:first-child { border-top: 0; }
ul#models li.model.current { background: #1a2129; }
ul#models input.name { flex: 0 1 200px; background: transparent; border: 1px solid transparent;
border-radius: 6px; padding: 3px 6px; color: #e6e6e6; font: inherit; font-weight: 600; }
ul#models input.name:hover, ul#models input.name:focus { border-color: #2a2f37; background: #0d0f12; }
ul#models .meta { color: #8a8f98; flex: 1 1 190px; }
ul#models .sha { color: #9cc3ff; font-size: 12px; flex: 0 0 auto; }
ul#models .sha.unknown { color: #6d747e; }
ul#models .sha.ok::after { content: " ✓"; color: #7ee2a8; }
ul#models .sha.bad { color: #ff9db0; }
ul#models .sha.bad::after { content: " ≠ expected"; }
ul#models button { padding: 3px 9px; font-size: 12px; }
.cards { display: grid; gap: 10px; margin-top: 12px;
grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.card { display: flex; flex-direction: column; gap: 8px; padding: 12px;
border: 1px solid #2a2f37; border-radius: 8px; background: #12161b; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.card-head strong { font-size: 14px; }
.card-link { color: #9cc3ff; font-size: 12px; text-decoration: none; white-space: nowrap; }
.card-link:hover { text-decoration: underline; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 11px; color: #8a8f98; border: 1px solid #2a2f37;
border-radius: 999px; padding: 1px 8px; }
.chip.on { color: #7ee2a8; border-color: #2b4436; }
.card-summary { margin: 0; font-size: 13px; color: #cfd4da; }
.card .hint { margin: 0; }
.card .buttons { margin-top: auto; }
/* --- template tab ----------------------------------------------------- */
#templateSource { min-height: 170px; font-size: 12px; margin-top: 8px; }
#templatePreview { white-space: pre-wrap; word-break: break-word; background: #0d0f12;
border: 1px solid #2a2f37; border-radius: 6px; padding: 10px; font-size: 12px;
color: #cfd4da; margin: 10px 0 0; max-height: 280px; overflow: auto; }
#templatePreview:empty { display: none; }
/* --- tool calls ------------------------------------------------------- */
.msg .head { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.msg .toolid { font-size: 11px; padding: 3px 5px; }
.msg .toolcalls { grid-column: 1 / -1; margin-top: 4px; }
.tc-head { color: #7aa9ff; font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
margin-bottom: 6px; }
.tc { border: 1px solid #2a2f37; border-radius: 8px; padding: 8px 10px; background: #12151a;
margin-bottom: 6px; }
.tc-title { color: #9cc3ff; font-size: 13px; font-weight: 600; }
.tc-meta { color: #6d747e; font-size: 11px; }
.tc-json { font-size: 12px; margin: 6px 0; }
.tc-json ul { list-style: none; margin: 0; padding-left: 14px; }
.tc-json .k { color: #9aa1ab; }
.tc-json .s { color: #9ad7a0; }
.tc-json .n { color: #ffd28f; }
.tc-json .b { color: #ff9db0; }
.tc-raw { margin: 6px 0 0; padding: 8px 10px; background: #0d0f12; border: 1px solid #2a2f37;
border-radius: 6px; font-size: 12px; color: #cfd4da; white-space: pre-wrap; word-break: break-word; }
</style>
</head>
<body>
<h1>llm.js → latest llama.cpp <span class="pill">wasm32 · CPU · no WebGPU</span></h1>
<small>Same <code>LLM</code> API as llm.js, running current llama.cpp. Models live in a local library:
downloaded from a URL or read straight off your disk — never both.</small>
<div class="appbar">
<label for="modelSelect">model</label>
<select id="modelSelect" aria-label="model"></select>
<button id="loadSelected" disabled>Load</button>
<button id="reloadEngine" class="secondary" disabled
title="free the loaded model and the wasm backend, then load it again">Reload engine</button>
<button id="stop" class="danger" disabled title="stop generating, keeping what has arrived">Stop</button>
<div id="currentModel" class="muted"></div>
</div>
<div class="enginebar" role="group" aria-label="engine launch parameters">
<span class="enginebar-title">engine <span class="pill" title="fixed when the context is created">launch</span></span>
<label class="ef" title="context length in tokens; KV memory grows with this">ctx
<input type="number" id="ctxSize" value="1024" step="256" min="128" max="16384"
aria-label="context length"></label>
<label class="ef">KV K <select id="kvTypeK" aria-label="KV cache type for K">
<option value="f16" selected>f16</option>
<option value="q8_0">q8_0</option>
<option value="q4_0">q4_0</option>
</select></label>
<label class="ef">KV V <select id="kvTypeV" aria-label="KV cache type for V">
<option value="f16" selected>f16</option>
<option value="q8_0">q8_0</option>
<option value="q4_0">q4_0</option>
</select></label>
<label class="ef">flash <select id="flashAttn" aria-label="flash attention">
<option value="-1" selected>auto</option>
<option value="0">off</option>
<option value="1">on</option>
</select></label>
<label class="ef">threads <input type="number" id="threads" min="1" max="16" step="1" value="1"
aria-label="CPU threads"></label>
<label class="ef check"><input type="checkbox" id="kvUnified" checked> unified KV</label>
<label class="ef check"><input type="checkbox" id="useMmproj"> mmproj</label>
<label class="ef">projector <select id="mmprojSelect" aria-label="multimodal projector" disabled></select></label>
<p class="hint" id="threadsHint"></p>
<details>
<summary>how launch settings apply</summary>
<p class="hint">Applied when a model loads — press <b>Reload engine</b> after changing them.
One parallel sequence: extra slots would only duplicate a cache a single user cannot fill.
