Create app.py

app.py

@@ -0,0 +1,46 @@
+import gradio as gr
+from pypdf import PdfReader, PdfWriter
+
+def merge_pdfs(files):
+    if not files:
+        return None
+
+    writer = PdfWriter()
+
+    for f in files:
+        reader = PdfReader(f.name)
+        for page in reader.pages:
+            writer.add_page(page)
+
+    output_file = "merged.pdf"
+    with open(output_file, "wb") as out_f:
+        writer.write(out_f)
+
+    return output_file
+
+
+with gr.Blocks(title="PDF Notes App") as demo:
+    gr.Markdown(
+        """
+        # 📄 PDF Notes App  
+        Upload multiple PDF files and merge them into a single PDF.
+        """
+    )
+
+    pdfs = gr.File(
+        file_types=[".pdf"],
+        file_count="multiple",
+        label="Upload PDF Files"
+    )
+
+    merge_btn = gr.Button("Merge PDFs")
+    output_pdf = gr.File(label="Merged PDF")
+
+    merge_btn.click(
+        fn=merge_pdfs,
+        inputs=pdfs,
+        outputs=output_pdf
+    )
+
+if __name__ == "__main__":
+    demo.launch()