Why is a visual comparison better than a text diff?
A text diff misses anything that is not text: a swapped figure, a moved signature block, an altered chart or a changed layout. Visual comparison catches all of those.
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Compare PDF
Compare two versions of a PDF page by page and get a visual report with the changed areas highlighted. It catches silent edits that a text diff misses, including moved images and altered figures. It is free, needs no account, and adds no watermark to your result.
Built for: compare pdf
Deleted as soon as you download itFree · fair-use only
Drop PDF files herePDF output · up to 100 files
Included in this tool
Two-file comparisonSide-by-side pagesPixel-change highlightingDownloadable report
When you need this
What people use it for.
Checking what actually changed between two contract revisions
Verifying that a supplier returned the document you sent, unaltered
Reviewing a re-exported design or report for unintended changes
How it works
What happens to your file.
Both documents are rendered page by page and compared visually, and a side-by-side report is generated with differing pixels highlighted, so layout and image changes are visible and not just text.
Where it stops: This is a visual comparison, so a change in an invisible property such as metadata will not appear. Pages that shift position can flag a whole page as changed.
What this tool includes
Everything you need, without a paywall.
Two-file comparison
Side-by-side pages
Pixel-change highlighting
Downloadable report
Questions
Common questions.
Why is an entire page marked as changed?
If content reflowed or shifted, every element after that point moves, so the whole page differs visually. Compare the highlighted regions to see what actually moved.
Do the documents need the same page count?
They compare best when they do. Where page counts differ, the extra pages are reported as added or removed.
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