A quantized V cache needs flash attention; asking for one switches it on. KV memory grows
with context length.</p>
<p class="hint">Flag a GGUF as <b>mmproj</b> in the model library to choose it here. Then attach
images to a message (button or drag & drop); the image goes into the prompt as the
projector's media marker.</p>
</details>
</div>
<div id="bar"><div id="barFill"></div></div>
<div id="status">idle</div>
<nav class="tabs" role="tablist">
<button class="tab active" data-tab="chat" role="tab" aria-selected="true">Chat playground</button>
<button class="tab" data-tab="completion" role="tab" aria-selected="false">Raw completion</button>
<button class="tab" data-tab="template" role="tab" aria-selected="false">Chat template</button>
<button class="tab" data-tab="recommended" role="tab" aria-selected="false">Recommended</button>
<button class="tab" data-tab="models" role="tab" aria-selected="false">Models</button>
</nav>
<main>
<div class="workspace" id="workspace">
<div class="col-main">
<section class="panel" id="panel-chat">
<h2>chat completion</h2>
<p class="hint">This list <em>is</em> the conversation. Generate appends an assistant turn and streams
into it; Stop keeps whatever has already arrived and the turn stays editable.</p>
<div id="messages"></div>
<div class="buttons">
<select id="newRole" class="pick" aria-label="role for the new message">
<option value="user">user</option>
<option value="system">system</option>
<option value="assistant">assistant</option>
<option value="tool">tool</option>
</select>
<button id="addMessage" class="secondary">Add message</button>
<button id="resetConversation" class="secondary">Reset conversation</button>
<input type="file" id="imageInput" accept="image/*" multiple hidden>
</div>
<div class="buttons">
<button id="generateChat" disabled>Generate</button>
<button id="exportJson" class="secondary">Export JSON</button>
<button id="exportMd" class="secondary">Export Markdown</button>
</div>
</section>
<section class="panel" id="panel-completion" hidden>
<h2>raw completion</h2>
<p class="hint">No chat template: this text is the prompt, tokenized as typed. Completion models
usually expect a trailing space.</p>
<textarea id="prompt" class="prompt">Explain in two sentences why WebAssembly is useful for running an LLM in a browser.</textarea>
<div class="buttons">
<button id="run" disabled>Generate</button>
<button id="clear" class="secondary">Clear output</button>
</div>
<div id="out" class="out"></div>
</section>
<div id="stats"></div>
</div>
<aside class="params" id="paramsRail">
<h2>sampling</h2>
<label class="field">temperature <input type="number" id="temp" value="0.7" step="0.05" min="0" max="2"></label>
<label class="field">top_p <input type="number" id="topP" value="0.9" step="0.05" min="0" max="1"></label>
<label class="field">top_k <input type="number" id="topK" value="40" step="1" min="0"></label>
<label class="field">repetition penalty <input type="number" id="repeatPenalty" value="1.1" step="0.05" min="0" max="3"></label>
<label class="field">penalty window <input type="number" id="repeatLastN" value="32" step="1" min="0"></label>
<label class="field">seed <input type="number" id="seed" value="-1" step="1" title="-1 = random"></label>
<h2>limits</h2>
<label class="field">max new tokens <input type="number" id="maxTokens" value="96" step="1" min="1" max="2048"></label>
<label class="field wide">stop sequences
<textarea id="stopSequences" spellcheck="false" placeholder="one per line (\n and \t are expanded)"></textarea>
</label>
<h2>constrained output</h2>
<label class="field wide">constrain the reply with
<select id="constrain">
<option value="off">nothing (free text)</option>
<option value="tools" selected>tool calls (definitions below)</option>
<option value="json_schema">JSON schema</option>
<option value="grammar">GBNF grammar</option>
</select>
</label>
<label class="field wide" id="toolsWrap">tool definitions (OpenAI JSON)
<textarea id="tools" spellcheck="false" placeholder='[{"type":"function","function":{"name":"get_weather","parameters":{"type":"object","properties":{"city":{"type":"string"}}}}}]'></textarea>
</label>
<label class="field wide" id="schemaWrap" hidden>JSON schema
<textarea id="jsonSchema" spellcheck="false" placeholder='{"type":"object","properties":{"name":{"type":"string"}},"required":["name"]}'></textarea>
</label>
<label class="field wide" id="grammarWrap" hidden>GBNF grammar
<textarea id="grammar" spellcheck="false" placeholder='root ::= "yes" | "no"'></textarea>
</label>
<p class="hint" style="margin-top:8px">Tool definitions go to the chat template and the reply
is parsed by the model's own parser. A JSON schema or grammar instead constrains the reply
text itself, and replaces any grammar the template would have used. One constraint at a time.</p>
<h2>template</h2>
<label class="field wide">extra template arguments (JSON)
<textarea id="runTemplateKwargs" spellcheck="false"
placeholder='{"enable_thinking": true}'></textarea>
</label>
<label class="row"><input type="checkbox" id="enableThinking"> enable_thinking</label>
<p class="hint" style="margin-top:6px">The same object as <em>parameters JSON</em> on the Chat template
tab: edit it in either place — preview and generation both use it for the next turn.
<em>enable_thinking</em> only sets the template variable; whether reasoning is emitted and
separated into <code>reasoning_content</code> depends on the model's template and parser.</p>
</aside>
</div>
<section class="panel" id="panel-template" hidden>
<h2>chat template</h2>
<p class="hint" id="templateInfo"></p>
<label class="row"><input type="checkbox" id="useModelTemplate" checked>
use the template shipped in the GGUF (Jinja)</label>
<textarea id="templateSource" spellcheck="false" placeholder="Jinja chat template source"></textarea>
<label class="field wide" style="margin-top:12px">template parameters (JSON)
<textarea id="templateKwargs" spellcheck="false"
placeholder='{"enable_thinking": true}'></textarea>
</label>
<p class="hint" style="margin-top:8px">Passed to the Jinja template as extra variables, e.g.
<code>enable_thinking</code> for MiniCPM / Qwen-style templates.</p>
<div class="buttons">
<button id="previewTemplate" class="secondary">Preview with the playground messages</button>
<button id="resetTemplate" class="secondary">Reset to the model's template</button>
</div>
<pre id="templatePreview"></pre>
<p class="hint" style="margin-top:6px">Messages with images render one media marker per
image (<code><__media__></code>), in attachment order; that marker is what the projector
replaces with image tokens at generation time, so the preview shows the marker itself.</p>
</section>
<section class="panel" id="panel-recommended" hidden>
<h2>recommended models</h2>
<p class="hint">Driven by <code>web/models/recommended.json</code> — a plain static file, so this list can
change without rebuilding the page. Downloads take the same route as the Models tab (4 MiB chunks
into IndexedDB, resumable, with the publisher's sha256 checked on the way in).</p>
<div id="recList" class="cards"><p class="muted">loading…</p></div>
</section>
<section class="panel" id="panel-models" hidden>
<h2>model library</h2>
<div id="ingest" hidden>
<div class="ingest-head"><span id="ingestLabel">preparing…</span><span id="ingestPercent"></span></div>
<div id="ingestBar"><div id="ingestFill"></div></div>
</div>
<div class="add">
<h3>from a URL</h3>
<div class="addrow">
<input type="text" id="modelUrl"
value="https://huggingface.co/LiquidAI/LFM2.5-VL-450M-GGUF/resolve/main/LFM2.5-VL-450M-Q4_K_M.gguf">
</div>
<div class="addrow two">
<input type="text" id="urlName" placeholder="display name (optional — defaults to the file name)">
<input type="text" id="expectedSha" placeholder="expected sha256 (optional, to check against the publisher)">
</div>
<label class="row"><input type="checkbox" id="urlMmproj">
this file is a multimodal projector (mmproj)</label>
<div class="buttons">
<button id="addUrl">Download & load</button>
<button id="pause" class="secondary" disabled>Pause</button>
<button id="resume" class="secondary" disabled>Resume</button>
</div>
<p class="hint">Downloaded in 4 MiB chunks into IndexedDB: pausable, resumable, deletable.</p>
</div>
<div class="add">
<h3>from this computer</h3>
<div class="addrow two">
<input type="file" id="fileInput" accept=".gguf,application/octet-stream">
<input type="text" id="fileLabel" placeholder="display name (optional — defaults to the file name)">
</div>
<label class="row"><input type="checkbox" id="keepCopy">
keep a copy in browser storage</label>
<label class="row"><input type="checkbox" id="fileMmproj">
this file is a multimodal projector (mmproj)</label>
<p class="hint">Left unchecked the file is read in 4 MiB slices at load time and never duplicated —
you only re-pick it after a reload. Checked, a copy is written to IndexedDB (one copy in total)
so the model survives a reload on its own.</p>
<div class="buttons">
<button id="addFile" disabled>Add & load</button>
</div>
</div>
<div class="muted" id="quota" style="font-size:12px;margin-top:6px"></div>
<ul id="models"><li class="empty">no models yet — add one above</li></ul>
<details>
<summary>llama.cpp log</summary>
<div id="log"></div>
</details>
</section>
</main>
<script type="module">
import { LLM, MODELS } from "./llm.js";
import { action } from "./actions.js";
import { listModels, deleteModel, updateModel, storageEstimate } from "./storage.js";
const DEFAULT_CTX = 1024;
const $ = (id) => document.getElementById(id);
const fmt = (bytes) => {
if (!bytes && bytes !== 0) return "?";
const mib = bytes / 1048576;
return mib >= 1024 ? (mib / 1024).toFixed(2) + " GiB" : mib.toFixed(1) + " MiB";
};
const pct = (loaded, total) => (total ? Math.min(100, (loaded / total) * 100) : 0);
const statusText = (t) => { $("status").textContent = t; };
// llama.cpp log levels: 1 debug, 2 info, 3 warn, 4 error, 5 continuation.
