Compare two PDFs — spot every change
DocsArc compares two versions of a PDF and shows you exactly what changed — as an overlay, a pixel difference, or a text diff — so a revised drawing or contract never hides a surprise edit.
Both files are compared locally, so two confidential revisions can be diffed without uploading either one.
Try it now — free
Runs on your device. Your file is never uploaded.
Why use DocsArc for this
Three ways to compare
Overlay the revisions, highlight changed pixels, or diff the text — whichever makes the change obvious.
Built for drawings
Designed for engineering and construction sets where a small markup change matters.
Private comparison
Neither revision is uploaded — the diff runs entirely on your device.
How to compare pdf with DocsArc
- 1Open the original and revised PDF in DocsArc.
- 2Choose overlay, pixel or text comparison.
- 3Review the highlighted differences between the two versions.
- 4Mark up or export your findings — both files stayed local.
Frequently asked questions
Can I compare drawing revisions?
Yes. DocsArc offers overlay and pixel comparison built for drawings, plus a text diff, so even small markup changes stand out.
Are both PDFs uploaded to compare them?
No. The comparison runs in your browser, so two confidential revisions can be diffed privately.
Can I see text changes specifically?
Yes. The text-diff mode highlights inserted and removed text between the two versions.