README.md

---
license: other
license_name: per-component-lgpl-3.0-and-apache-2.0
---

# PlayTranslate OCR models

On-device OCR model packs for the **PlayTranslate** Android app, converted to
[MNN](https://github.com/alibaba/MNN) format for mobile inference. Each
subdirectory is one downloadable pack referenced by the app's model catalog; the
app fetches the individual files directly and verifies a pinned SHA-256 per file.

## Packs

| Pack | Files | Size | Source | License |
|------|-------|------|--------|---------|
| `meiki-ja` | `det.mnn`, `rec_horizontal.mnn`, `rec_vertical.mnn` | 46.7 MB | Meiki OCR — D-FINE detector + horizontal/vertical recognizers (Japanese) | LGPL-3.0 |
| `paddle-rec-cjk` | `rec.mnn`, `keys.txt` | 16.6 MB | PaddleOCR PP-OCRv5 — Chinese (Simplified/Traditional) + Japanese + English | Apache-2.0 |
| `paddle-rec-latin` | `rec.mnn`, `keys.txt` | 8.0 MB | PaddleOCR PP-OCRv5 — Latin scripts (French, Spanish, German, …) | Apache-2.0 |
| `paddle-rec-korean` | `rec.mnn`, `keys.txt` | 13.4 MB | PaddleOCR PP-OCRv5 — Korean | Apache-2.0 |
| `paddle-rec-arabic` † | `rec.mnn`, `keys.txt` | 8.0 MB | PaddleOCR PP-OCRv5 — Arabic | Apache-2.0 |
| `paddle-rec-cyrillic` † | `rec.mnn`, `keys.txt` | 8.0 MB | PaddleOCR PP-OCRv5 — Cyrillic (Russian, Ukrainian, …) | Apache-2.0 |
| `paddle-rec-devanagari` † | `rec.mnn`, `keys.txt` | 7.9 MB | PaddleOCR PP-OCRv5 — Devanagari (Hindi, Marathi, …) | Apache-2.0 |
| `paddle-rec-thai` † | `rec.mnn`, `keys.txt` | 7.9 MB | PaddleOCR PP-OCRv5 — Thai | Apache-2.0 |
| `manga-ocr-ja` | `encoder.mnn`, `decoder.mnn`, `vocab.txt` | 67.2 MB | manga-ocr-base-2025 — ViT-tiny + 2-layer decoder whole-block Japanese recognizer (opt-in MangaOCR refinement) | Apache-2.0 |

† Hosted ahead of in-app language wiring (support coming soon). The first four packs
are live in the app; these four are downloadable and integrity-pinned but not yet
mapped to a selectable source language.

The shared PaddleOCR PP-OCRv5 DBNet text detector is bundled inside the app APK
(not hosted here) and is paired with whichever recognizer pack above the source
language selects.

## Licenses & attribution

- **Meiki OCR** — GNU LGPL-3.0. Converted to MNN for on-device use; conversion
  scripts available on request.
- **PaddleOCR PP-OCRv5 recognizers** — © PaddlePaddle Authors, Apache-2.0
  (https://github.com/PaddlePaddle/PaddleOCR). Converted to MNN.
- **MangaOCR (`manga-ocr-ja`)** — `manga-ocr-base-2025` © jzhang533, Apache-2.0
  (https://huggingface.co/jzhang533/manga-ocr-base-2025, weights at revision
  `1e64d5be`; redistribution expressly confirmed by the author in the repo's
  discussion #1), based on **manga-ocr** by Maciej Budyś (kha-white), Apache-2.0
  (https://github.com/kha-white/manga-ocr). Modification: converted to fp16 MNN
  for on-device use. The manga-ocr model family is trained using the
  **Manga109-s** dataset, whose use is hereby acknowledged per its terms
  (http://www.manga109.org/).
- **MNN** runtime/format — © Alibaba, Apache-2.0 (https://github.com/alibaba/MNN).