Compare Two PDF Documents
Spot revisions between contracts, legal briefs, and reports instantly. Inspect changes side-by-side, view red/green pixel diff overlays, or track word-by-word edits.
Compare Two PDF Documents
Upload two versions of a contract, agreement, or resume. View differences side-by-side with clean red/green highlights and synchronized page scrolling.
How to Compare PDF Files Online
Upload Both Versions
Drop your original PDF into Doc A and your edited PDF into Doc B.
Select Comparison Mode
Switch between Side-by-Side view, Pixel Diff Heatmap, or Word Track Changes.
Review Differences
Navigate page-by-page to verify clause updates, signature additions, and deletions.
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Frequently Asked Questions
How does the PDF comparison work?+
PDFCraft renders both documents side-by-side using high-precision in-browser rendering. It computes a pixel-by-pixel difference overlay (highlighting deletions in red and additions in green) and performs word-by-word text comparison to identify changes between versions.
Are my confidential documents uploaded to any server?+
No. All comparison, rendering, and text analysis happen 100% locally in your web browser. Neither Document A nor Document B ever leaves your device.
Can I compare scanned PDFs or image-based contracts?+
Yes! The Visual Difference Overlay mode compares visual pixels directly, making it effective for scanned documents, agreements with new stamps, signatures, or layout changes even when text streams differ.
Can I compare multi-page PDF documents?+
Yes. You can navigate through pages using the Page selector (Page 1 of N). Both documents will synchronize to the same page number for comparison.
Is this comparison tool free to use?+
Yes, 100% free with no page limits, no mandatory sign-ups, and no watermarks on your files.