Is my PDF uploaded to a server?

No. The PDF is processed entirely in your browser. The AI model indexes the document locally and answers your questions without any upload.

How large can the PDF be?

It handles PDFs up to several hundred pages. Larger documents may take longer to index on first load.

Does it cite its sources?

Yes, answers include references to the relevant sections of the document so you can verify the information.

Is my PDF uploaded to a server?

No. The PDF is processed entirely in your browser. The AI model indexes the document locally and answers your questions without any upload.

How large can the PDF be?

It handles PDFs up to several hundred pages. Larger documents may take longer to index on first load.

Does it cite its sources?

Yes, answers include references to the relevant sections of the document so you can verify the information.

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AI PDF Reader

Upload PDFs and ask questions about specific documents. Get page-by-page summaries, compare documents side-by-side, and search with AI-powered Q&A.

100% LOCALMulti-PDF uploadTF-IDF search100% localSemantic Q&A

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1. Upload your PDF

Upload one or more PDF, TXT, CSV, or Markdown files. Documents are parsed with PDF.js, split into chunks, and indexed using TF-IDF vectorization — all in your browser.

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2. Choose Search or Q&A mode

In Search mode, find relevant passages by keyword with relevance scores. In Q&A mode, the local AI reads the top results and generates a synthesized answer with source citations.

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3. Ask a question

Type your question about the document and press Enter. The system ranks all text chunks by relevance using cosine similarity and returns the best matches.

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4. Preview & export

Read the full document text in the preview panel. Copy AI answers or search results for your notes. Switch between documents with one click.

💡 Tips

• Q&A mode requires an AI model download (~200MB) on first use. Search mode works instantly without any download.

• The reader uses PDF.js for parsing — it works with text-based PDFs but not scanned image PDFs (OCR not supported).

• For best results, ask specific questions like "What are the payment terms?" rather than broad queries like "Tell me about the contract".

• You can upload multiple documents and search across all of them simultaneously.

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