pdffusion
← All tools

Compare

See what changed between two versions of a PDF.

Drop your files here

PDF files

Compare two PDFs online: see the differences

Drop the old version, then the new one: the differences appear instantly, word by word. Click Compare to download the report. Everything happens in your browser.

What is it for?

  • Check what changed in a contract or lease before signing it.
  • Review the corrections made to a report or thesis.
  • Compare two versions of a regulation or official text.

How does it work?

  1. 1Drop the old versionThen the new one, in that order.
  2. 2Read the differencesGreen shows what was added, red struck through what was removed.
  3. 3Click CompareYou download a report to keep or print.

Why pdffusion?

  • 100% free

    No subscription, no credit card, no watermark added to your documents.

  • No sign-up

    No account to create: open the page, drop your files, done.

  • Your files stay yours

    Processed, then deleted right away. We keep neither your documents nor your data.

  • Every format

    PDF, Word, Excel, PowerPoint, OpenDocument, images, EPUB… from a computer or a phone.

Frequently asked questions

Are my documents uploaded?

No: the comparison happens entirely in your browser.

Can I compare scanned documents?

Yes, after running them through the Read a scan tool, which extracts their text.

Is pdffusion really free?

Yes. Every tool is free, with no watermark and nothing locked behind a subscription. No credit card is ever requested.

Do I need an account?

No. No sign-up, no email address: you use the tools right away.

Are my documents kept?

No. Your files are only used for the task you asked for, then deleted. Nobody reads them and they are never shared.

Does it work on a phone?

Yes. pdffusion runs in the browser of any phone, tablet or computer (Android, iPhone, Windows, Mac, Linux), with nothing to install.

Which formats are supported?

PDF, Word (DOCX, DOC), Excel (XLSX, XLS, CSV), PowerPoint (PPTX, PPT), OpenDocument (ODT, ODS, ODP), RTF, images (JPG, PNG, WebP, AVIF, HEIC (iPhone), TIFF, GIF, SVG), EPUB, TXT, HTML and more.

Are there any limits?

You can process up to 500 files at once, and a produced document can have up to 10,000 pages.