Compare two versions of a PDF page by page โ see added, removed and modified content side by side, overlaid, or in a difference summary you can export. Have Word or Excel files? Convert to PDF first, then compare.
โญ Freeโก Fast๐ Secure๐ซ No Login Required
Original version
The earlier document
Revised version
The newer document
Compares text content page by page and highlights what was added, removed, or changed. PDFs over 60 pages are compared up to that limit.
Both documents are processed entirely in your browser โ never uploaded to a server.
๐Your files are automatically deleted after processing and are never shared with third parties.
Supported Formats
Two PDFs in (original + revised) โ page-aware text comparison, with an optional visual layout check.
Common Uses
โขChecking what changed in a contract before signing a new draft
โขReviewing edits between two versions of a policy or HR document
โขSpotting wording changes between drafts of an agreement sent back and forth
โขVerifying a procurement or quality document matches an earlier approved version before publishing
โขComparing two rounds of an academic revision
๐ก Pro Tip
For documents that go through several rounds of edits, compare against the most recently approved version rather than the original draft โ comparing against an outdated baseline surfaces changes that were already accepted.
Compares two versions of a PDF page by page and shows what was added, removed, or modified โ with side-by-side, overlay, and page-by-page views, plus an exportable difference report. It compares text content (and, optionally, a rendered-page visual check); it is not a full geometric image diff.
When to use this
Use this to spot exactly what changed in the wording between two drafts of a contract, policy, HR document, procurement document, or academic revision โ without manually reading both side by side.
Step-by-step workflow
1Upload both PDFs Add the original version and the revised version. If a document is already active in your workspace, it prefills the original slot automatically.
2Choose comparison options Optionally ignore insignificant whitespace, ignore page-number changes, or turn on a visual layout check for image/formatting differences text alone would miss.
3Review the results Switch between the Difference Summary, Side by Side, Page by Page, and Overlay views, and step through changes with next/previous navigation.
4Export a report (optional) Download a PDF report listing the compared files, pages affected, and every detected change โ useful for records or handing off to someone else.
Tips for best results
โThe difference summary lets you click any change to jump straight to that page in Page by Page view for full context.
โTurn on "Also compare visual layout" when you need to catch a moved image or reflowed section that reads identically as text but looks different on the page.
โIf either PDF is a scan with no real text, this tool can't compare it โ run OCR PDF on both first.
โThe exported report lists detected differences only โ it does not judge their legal or practical significance, so still have a qualified person review anything that matters.
Common mistakes to avoid
โ Treating the visual layout check as a full image diff โ it flags pages that look meaningfully different at a glance, not precise pixel-level or geometric changes.
โ Comparing a scanned PDF directly โ with no extractable text, there's nothing to compare; OCR both files first.
โ Comparing two genuinely different documents rather than two versions of the same one, which produces an unhelpfully large diff.
