Chat with your PDF — without uploading it

Contracts, medical records, financial statements — exactly the files you'd never paste into a cloud chatbot. This tool reads them, answers your questions, and cites its sources, all on your device. Disconnect your internet to test it.

How it works

1

Drop your document

PDF, Word, PowerPoint, Markdown, or plain text — drag it in or pick it from a file dialog. Nothing is uploaded; the file never leaves your browser.

2

Ask it a question

"What's the notice period for termination?" "Summarize the payment terms." Type it like you'd ask a person — the app finds the exact passages that answer it and, on capable devices, writes you a short answer.

3

Check the source

Every answer carries numbered citations. Click one and the built-in viewer jumps straight to that page and highlights the exact passage — you never have to just trust it.

Why nothing leaves your computer

  • A one-time setup download teaches your browser to read documents and write answers. It's cached on your device — after that, no internet connection is needed at all.
  • Your documents are read directly in your browser, and everything the app remembers about them is stored on this device — there is no server in the loop.
  • Disconnect your internet to test: chatting keeps working, because nothing about it ever needed the network.

Answers you can verify

Cloud "chat with PDF" tools cite loosely, if at all — you're asked to just trust the answer. This tool answers using only the passages it actually retrieved from your document, marks every claim with a numbered citation, and refuses to guess: if it can't find something in your files, it says so instead of making it up.

Click any citation to open the source document at that exact page, passage highlighted. The answer is never the last word — the source always is.

Supported file types

PDF Text-based PDFs, with citations linked to the exact page (scanned-image PDFs are listed honestly as unreadable for now)
Word .docx and legacy .doc, with section headings preserved in citations
PowerPoint .pptx slide decks
Markdown & plain text .md and .txt files

Frequently Asked Questions

Is my document uploaded anywhere? +
No. Your documents, your questions, and every answer are read and written entirely on your device. Nothing is sent anywhere — you can disconnect your internet after the one-time setup and keep chatting.
Does it work offline? +
Yes, after the one-time setup downloads (which are cached in your browser), the whole thing — reading your documents, finding passages, and writing answers — runs with no internet connection at all.
What browsers are supported? +
Every modern browser can drop in documents and get exact matching passages instantly. Written, conversational answers additionally need a browser with modern graphics-acceleration support (recent Chrome, Edge, Firefox, and Safari all qualify) — if yours doesn't, you still get full passage answers, just not a written paragraph.
Why does the first question take a while? +
The very first time, your browser downloads the on-device reading and answering engines and caches them — that's a one-time wait. You can start getting matching passages within seconds of dropping a document, even before that finishes.
What about scanned PDFs? +
A scanned PDF is a photo of a page, so it has no real text to read yet — the app tells you honestly instead of pretending to have read it. On-device text recognition for scans is planned.