How are differences shown in the report?

The HTML report lists every sentence in reading order with its page number: added in green, removed in red and struck through, unchanged in grey.

Are page numbers, line breaks and capital letters ignored?

Page numbers, line breaks and spacing are ignored, and words hyphenated across lines are rejoined. A change in capitalisation or punctuation counts as a change.

What about documents that were almost completely rewritten?

When a long stretch changed almost entirely, that stretch is shown as removed and re-added rather than matched sentence by sentence.

Tools ›

Compare two PDFs

See what changed between two versions of a document: every sentence added or removed, with page numbers, in one report.

Open Compare two PDFs →Free · no sign-up · your file never leaves your browser

When you'd use it

The landlord sent a revised lease and you want to know which clauses changed.
Your co-author returned the thesis chapter without tracked changes.
A supplier's updated terms and conditions arrived and you want only the new wording.

Just say what you need

There are no menus to learn. Drop your file on pdfagents.ai and type it the way you would say it:

“what changed between these two versions?”
“compare the old and the new contract”
“diff these”

How it works

Drop both PDFs (or drop one and add the other when asked).
Say which one is the old version.
Read the first changes in the chat and download the full report.

A text comparison: it finds changed wording, not moved images or layout. Scans need OCR first.

Questions

How are differences shown in the report?: The HTML report lists every sentence in reading order with its page number: added in green, removed in red and struck through, unchanged in grey.
Are page numbers, line breaks and capital letters ignored?: Page numbers, line breaks and spacing are ignored, and words hyphenated across lines are rejoined. A change in capitalisation or punctuation counts as a change.
What about documents that were almost completely rewritten?: When a long stretch changed almost entirely, that stretch is shown as removed and re-added rather than matched sentence by sentence.

Private, and it keeps going

Your document is opened and saved on your own device, never uploaded. When the result is ready, type the next request (rotate, compress, add a password) and it applies to the result.

Compare two PDFs, right now

A report of every sentence added, removed or changed between two versions.

Open Compare two PDFs →

Doing this often? The free Mac app runs this agent on whole folders, offline, with no page limit. See the Mac app →