// Only warn/error are coloured; info is llama.cpp's own progress chatter
// (every image batch logs one line) and must not read as a failure.
const log = (t, level = 0) => {
const el = $("log");
const text = t.endsWith("\n") ? t : t + "\n";
if (level >= 3) {
const line = document.createElement("span");
line.className = "logline " + (level >= 4 ? "err" : "warn");
line.textContent = text;
el.appendChild(line);
} else {
el.appendChild(document.createTextNode(text));
}
el.scrollTop = el.scrollHeight;
};
const setBar = (loaded, total) => { $("barFill").style.width = pct(loaded, total).toFixed(1) + "%"; };
const resetBar = () => { $("barFill").style.width = "0%"; };
// Model ingest (download / copy into IndexedDB) has its own bar in the Models
// tab. The top bar tracks engine startup only; one bar for both made a finished
// download look like a starting engine and vice versa.
const showIngest = (label, loaded = 0, total = 0) => {
const box = $("ingest");
box.hidden = false;
box.classList.remove("error");
$("ingestLabel").textContent = label;
$("ingestPercent").textContent = total ? pct(loaded, total).toFixed(1) + "%" : "";
$("ingestFill").style.width = pct(loaded, total).toFixed(1) + "%";
};
const hideIngest = () => {
$("ingest").hidden = true;
$("ingest").classList.remove("error");
$("ingestFill").style.width = "0%";
};
const labelIngest = (label) => { if (!$("ingest").hidden) $("ingestLabel").textContent = label; };
const failIngest = (why) => {
$("ingest").hidden = false;
$("ingest").classList.add("error");
$("ingestLabel").textContent = "error: " + why;
$("ingestPercent").textContent = "";
};
let app = null;
let models = [];
let loadedId = null; // model currently in the wasm instance
let ingestingProjector = null; // name while an mmproj URL is being downloaded
let currentId = null; // model the user last asked to load
let pendingFile = null; // file picked for the "add" form
let reattachFor = null; // model id waiting for its file to be re-picked
const attached = new Map(); // model id -> File, this session only
let uiState = "idle";
let loadedTemplate = ""; // the Jinja source shipped in the loaded GGUF
let chatRow = null; // the assistant turn currently being streamed into
const BUSY = ["starting", "downloading", "copying", "hashing", "loading", "generating"];
// the marker mtmd replaces with the image tokens (mtmd_default_marker())
const MM_MARKER = "<__media__>";
let imageTargetRow = null; // row waiting for the image picker
let embedJob = null; // { id, text } while a parent frame drives a run
// Messages to an embedding page. A no-op when this page is not in a frame (or
// when the run was started by the page itself).
const postEmbed = (type, data) => {
if (embedJob) parent.postMessage({ type: `llmjs:${type}`, id: embedJob.id, ...data }, "*");
};
// --- tabs -----------------------------------------------------------------
function showTab(name) {
for (const btn of document.querySelectorAll(".tab")) {
const on = btn.dataset.tab === name;
btn.classList.toggle("active", on);
btn.setAttribute("aria-selected", on ? "true" : "false");
}
const running = name === "chat" || name === "completion";
$("workspace").hidden = !running;
$("panel-chat").hidden = name !== "chat";
$("panel-completion").hidden = name !== "completion";
$("panel-template").hidden = name !== "template";
$("panel-recommended").hidden = name !== "recommended";
$("panel-models").hidden = name !== "models";
if (name === "recommended") renderRecommended();
}
for (const btn of document.querySelectorAll(".tab")) {
btn.onclick = () => showTab(btn.dataset.tab);
}
let threadsUsable = true; // false when the page is not cross-origin isolated
function setState(state) {
uiState = state;
const busy = BUSY.includes(state);
$("addUrl").disabled = busy;
$("addFile").disabled = busy || !pendingFile;
$("pause").disabled = state !== "downloading";
$("resume").disabled = state !== "paused";
$("generateChat").disabled = busy || !loadedId;
$("run").disabled = busy || !loadedId;
$("stop").disabled = state !== "generating";
$("modelUrl").disabled = busy;
$("loadSelected").disabled = busy || !models.length;
$("reloadEngine").disabled = busy || !loadedId;
// on a page without COOP/COEP the field stays locked: the single-thread
// module is the only thing that can load there, so editing it would lie
$("threads").disabled = busy || !threadsUsable;
$("useMmproj").disabled = busy;
$("mmprojSelect").disabled = busy || !$("useMmproj").checked ||
!models.some((m) => m.multimodal);
}
// --- parameters -----------------------------------------------------------
const num = (id, fallback) => {
const v = Number($(id).value);
return Number.isFinite(v) ? v : fallback;
};
// engine launch parameters: fixed when llama_context is created, so a change
// takes effect on the next load (or Reload engine), not mid-conversation
function engineParams() {
return {
context_size: Math.max(128, num("ctxSize", DEFAULT_CTX)),
kv: {
type_k: $("kvTypeK").value,
type_v: $("kvTypeV").value,
flash_attn: num("flashAttn", -1),
kv_unified: $("kvUnified").checked,
n_parallel: 1,
},
threads: Math.max(1, Math.min(64, num("threads", 1))),
mmproj_id: $("useMmproj").checked ? ($("mmprojSelect").value || null) : null,
};
}
// one per line; \n, \t and \r let a stop sequence span lines
function stopList() {
return $("stopSequences").value.split("\n")
.filter((line) => line.length > 0)
.map((line) => line.replace(/\\n/g, "\n").replace(/\\t/g, "\t").replace(/\\r/g, "\r"));
}
function templateOverride() {
return $("useModelTemplate").checked ? "" : $("templateSource").value;
}
function runParams() {
return {
max_token_len: Math.max(1, num("maxTokens", 96)),
temp: num("temp", 0.7),
top_p: num("topP", 0.9),
top_k: num("topK", 40),
repeat_penalty: num("repeatPenalty", 1.1),
repeat_last_n: num("repeatLastN", 32),
seed: num("seed", -1),
stop: stopList(),
chat_template_source: templateOverride(),
tools: $("tools").value.trim(),
// the tool path above is untouched: these stay empty unless the picker
// selects them, and a caller grammar wins over the template's own
json_schema: $("constrain").value === "json_schema" ? $("jsonSchema").value.trim() : "",
grammar: $("constrain").value === "grammar" ? $("grammar").value.trim() : "",
template_kwargs: $("templateKwargs").value.trim() || "{}",
};
}
// --- worker plumbing ------------------------------------------------------
function ensureApp() {
if (app) return app;
app = new LLM(
MODELS.GGUF_CPU,
{}, // no model yet: loads are driven by id
(info) => {
loadedId = info.model.id;
currentId = info.model.id;
const m = info.model;
loadedTemplate = info.chat_template || "";
$("currentModel").textContent = `${m.name}` + (m.sha256 ? ` · sha256 ${m.sha256.slice(0, 12)}…` : "");
$("templateSource").value = m.templateOverride || loadedTemplate;
$("useModelTemplate").checked = !m.templateOverride;
syncTemplateUI();
const cfg = info.ctx_config || {};
if (cfg.n_ctx) $("ctxSize").value = cfg.n_ctx;
if (cfg.flash_attn !== undefined) $("flashAttn").value = String(cfg.flash_attn);
const mm = info.mmproj;
statusText(`model ready · ${m.name} · n_ctx=${info.n_ctx} · ` +
`KV ${cfg.type_k || "f16"}/${cfg.type_v || "f16"}` +
(cfg.kv_unified ? " unified" : "") +
(cfg.flash_attn === 1 ? " · flash-attn" : "") +
` · ${cfg.n_seq_max || 1} seq · ${info.threads || 1} thread${(info.threads || 1) === 1 ? "" : "s"}` +
(mm && mm.loaded ? ` · mmproj ${info.mmproj_name}${mm.vision ? " (vision)" : ""}` : "") +
` · ` + (loadedTemplate ? "chat template from the GGUF" : "no chat template"));
if (window.parent !== window) {
parent.postMessage({ type: "llmjs:ready", model: m.name,
n_ctx: info.n_ctx, threads: info.threads || 1 }, "*");
}
// the bar belongs to the startup, not to the loaded state
resetBar();
hideIngest();
setState("ready");
refreshModels();
},
// tokens: into the streaming assistant turn, or into the completion box
(text) => {
// a parent frame's run streams to the parent, not into this page's DOM
if (embedJob) { embedJob.text += text; postEmbed("token", { text }); return; }
if (chatRow) {
const ta = chatRow.querySelector(".content");
ta.value += text;
ta.scrollTop = ta.scrollHeight;
} else {
