Chat with PDF

Chat with PDF

Ask a PDF questions and get answers with page citations.

Upload a report, a paper, or a 400-page manual and query it in plain language. Every answer links back to the exact page and paragraph where the information came from, so you can verify at a glance.

Files auto-deleted within 1 hour · no signup for basic use

How it works

Four calm steps.

  1. 01

    Drop your file

    Drag the PDF you want to interrogate onto the upload card, or click to pick it from your device. You can also paste a link to a file hosted online.

  2. 02

    Ask anything

    Type a question the way you would ask a colleague. Follow-ups keep context – no need to re-explain the document each time.

  3. 03

    Verify with citations

    Each answer includes clickable references to the source pages so you can double-check the model.

  4. 04

    Export the conversation

    Save the chat as PDF or Markdown for your notes, a report, or a teammate.

Why Chat with PDF

Built to be the last chat with pdf tool you try.

Cites its sources

Answers come with page numbers and quoted snippets, not black-box summaries.

Long documents welcome

Handles PDFs of several hundred pages without truncating context.

Private by default

Uploads travel over TLS, files are encrypted at rest, and every trace is deleted within 60 minutes. We do not read, index, or train on your documents.

Multilingual

Ask in one language, get answers in another. Great for translated research.

FAQ

Questions people ask.

Which model is used?

A modern general-purpose LLM tuned for retrieval over your document. We do not train on your uploads.

Can I upload scanned PDFs?

Yes. OCR runs automatically before indexing.

Is PDF Books Lib really free?

Yes. The free tier covers everyday use – you can chat with several files per hour without an account. Pro unlocks larger uploads and batch jobs.

What happens to my files?

They live in an encrypted staging area for at most one hour, then they are permanently deleted. Nobody on our team can browse them.

Do I need to install anything?

No. Everything runs in your browser against our servers – Windows, macOS, Linux, iOS and Android are all supported.

Is Multilingual free to use?

Yes. Multilingual is free on the no-signup tier with no watermark added to your files. A paid plan only lifts batch and file-size limits for heavy users.

Do I need to install software or create an account for Multilingual?

No. Multilingual runs entirely in your browser - there is nothing to download and no account is required to get started.

Are my files private when I use Multilingual?

Yes. Uploads travel over an encrypted connection, are processed in an isolated pipeline, and are permanently deleted from our servers within 60 minutes. We never read, index or train on your documents.

What is the largest file Multilingual can handle?

On the free tier Multilingual accepts files up to 100 MB. Larger documents are supported on the paid plan, or you can split a big file first.

Does Multilingual work on mobile and every browser?

Yes - Multilingual is fully responsive and works in Chrome, Safari, Edge and Firefox across Windows, macOS, Linux, iOS and Android.

How accurate is Multilingual?

Multilingual uses a modern language model tuned for documents. Results are high quality for most files; always review the output for critical work.