To summarise a PDF with AI, add your own API key in Settings once, choose a length, and press Summarise. The text of your PDF is sent directly from your browser to the AI provider you picked.

Text from your PDF is sent straight to the AI provider you chose in Settings, using your own API key. It does not pass through iDuckPDF’s servers.

Length

Answer language (blank = same as document)

How to use Summarise with AI

Step 1

Add your API key in Settings (OpenAI, Anthropic or Google).

Step 2

Add your PDF and choose the length and language.

Step 3

Press Summarise and read or copy the result.

What people use it for

• Get the gist of a long report

• Extract key points from a contract

• Skim a research paper

Frequently asked questions

Does iDuckPDF see my document?

No. Your browser sends the text straight to the AI provider you chose, using your key. We do not receive it.

What does it cost?

The site is free. The AI provider bills your account for usage, so set a spending limit on your key.

Where do my files go?

Most tools work entirely inside your browser tab, so the PDF is processed on your device and not uploaded to us. The AI tools are the exception: with your own key, the text of your PDF is sent to the AI provider you choose, and they say so before you start.

Do I need an account, and is there a limit?

No account, no watermark and no daily limit set by the site. Very large files are limited only by your device’s memory.

Last updated 2026-11-08.

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