$("out").textContent += text;
}
},
(stats) => {
if (embedJob) {
const job = embedJob;
embedJob = null;
parent.postMessage({ type: "llmjs:done", id: job.id, text: job.text,
stats: { tokens: stats.tokens, ms: stats.ms,
tokens_per_second: stats.tokens_per_second,
prompt_tokens: stats.run_stats && stats.run_stats.prompt_tokens,
stopped: !!stats.interrupted } }, "*");
setState("ready");
return;
}
if (stats.mode === "chat" && chatRow) {
// the final text is authoritative: it has stop sequences removed and
// any held-back tail flushed
const ta = chatRow.querySelector(".content");
ta.value = stats.output ?? ta.value;
ta.readOnly = false;
chatRow.classList.remove("streaming");
// tool calls are structured data: the parser built for this prompt
// already split them out, so show them as JSON, not as text
const calls = stats.parsed && stats.parsed.tool_calls;
if (Array.isArray(calls) && calls.length) {
// the call markup itself is not transcript text: what the model said
// before calling is, and the call is shown as JSON instead
const said = stats.parsed.content;
ta.value = typeof said === "string" ? said.trimEnd() : ta.value;
chatRow.toolCalls = openAiToolCalls(calls);
renderToolCalls(chatRow, calls);
}
chatRow = null;
} else if (stats.mode !== "chat") {
$("out").textContent = stats.output ?? $("out").textContent;
}
const bits = [`${stats.tokens} tokens in ${(stats.ms / 1000).toFixed(2)}s ` +
`(${stats.tokens_per_second.toFixed(2)} tok/s)`];
if (stats.run_stats) {
const r = stats.run_stats;
bits.push(`prompt ${r.prompt_tokens} tok` +
(r.reused_tokens ? ` (${r.reused_tokens} reused from KV)` : "") +
` in ${Math.round(r.prompt_ms)} ms`);
}
if (stats.template_strategy) bits.push(`template: ${stats.template_strategy}`);
if (stats.interrupted) bits.push("stopped");
$("stats").textContent = bits.join(" · ");
setState("ready");
},
(err) => {
if (embedJob) {
const job = embedJob;
embedJob = null;
parent.postMessage({ type: "llmjs:error", id: job.id, error: String(err) }, "*");
setState(loadedId ? "ready" : "idle");
return;
}
if (chatRow) {
chatRow.classList.remove("streaming");
chatRow.querySelector(".content").readOnly = false;
chatRow = null;
}
// an ingest failure belongs to the library surface, not the engine one
if (uiState === "downloading" || uiState === "copying" || ingestingProjector) {
failIngest(String(err));
ingestingProjector = null;
statusText("engine idle — the model library reported an error");
} else {
statusText("error: " + err);
}
log("ERROR: " + err);
setState(loadedId ? "ready" : "idle");
},
(p) => {
const done = p.total > 0 && p.loaded >= p.total;
if (p.phase === "download") {
// library work: the engine bar stays at zero until the bytes are here
setState("downloading");
resetBar();
showIngest(p.complete || done ? "downloaded — starting the engine…"
: `downloading ${fmt(p.loaded)} / ${fmt(p.total)}`, p.loaded, p.total);
} else if (p.phase === "copy") {
setState("copying");
resetBar();
if (done) hideIngest();
else showIngest(`copying into browser storage ${fmt(p.loaded)} / ${fmt(p.total)}`,
p.loaded, p.total);
} else if (p.phase === "hash") {
setState("hashing");
if (ingestingProjector) {
// no engine is starting: the projector is library content
resetBar();
showIngest(`verifying the projector (sha256 ${pct(p.loaded, p.total).toFixed(0)}%)`,
p.loaded, p.total);
statusText("engine idle — verifying the projector");
} else {
// the bytes are in the library; this is startup work
hideIngest();
statusText(`engine starting · verifying model bytes (sha256 ${pct(p.loaded, p.total).toFixed(0)}%)`);
setBar(p.loaded, p.total);
}
} else if (p.phase === "load") {
hideIngest();
setState("loading");
statusText(`engine starting · loading into wasm ${fmt(p.loaded)} / ${fmt(p.total)}`);
setBar(p.loaded, p.total);
}
},
(line, level) => log(line.trimEnd(), level ?? 0),
);
app.on_event = (msg) => {
switch (msg.event) {
case action.MODEL_ADDED:
if (pendingFile && msg.model.source === "file") attached.set(msg.model.id, pendingFile);
pendingFile = null;
$("fileInput").value = "";
$("fileLabel").value = "";
$("urlMmproj").checked = false;
$("fileMmproj").checked = false;
syncIngestButtons();
// adding a projector does not load anything, so nothing reports INITIALIZED
setState(loadedId ? "ready" : "idle");
refreshModels();
break;
case action.MODEL_UPDATED:
if (ingestingProjector) {
const name = ingestingProjector;
ingestingProjector = null;
hideIngest();
resetBar();
statusText(`${name} added to the model library — pick it in the engine row`);
setState(loadedId ? "ready" : "idle");
}
refreshModels();
break;
case action.PAUSED:
labelIngest("paused — press Resume to continue");
statusText("engine idle — the download is paused");
setState("paused");
refreshModels();
break;
case action.TEMPLATE_PREVIEW:
$("templatePreview").textContent = msg.text;
break;
case action.DELETED:
if (loadedId === msg.id) {
loadedId = null;
loadedTemplate = "";
$("currentModel").textContent = "";
$("templateSource").value = "";
syncTemplateUI();
}
if (currentId === msg.id) currentId = null;
attached.delete(msg.id);
statusText("deleted from the library");
refreshModels();
setState(loadedId ? "ready" : "idle");
break;
}
};
app.load_worker({ context_size: DEFAULT_CTX, autoload: false });
return app;
}
// --- conversation ---------------------------------------------------------
const ROLES = ["system", "user", "assistant", "tool"];
function addMessageRow(role = "user", content = "", { streaming = false } = {}) {
const row = document.createElement("div");
row.className = "msg" + (streaming ? " streaming" : "");
row.toolCalls = null;
row.images = []; // { name, dataUrl } attached to this message
const sel = document.createElement("select");
sel.className = "role";
sel.setAttribute("aria-label", "role");
for (const r of ROLES) sel.appendChild(new Option(r, r));
sel.value = role;
// a tool result names the call it answers; every other role hides this
const toolid = document.createElement("input");
toolid.type = "text";
toolid.className = "toolid";
toolid.placeholder = "tool_call_id";
toolid.title = "which tool call this result answers";
toolid.hidden = role !== "tool";
sel.onchange = () => { toolid.hidden = sel.value !== "tool"; };
const ta = document.createElement("textarea");
ta.className = "content";
ta.spellcheck = false;
ta.value = content;
ta.readOnly = streaming;
const tools = document.createElement("div");
tools.className = "rowbtns";
for (const [act, label, title] of [["up", "↑", "move up"], ["down", "↓", "move down"],
["image", "🖼", "attach an image"], ["del", "✕", "remove"]]) {
const b = document.createElement("button");
b.className = act === "del" ? "danger" : "secondary";
b.dataset.act = act;
b.textContent = label;
b.title = title;
tools.appendChild(b);
}
const badge = document.createElement("span");
badge.className = "badge";
badge.textContent = "streaming…";
const head = document.createElement("div");
head.className = "head";
head.append(sel, toolid, badge);
const thumbs = document.createElement("div");
thumbs.className = "thumbs";
row.append(head, ta, tools, thumbs);
row.addEventListener("dragover", (e) => { e.preventDefault(); row.classList.add("dragover"); });
row.addEventListener("dragleave", () => row.classList.remove("dragover"));
row.addEventListener("drop", (e) => {
e.preventDefault();
row.classList.remove("dragover");
for (const f of e.dataTransfer.files) {
if (f.type.startsWith("image/")) addImageToRow(row, f);
}
});
$("messages").appendChild(row);
row.scrollIntoView({ block: "nearest" });
return row;
}
$("messages").addEventListener("click", (e) => {
const btn = e.target.closest("button[data-act]");
if (!btn) return;
const row = btn.closest(".msg");
const act = btn.dataset.act;
if (act === "image") { imageTargetRow = row; $("imageInput").click(); return; }
if (act === "del") row.remove();
if (act === "up" && row.previousElementSibling) $("messages").insertBefore(row, row.previousElementSibling);
if (act === "down" && row.nextElementSibling) $("messages").insertBefore(row.nextElementSibling, row);
});
// One media marker per attached image, in order, then the text: that is what
// the template renders and what mtmd replaces with image tokens.
