Does this upload my PDF to a server?

No. The AI model runs entirely in your browser using WebAssembly and Web Workers. Your PDF never leaves your device. You can verify this by checking the Network tab in DevTools — no file upload will appear.

What AI model does this use?

ExactPDF uses DistilBERT (distilbert-base-uncased-distilled-squad) via the Transformers.js library from Hugging Face. The model is ~80MB and downloads once, then is cached in your browser permanently.

Does it work on scanned PDFs?

The AI can only answer questions based on extractable text. Scanned PDFs that are images of text will not work well — use our OCR tool first to extract the text, then use AI Chat.

Can I use this without internet after the first load?

Yes. Once the model has downloaded (~80MB on first use), it is cached in your browser. After that, AI Chat with PDF works fully offline.

What types of questions can I ask?

You can ask about the content of the document: summaries, key points, specific facts, dates, names, definitions. The AI answers based only on the text in your PDF.

AI Chat with PDF

100% Private

100% Local

No Signups

Chat with Any PDF — AI That Runs in Your Browser

Upload a PDF and ask it anything. The AI reads your document and answers questions — 100% offline, no data sent to any server.

No Internet Required

Files Stay on Your Device

Runs in Browser

Drop your PDF here to start chatting

Contracts, reports, research papers, books — any PDF

Select PDF

100% Private

Instant

Your files never leave your device

Max file size: 50MB

🔒 How Your Privacy Is Protected

Most AI PDF tools (ChatPDF, Adobe AI, etc.) upload your document to their servers. ExactPDF is different:

The AI model runs entirely in your browser
Your PDF is never sent anywhere
Works offline after the first load
No account, no API key, no cost