Compare two PDFs — see what text changed, free

Upload two versions of a PDF and get a redline showing every added and removed word.

Compare two PDFs

Upload an old and a new PDF — see exactly what text changed.

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Drop the old version and the new version — we compare the text and hand back a clean redline: additions in green, deletions in red. No watermarks, no account, nothing to install. This compares the text layer, so it's instant and exact on real (non-scanned) PDFs.

Frequently asked questions

How does it detect changes?+

It reads the text layer of each PDF and diffs the words, so it catches copy edits — a changed price, a reworded clause — regardless of reflow or spacing.

Does it work on scanned PDFs?+

No. Scanned or image-only PDFs have no text layer to compare. The result will tell you if a file couldn't be read.

Does it compare layout or images?+

No — this is a text comparison only. Fonts, positioning, and images aren't analyzed.

Do you keep my files?+

No — files uploaded through the free tool are deleted automatically a few hours after the run.

Need this at scale?

Chain this into a full pipeline — extract, transform, route, deliver — and run hundreds at once.

Automate document comparison at scale