function readMessages({ markers = false } = {}) {
return [...$("messages").querySelectorAll(".msg")]
.map((row) => {
const role = row.querySelector(".role").value;
let content = row.querySelector(".content").value;
if (markers && row.images.length) {
content = row.images.map(() => MM_MARKER).join("") + content;
}
if (role === "tool") {
const id = (row.querySelector(".toolid")?.value || "").trim();
return id ? { role, content, tool_call_id: id } : { role, content };
}
if (row.toolCalls && row.toolCalls.length) {
return { role, content, tool_calls: row.toolCalls };
}
return { role, content };
})
.filter((m) => m.content.length > 0 || (m.tool_calls && m.tool_calls.length));
}
// every image in the transcript, in the order the markers were rendered
function readImages() {
return [...$("messages").querySelectorAll(".msg")]
.flatMap((row) => row.images.map((img) => img.dataUrl));
}
function addImageToRow(row, file) {
const reader = new FileReader();
reader.onload = () => {
row.images.push({ name: file.name, dataUrl: String(reader.result) });
renderThumbs(row);
statusText(`${file.name} attached to the ${row.querySelector(".role").value} message`);
};
reader.onerror = () => statusText(`could not read ${file.name}`);
reader.readAsDataURL(file);
}
// mini-avatar thumbnails, each with its own remove button
function renderThumbs(row) {
const box = row.querySelector(".thumbs");
box.innerHTML = "";
row.images.forEach((img, i) => {
const wrap = document.createElement("div");
wrap.className = "thumb";
const el = document.createElement("img");
el.src = img.dataUrl;
el.alt = img.name;
el.title = img.name;
const del = document.createElement("button");
del.className = "danger";
del.textContent = "×";
del.title = "remove this image";
del.onclick = () => { row.images.splice(i, 1); renderThumbs(row); };
wrap.append(el, del);
box.appendChild(wrap);
});
}
$("imageInput").onchange = () => {
const files = [...$("imageInput").files];
const row = imageTargetRow;
imageTargetRow = null;
$("imageInput").value = "";
if (!row) return;
for (const f of files) {
if (f.type.startsWith("image/")) addImageToRow(row, f);
}
};
$("addMessage").onclick = () => addMessageRow($("newRole").value, "");
$("resetConversation").onclick = () => {
$("messages").innerHTML = "";
addMessageRow("user", "");
$("stats").textContent = "";
};
addMessageRow("user", "Explain in two sentences why WebAssembly is useful for running an LLM in a browser.");
// --- run ------------------------------------------------------------------
$("generateChat").onclick = () => {
if (!app) return;
const messages = readMessages();
if (!messages.length) { statusText("add a message first"); return; }
// the assistant turn is part of the transcript before the first token
chatRow = addMessageRow("assistant", "", { streaming: true });
$("stats").textContent = "generating…";
setState("generating");
app.run({ mode: "chat", messages: readMessages({ markers: true }),
images: readImages(), ...runParams() });
};
$("run").onclick = () => {
if (!app) return;
$("out").textContent = "";
$("stats").textContent = "generating…";
setState("generating");
app.run({ mode: "completion", prompt: $("prompt").value, ...runParams() });
};
$("stop").onclick = () => {
if (!app) return;
statusText("stopping — what arrived stays");
app.stop();
};
$("clear").onclick = () => { $("out").textContent = ""; $("stats").textContent = ""; };
// --- model library --------------------------------------------------------
const button = (label, cls, onClick) => {
const b = document.createElement("button");
b.textContent = label;
b.className = cls;
b.onclick = onClick;
return b;
};
function renderRow(m) {
const li = document.createElement("li");
li.className = "model" + (m.id === loadedId ? " current" : "");
li.dataset.id = m.id;
const name = document.createElement("input");
name.className = "name";
name.value = m.name;
name.title = "display name — edit, then press Enter";
name.onchange = async () => {
const value = name.value.trim();
if (!value || value === m.name) { name.value = m.name; return; }
await updateModel(m.id, { name: value });
log(`renamed ${m.name} → ${value}`);
refreshModels();
};
const meta = document.createElement("span");
meta.className = "meta";
const bits = [m.source === "url" ? "url" : "local file", fmt(m.total || m.received || 0)];
if (m.source === "url" && !m.complete) bits.push("partial");
if (m.source === "file") {
bits.push(m.copied ? "copy in browser" : attached.has(m.id) ? "file attached" : "needs file");
}
meta.textContent = bits.join(" · ");
meta.title = m.url || m.fileName || "";
const sha = document.createElement("span");
sha.className = "sha";
if (m.sha256) {
sha.textContent = `sha256 ${m.sha256.slice(0, 16)}…`;
sha.title = m.sha256;
if (m.expectedSha256) sha.classList.add(m.expectedSha256 === m.sha256 ? "ok" : "bad");
} else {
sha.textContent = "sha256 not computed";
sha.classList.add("unknown");
}
const mm = document.createElement("label");
mm.className = "mm";
const mmBox = document.createElement("input");
mmBox.type = "checkbox";
mmBox.checked = !!m.multimodal;
mmBox.title = "this GGUF is a multimodal projector (mmproj), not a text model";
mmBox.onchange = async () => {
await updateModel(m.id, { multimodal: mmBox.checked });
statusText(`${m.name} ${mmBox.checked ? "flagged as" : "no longer"} a multimodal projector`);
refreshModels();
};
mm.append(mmBox, document.createTextNode("mmproj"));
li.append(name, meta, mm, sha);
li.appendChild(button("load", "", () => startLoad(m)));
if (m.sha256) li.appendChild(button("copy hash", "secondary", () => copyHash(m)));
li.appendChild(button("delete", "danger", () => removeModel(m)));
return li;
}
async function refreshModels() {
models = await listModels().catch(() => []);
const ul = $("models");
ul.innerHTML = "";
if (!models.length) {
ul.innerHTML = '<li class="empty">no models yet — add one above</li>';
} else {
for (const m of models) ul.appendChild(renderRow(m));
}
// mmproj files are not text models: they belong to the projector picker
const textModels = models.filter((m) => !m.multimodal);
const select = $("modelSelect");
const wanted = currentId || loadedId || "";
// keep the Recommended cards honest about what is already downloaded
if (recommended && !$("panel-recommended").hidden) renderRecommended();
select.innerHTML = "";
if (!textModels.length) select.appendChild(new Option("no models yet", ""));
for (const m of textModels) {
const needsFile = m.source === "file" && !m.copied && !attached.has(m.id);
const label = `${m.name} · ${m.source === "url" ? "url" : "file"} · ` +
`${fmt(m.total || m.received || 0)}` +
