Compare two PDF files side by side and instantly spot every difference: visual pixel comparison with highlighted changes plus word-by-word text diff. Fast, secure and protected processing, private by design, no sign up and completely free.
Drop first PDF
Drop second PDF
Comparison mode
Tip: use Visual compare to catch layout, image, stamp and signature changes, and Text compare to see exact wording edits. Your documents are fully protected and never collected, stored or shared.
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Three simple steps. No account, no watermark, no waiting.
Drop the original PDF on the left and the modified version on the right, or tap the buttons on mobile.
Visual compare highlights every changed pixel in red, while Text compare shows exact word by word additions and deletions.
Browse page by page, scan the whole document for changed pages in one click, and download the highlighted difference image.
Professional document comparison, free on any device.
Contracts, invoices and legal documents are handled by secure protected processing and are never collected, stored or shared with anyone.
Every changed pixel is highlighted in red on a difference view, instantly exposing moved logos, edited images, added stamps and layout shifts.
Extracted text from both versions is compared word by word: deletions appear struck through in red and additions highlighted in green, exactly like professional redlining.
Scan every page pair in one click and get an instant list of exactly which pages changed, with tap-to-jump buttons for each one.
Export the highlighted difference view of any page as a PNG image, perfect for sharing review feedback or keeping an audit record.
Different page counts, sizes and orientations are handled gracefully: extra or missing pages are flagged clearly so nothing slips through.
Fully mobile optimized: panes stack vertically on phones, navigation is thumb friendly, and comparisons run just as well on Android and iPhone.
No watermark, no page limit tricks, no sign up, no trial. Compare unlimited PDF pairs of up to 200 pages each, at zero cost, forever.
This PDF compare tool places two versions of a document side by side and finds every difference between them, both visually and in the text. It is ideal for checking contract revisions, verifying invoice corrections, reviewing edited reports, proofing print files and confirming that nothing was quietly changed in a document you are about to sign. Everything is handled by secure protected processing, so confidential files are never collected, stored or shared.
Visual compare renders each page pair and paints changed pixels red on a dedicated difference view, which catches things text comparison cannot: replaced images, moved logos, new stamps and signatures, font changes and layout shifts. Text compare extracts the words from both versions and produces a professional redline, with deletions struck through in red and additions highlighted in green, plus a count of changed words per page.
Comparing document versions manually is slow and risky: a single changed number in a contract or invoice can be expensive. The full document scan checks every page pair in one click and lists exactly which pages differ, so a fifty page agreement can be verified in seconds. Pair it with our free PDF Editor to fix what you find, or Merge PDF to combine approved versions.
Load the older version as PDF A and the newer one as PDF B so additions and deletions read naturally. Scanned PDFs compare best in Visual mode, since scanners add tiny pixel noise; text based PDFs shine in Text mode. If two files have different page counts, the scan list flags the extra pages so you immediately know where content was inserted or removed.
All tools are fast, secure and private by design.
Add the original PDF on the left and the modified version on the right. The tool instantly shows both documents side by side with every pixel difference highlighted in red, or switch to Text compare for a word by word redline. No sign up, no watermark, no limits.
Yes. Your documents are handled by secure protected processing and are never collected, stored or shared with anyone. They are permanently gone the moment you close or leave the page, which makes the tool safe for contracts, invoices and legal files.
Visual compare renders each page and highlights every changed pixel in red, catching image swaps, moved logos, added stamps, signatures and layout shifts. Text compare extracts the words from both versions and shows deletions struck through in red and additions highlighted in green, with a changed word count.
Yes. Press Scan all pages and the tool compares every page pair in one pass, then lists exactly which pages contain changes with tap-to-jump buttons, so even a hundred page contract is verified in seconds.
Extra or missing pages are flagged clearly: a page that exists in only one version is shown as fully different and appears in the scan list, so inserted or deleted pages are impossible to miss.
Yes. Scanned documents compare best in Visual mode, which highlights any region that changed between the scans. Text compare needs selectable text, so it works on digitally created PDFs rather than pure image scans.
Yes. On any page in Visual compare, press Download diff to save the highlighted difference view as a PNG image, ideal for sharing review feedback or keeping an audit record of what changed.
Each PDF can be up to 50 MB and 200 pages, and the tool is completely free with no watermark, no daily limit and no sign up. It is supported by the ads on the page, and comparing always stays free.