(m.id === loadedId ? " · loaded" : needsFile ? " · needs file" : "");
select.appendChild(new Option(label, m.id));
}
select.value = wanted;
const mpSelect = $("mmprojSelect");
const previousMp = mpSelect.value;
mpSelect.innerHTML = "";
const projectors = models.filter((m) => m.multimodal);
if (!projectors.length) mpSelect.appendChild(new Option("no mmproj in the library", ""));
for (const m of projectors) mpSelect.appendChild(new Option(m.name, m.id));
if (projectors.some((m) => m.id === previousMp)) mpSelect.value = previousMp;
mpSelect.disabled = !$("useMmproj").checked || !projectors.length;
const est = await storageEstimate();
if (est && est.quota) {
$("quota").textContent = `browser storage: ${fmt(est.usage || 0)} used of ${fmt(est.quota)}` +
(models.length ? ` · ${fmt(models.reduce((n, m) => n + (m.source === "url" || m.copied ? m.received || 0 : 0), 0))} in this library` : "");
}
}
async function copyHash(m) {
try {
await navigator.clipboard.writeText(m.sha256);
statusText(`copied sha256 of ${m.name} to the clipboard`);
} catch (_) {
log(`sha256(${m.name}) = ${m.sha256}`);
statusText("clipboard unavailable — the hash is in the log");
}
}
async function removeModel(m) {
if (app) app.post({ event: action.DELETE_MODEL, id: m.id });
else { await deleteModel(m.id); refreshModels(); }
}
function selectedModel() {
const id = $("modelSelect").value;
return models.find((m) => m.id === id) || null;
}
// --- actions --------------------------------------------------------------
const needsFile = (m) => m.source === "file" && !m.copied && !attached.has(m.id);
function startLoad(m) {
if (m.multimodal) {
statusText(`${m.name} is an mmproj — tick mmproj in the engine row and pick it there`);
return;
}
// a local file that was never copied needs its File again after a reload
if (needsFile(m)) {
reattachFor = m.id;
statusText(`choose ${m.fileName} again — nothing is re-downloaded, the file stays on your disk`);
$("fileInput").click();
return;
}
const mp = $("useMmproj").checked
? models.find((x) => x.id === $("mmprojSelect").value) || null
: null;
if (mp && needsFile(mp)) {
reattachFor = mp.id;
statusText(`choose ${mp.fileName} (the mmproj) again — nothing is re-downloaded`);
$("fileInput").click();
return;
}
ensureApp();
currentId = m.id;
$("out").textContent = "";
$("stats").textContent = "";
resetBar();
// a URL model that never finished is an ingest job first; its progress is
// reported in the model library, and the engine bar starts at zero
if (m.source === "url" && !m.complete) {
showTab("models");
showIngest("preparing download…");
statusText("engine idle — download progress is in the model library");
} else {
hideIngest();
statusText("starting…");
}
setState("starting");
app.post({
event: action.LOAD,
id: m.id,
file: attached.get(m.id) || null,
mmproj_file: mp ? attached.get(mp.id) || null : null,
...engineParams(),
});
}
$("loadSelected").onclick = () => {
const m = selectedModel();
if (m) startLoad(m);
};
$("reloadEngine").onclick = () => {
if (!app || !currentId) return;
$("out").textContent = "";
$("stats").textContent = "";
hideIngest();
resetBar();
statusText("freeing the model and reloading the engine…");
setState("starting");
const mpId = engineParams().mmproj_id;
app.reload(currentId, {
...engineParams(),
mmproj_file: mpId ? attached.get(mpId) || null : null,
});
};
$("fileInput").onchange = () => {
const file = $("fileInput").files[0];
if (!file) return;
if (reattachFor) {
const id = reattachFor;
reattachFor = null;
const m = models.find((x) => x.id === id);
if (m && file.size !== m.total) log(`note: ${file.name} is ${fmt(file.size)}, the record says ${fmt(m.total)}`);
attached.set(id, file);
log(`re-attached ${file.name}`);
if (m) startLoad(m);
return;
}
pendingFile = file;
if (!$("fileLabel").value) $("fileLabel").placeholder = file.name;
statusText(`${file.name} · ${fmt(file.size)} — press "Add & load"`);
setState(uiState);
};
$("addFile").onclick = () => {
const file = pendingFile || $("fileInput").files[0];
if (!file) return;
ensureApp();
$("out").textContent = "";
$("stats").textContent = "";
resetBar();
hideIngest();
const copy = $("keepCopy").checked;
const projector = $("fileMmproj").checked;
if (projector) {
statusText(`adding ${file.name} to the model library…`);
if (copy) showIngest("copying the projector into the library…");
} else if (copy) {
showIngest("copying the file into the library…");
statusText("engine idle — copy progress is in the model library");
} else {
statusText("starting…");
}
setState("starting");
app.post({
event: action.ADD_FILE,
file,
name: $("fileLabel").value.trim(),
keepCopy: $("keepCopy").checked,
mmproj: $("fileMmproj").checked,
expectedSha256: $("expectedSha").value.trim().toLowerCase(),
...engineParams(),
});
};
// One place for "download this URL into the library and load it", so the
// Models tab and the Recommended tab cannot drift apart.
function startUrlDownload({ url, name = "", expectedSha256 = "", mmproj = false }) {
ensureApp();
$("out").textContent = "";
$("stats").textContent = "";
resetBar();
hideIngest();
// progress lives in the library, so that is where the download happens
showTab("models");
// a projector is downloaded into the library and nothing is started: it
// becomes a launch parameter of the next model load
if (mmproj) ingestingProjector = name || url.split("/").pop() || "projector";
showIngest("preparing download…");
statusText("engine idle — download progress is in the model library");
setState("starting");
app.post({
event: action.ADD_URL,
url,
name,
mmproj,
expectedSha256: (expectedSha256 || "").trim().toLowerCase(),
...engineParams(),
});
}
$("addUrl").onclick = () => {
const url = $("modelUrl").value.trim();
if (!url) return;
startUrlDownload({
url,
name: $("urlName").value.trim(),
expectedSha256: $("expectedSha").value,
mmproj: $("urlMmproj").checked,
});
};
// --- recommended models (static JSON) -------------------------------------
const RECOMMENDED_JSON = "./recommended-models.json";
let recommended = null; // { models: [...] } once fetched
let recommendedError = "";
async function loadRecommended() {
if (recommended || recommendedError) return;
try {
const res = await fetch(RECOMMENDED_JSON, { cache: "no-cache" });
if (!res.ok) throw new Error(`${res.status} ${res.statusText}`);
const data = await res.json();
recommended = { models: Array.isArray(data.models) ? data.models : [] };
} catch (err) {
recommendedError = String(err);
log(`recommended models: ${err}`);
}
}
// A card is "already yours" if the URL matches, or the bytes do: the sha256
// is what survives a renamed file or a re-download from a mirror.
const libraryMatch = (entry) => models.find((m) =>
(entry.url && m.url && m.url === entry.url) ||
(entry.sha256 && m.sha256 && m.sha256 === entry.sha256));
const chip = (text, cls) => {
const el = document.createElement("span");
el.className = "chip" + (cls ? " " + cls : "");
el.textContent = text;
return el;
};
function renderRecommended() {
const box = $("recList");
if (!recommended && !recommendedError) {
box.innerHTML = '<p class="muted">loading…</p>';
loadRecommended().then(renderRecommended);
return;
}
box.innerHTML = "";
if (recommendedError) {
const p = document.createElement("p");
p.className = "muted";
p.textContent = `could not load ${RECOMMENDED_JSON}: ${recommendedError}`;
box.appendChild(p);
return;
}
if (!recommended.models.length) {
box.innerHTML = '<p class="muted">the list is empty — add entries to recommended.json</p>';
return;
}
for (const entry of recommended.models) {
const card = document.createElement("div");
card.className = "card";
const head = document.createElement("div");
head.className = "card-head";
const title = document.createElement("strong");
title.textContent = entry.name || entry.url;
const link = document.createElement("a");
link.className = "card-link";
link.href = entry.page || entry.url;
link.target = "_blank";
link.rel = "noopener noreferrer";
link.textContent = "Hugging Face ↗";
head.append(title, link);
const chips = document.createElement("div");
chips.className = "chips";
for (const bit of [entry.publisher, entry.params, entry.quant,
entry.size_bytes ? fmt(entry.size_bytes) : ""]) {
if (bit) chips.appendChild(chip(bit));
}
if (entry.multimodal) chips.appendChild(chip("vision", "on"));
for (const tag of entry.tags || []) {
if (entry.multimodal && tag === "vision") continue;
chips.appendChild(chip(tag));
}
const summary = document.createElement("p");
summary.className = "card-summary";
summary.textContent = entry.summary || "";
card.append(head, chips, summary);
if (entry.note) {
const note = document.createElement("p");
note.className = "hint";
note.textContent = entry.note;
card.appendChild(note);
}
const have = libraryMatch(entry);
const go = document.createElement("button");
if (have) {
go.className = "secondary";
go.textContent = "In library — load";
go.title = have.name;
go.onclick = () => startLoad(have);
} else {
go.textContent = "Download";
go.onclick = () => {
if (BUSY.includes(uiState)) return;
startUrlDownload({
url: entry.url,
name: entry.name || "",
expectedSha256: entry.sha256 || "",
});
};
}
const actions = document.createElement("div");
actions.className = "buttons";
actions.appendChild(go);
card.appendChild(actions);
box.appendChild(card);
}
}
$("pause").onclick = () => {
if (app) { app.pause(); labelIngest("pausing…"); statusText("engine idle — pausing the download…"); }
};
$("resume").onclick = () => {
if (!app) return;
labelIngest("resuming…");
statusText("engine idle — resuming the download…");
setState("downloading");
app.resume();
};
// --- chat template tab ----------------------------------------------------
function syncTemplateUI() {
const useModel = $("useModelTemplate").checked;
$("templateSource").readOnly = useModel;
$("templateSource").style.opacity = useModel ? 0.7 : 1;
$("templateInfo").textContent = useModel
? (loadedTemplate
? "chat completion renders the template shipped in this GGUF, through the Jinja engine compiled into the wasm build"
: "this model carries no chat template — chat completion falls back to a preset, then to plain text")
: "chat completion renders your override; the model's own template is ignored";
$("resetTemplate").disabled = !loadedTemplate;
}
$("useModelTemplate").onchange = () => {
if ($("useModelTemplate").checked && loadedTemplate) $("templateSource").value = loadedTemplate;
syncTemplateUI();
};
$("resetTemplate").onclick = () => {
$("templateSource").value = loadedTemplate;
$("useModelTemplate").checked = true;
syncTemplateUI();
};
// one constraint at a time: the picker reveals only the box it applies to
function syncConstrain() {
const mode = $("constrain").value;
$("toolsWrap").hidden = mode !== "tools";
$("schemaWrap").hidden = mode !== "json_schema";
$("grammarWrap").hidden = mode !== "grammar";
}
$("constrain").onchange = syncConstrain;
syncConstrain();
$("previewTemplate").onclick = () => {
if (!app) { statusText("load a model first"); return; }
$("templatePreview").textContent = "rendering…";
app.preview_template({
messages: readMessages({ markers: true }),
prompt: $("prompt").value,
template_source: templateOverride(),
tools: $("tools").value.trim(),
template_kwargs: $("templateKwargs").value.trim() || "{}",
});
};
// --- tool calls, template params, conversation export ---------------------
function openAiToolCalls(calls) {
return calls.map((c, i) => ({
id: c.id || `call_${i}`,
type: "function",
function: {
name: c.name,
arguments: typeof c.arguments === "string" ? c.arguments : JSON.stringify(c.arguments ?? {}),
},
}));
}
// small local JSON tree: no CDN, the lab keeps working offline
function renderJson(value, parent) {
const leaf = (text, cls) => {
const s = document.createElement("span");
s.className = cls;
s.textContent = text;
parent.appendChild(s);
};
if (value === null) { leaf("null", "b"); return; }
if (Array.isArray(value)) {
const list = document.createElement("ul");
value.forEach((v, i) => {
const li = document.createElement("li");
const key = document.createElement("span");
key.className = "k";
key.textContent = `${i}: `;
li.appendChild(key);
renderJson(v, li);
list.appendChild(li);
});
parent.appendChild(list);
return;
}
if (typeof value === "object") {
const list = document.createElement("ul");
for (const [k, v] of Object.entries(value)) {
const li = document.createElement("li");
const key = document.createElement("span");
key.className = "k";
key.textContent = `${k}: `;
li.appendChild(key);
renderJson(v, li);
list.appendChild(li);
}
parent.appendChild(list);
return;
}
if (typeof value === "string") leaf(`"${value}"`, "s");
else if (typeof value === "number") leaf(String(value), "n");
else leaf(String(value), "b");
}
function renderToolCalls(row, calls) {
const box = document.createElement("div");
box.className = "toolcalls";
const head = document.createElement("div");
head.className = "tc-head";
head.textContent = `${calls.length} tool call${calls.length > 1 ? "s" : ""} parsed by the model's parser`;
box.appendChild(head);
for (const call of calls) {
const card = document.createElement("div");
card.className = "tc";
const title = document.createElement("div");
title.className = "tc-title";
title.textContent = call.name;
const meta = document.createElement("div");
meta.className = "tc-meta";
meta.textContent = call.id || "no id from the template";
const tree = document.createElement("div");
tree.className = "tc-json";
renderJson(call.arguments, tree);
// the tree is the default view; this is the same arguments as text, for
// copying or for seeing exactly what the model produced
const raw = document.createElement("pre");
raw.className = "tc-raw";
raw.hidden = true;
raw.textContent = JSON.stringify(call.arguments, null, 2);
const toggle = document.createElement("button");
toggle.className = "secondary";
toggle.textContent = "raw JSON";
toggle.title = "switch between the collapsible tree and plain JSON text";
toggle.onclick = () => {
const showRaw = tree.hidden;
tree.hidden = !showRaw;
raw.hidden = showRaw;
toggle.textContent = showRaw ? "raw JSON" : "tree";
};
const add = document.createElement("button");
add.className = "secondary";
add.textContent = "Add tool response";
add.onclick = () => {
const toolRow = addMessageRow("tool", "");
if (call.id) toolRow.querySelector(".toolid").value = call.id;
toolRow.querySelector(".content").focus();
toolRow.scrollIntoView({ block: "nearest" });
};
const actions = document.createElement("div");
actions.className = "buttons";
actions.append(toggle, add);
card.append(title, meta, tree, raw, actions);
box.appendChild(card);
}
row.appendChild(box);
}
// --- exports --------------------------------------------------------------
function download(name, text, type) {
const url = URL.createObjectURL(new Blob([text], { type }));
const a = document.createElement("a");
a.href = url;
a.download = name;
a.click();
setTimeout(() => URL.revokeObjectURL(url), 2000);
}
function stamp() {
const d = new Date();
const p = (n) => String(n).padStart(2, "0");
return `${d.getFullYear()}${p(d.getMonth() + 1)}${p(d.getDate())}-` +
`${p(d.getHours())}${p(d.getMinutes())}${p(d.getSeconds())}`;
}
// Markdown has no images: a placeholder stands in for each one
function contentAsText(content) {
if (typeof content === "string") return content;
if (!Array.isArray(content)) return "";
const images = content.filter((p) => p.type === "image_url").length;
const text = content.filter((p) => p.type === "text").map((p) => p.text).join("\n");
return [...Array(images).fill("<< image >>"), text].filter(Boolean).join("\n");
}
// export shape: OpenAI messages, multi-part content for messages with images
function exportMessages() {
return [...$("messages").querySelectorAll(".msg")].map((row) => {
const role = row.querySelector(".role").value;
const text = row.querySelector(".content").value;
const imgs = row.images.map((img) => img.dataUrl);
const message = {
role,
content: imgs.length
? [...imgs.map((url) => ({ type: "image_url", image_url: { url } })), { type: "text", text }]
: text,
};
if (role === "tool") {
const id = (row.querySelector(".toolid")?.value || "").trim();
if (id) message.tool_call_id = id;
}
if (row.toolCalls && row.toolCalls.length) message.tool_calls = row.toolCalls;
return message;
}).filter((m) => (typeof m.content === "string"
? m.content.length > 0
: true) || (m.tool_calls && m.tool_calls.length));
}
function toMarkdown(messages) {
const out = [];
for (const m of messages) {
const suffix = m.role === "tool" && m.tool_call_id ? ` (${m.tool_call_id})` : "";
out.push(`### ${m.role.toUpperCase()}${suffix}\n`);
const body = contentAsText(m.content);
if (body) out.push(body.trimEnd() + "\n");
if (m.tool_calls && m.tool_calls.length) {
out.push("**Tool calls**\n");
out.push("```json\n" + JSON.stringify(m.tool_calls, null, 2) + "\n```\n");
}
out.push("");
}
return out.join("\n");
}
$("exportJson").onclick = () => {
const messages = exportMessages();
if (!messages.length) { statusText("nothing to export"); return; }
download(`conversation-${stamp()}.json`, JSON.stringify(messages, null, 2), "application/json");
statusText(`exported ${messages.length} messages as JSON`);
};
$("exportMd").onclick = () => {
const messages = exportMessages();
if (!messages.length) { statusText("nothing to export"); return; }
download(`conversation-${stamp()}.md`, toMarkdown(messages), "text/markdown");
statusText(`exported ${messages.length} messages as Markdown`);
};
// --- static template parameters ------------------------------------------
function readKwargs() {
try {
const kw = JSON.parse($("templateKwargs").value || "{}");
return kw && typeof kw === "object" && !Array.isArray(kw) ? kw : {};
} catch (_) {
return {};
}
}
// One object, two editors: the Chat template tab (for experiments with the
// preview) and the inference rail (per-turn config). They mirror each other,
// so whichever place the user edits, preview and generation both see it.
const kwargBoxes = [$("templateKwargs"), $("runTemplateKwargs")];
const syncKwargs = (src) => {
for (const box of kwargBoxes) if (box !== src) box.value = src.value;
};
for (const box of kwargBoxes) box.addEventListener("input", () => syncKwargs(box));
$("templateKwargs").value = "{}";
syncKwargs($("templateKwargs"));
$("enableThinking").onchange = () => {
const kw = readKwargs();
if ($("enableThinking").checked) kw.enable_thinking = true;
else delete kw.enable_thinking;
$("templateKwargs").value = JSON.stringify(kw, null, 2);
syncKwargs($("templateKwargs"));
};
$("useMmproj").onchange = () => {
$("mmprojSelect").disabled = !$("useMmproj").checked || !models.some((m) => m.multimodal);
statusText($("useMmproj").checked
? "the selected mmproj is loaded with the next model load / engine reload"
: "no multimodal projector will be loaded");
};
// The button says what actually happens: a text model is downloaded and then
// loaded, a projector is only put into the library (nothing to start).
function syncIngestButtons() {
$("addUrl").textContent = $("urlMmproj").checked ? "Download projector" : "Download & load";
$("addFile").textContent = $("fileMmproj").checked ? "Add to library" : "Add & load";
}
$("urlMmproj").onchange = syncIngestButtons;
$("fileMmproj").onchange = syncIngestButtons;
syncIngestButtons();
// The threaded module needs SharedArrayBuffer, i.e. a cross-origin isolated
// page. Without COOP/COEP the single-thread module is what the worker loads,
// and asking for threads would only be a lie.
const threadsAvailable = typeof SharedArrayBuffer === "function" && window.crossOriginIsolated === true;
const cores = navigator.hardwareConcurrency || 1;
// The pthread module pre-spawns its worker pool from a JS expression at
// startup (-sPTHREAD_POOL_SIZE in scripts/build-wasm.sh), so this cap is
// also the useful upper bound: asking for more would wait forever on a
// worker that was never created.
const threadCap = Math.max(1, Math.min(cores, 8));
threadsUsable = threadsAvailable;
// ?threads=N still wins, including ?threads=1 to force single-thread.
const wantedThreads = Number(new URLSearchParams(location.search).get("threads")) || 0;
if (threadsAvailable) {
$("threads").max = String(threadCap);
$("threads").value = String(wantedThreads > 0
? Math.min(threadCap, wantedThreads)
: Math.min(threadCap, 4));
$("threadsHint").textContent =
`pthread wasm active (${cores} cores, pool of ${threadCap}) - changing this rebuilds the context`;
} else {
$("threads").value = "1";
$("threads").disabled = true;
$("threadsHint").textContent =
"single-thread build: this page is not cross-origin isolated (threads need " +
"COOP/COEP headers and SharedArrayBuffer)";
}
// --- embedding API (postMessage) ------------------------------------------
//
// parent -> frame : { type: "llmjs:run", id?, messages | prompt,
// images?, max_tokens?, temperature?, top_p?, top_k?,
// repeat_penalty?, repeat_last_n?, seed?, stop?, tools?,
// template_kwargs? }
// { type: "llmjs:stop" }
// frame -> parent : llmjs:api {version}, llmjs:ready {model,n_ctx,threads},
// llmjs:token {id,text}, llmjs:done {id,text,stats},
// llmjs:error {id,error}
//
// A model still has to be loaded in the frame first (the library lives here);
// this iteration exposes chat completion only, which is the part a host page
// needs to put a local model behind an existing UI.
window.addEventListener("message", (e) => {
if (!e.data || typeof e.data !== "object" || e.source !== window.parent) return;
const msg = e.data;
if (msg.type === "llmjs:stop") {
if (embedJob && app) app.stop();
return;
}
if (msg.type !== "llmjs:run") return;
const reply = (type, extra) =>
parent.postMessage({ type, id: msg.id === undefined ? null : msg.id, ...extra }, "*");
if (!app || !loadedId) {
reply("llmjs:error", { error: "no model is loaded in the frame" });
return;
}
if (embedJob) {
reply("llmjs:error", { error: "a run is already in progress" });
return;
}
const messages = Array.isArray(msg.messages) && msg.messages.length
? msg.messages
: (msg.prompt === undefined ? [] : [{ role: "user", content: String(msg.prompt) }]);
if (!messages.length) {
reply("llmjs:error", { error: "no messages or prompt" });
return;
}
embedJob = { id: msg.id === undefined ? null : msg.id, text: "" };
setState("generating");
app.run({
mode: "chat",
messages,
images: Array.isArray(msg.images) ? msg.images : [],
max_token_len: msg.max_tokens || 96,
temp: msg.temperature === undefined ? 0.7 : msg.temperature,
top_p: msg.top_p === undefined ? 0.9 : msg.top_p,
top_k: msg.top_k === undefined ? 40 : msg.top_k,
repeat_penalty: msg.repeat_penalty === undefined ? 1.1 : msg.repeat_penalty,
repeat_last_n: msg.repeat_last_n === undefined ? 32 : msg.repeat_last_n,
seed: msg.seed === undefined ? -1 : msg.seed,
stop: Array.isArray(msg.stop) ? msg.stop : [],
tools: msg.tools ? JSON.stringify(msg.tools) : "",
template_kwargs: msg.template_kwargs ? JSON.stringify(msg.template_kwargs) : "{}",
});
});
if (window.parent !== window) {
parent.postMessage({ type: "llmjs:api", version: 1 }, "*");
}
setState("idle");
refreshModels();
</script>
</body>
</html>
|