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Compare PDF

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Compare two PDF documents visually with side-by-side and diff overlay.

100% On-Device

Recommended Workflow

Compare two PDF revisions side-by-side with visual change highlights and page synchronization.

How to Use Document Verification & Revisions

Inspect two versions of a PDF side-by-side or with visual diff overlay. Instantly spot contract modifications, layout shifts, and textual edits.

1

Upload Document A & B

Select Document A (Original baseline) and Document B (Revised draft).

2

Select Comparison Mode

Choose between Side-by-Side synchronized viewing or Visual Diff Overlay mode.

3

Review Differences

Step through pages to view additions highlighted in green and deletions highlighted in red.

Frequently Asked Questions

How does Visual Diff highlight changes?
It renders both pages and marks pixels added in Document B in green, and pixels removed from Document A in red.
What if the two documents have different page counts?
FolderBit alerts you to page count mismatches while still allowing you to compare matching pages.
Are our contracts uploaded to an external server?
No. Both PDF files are parsed, rendered, and compared entirely inside your local browser memory.

Related Document Tools

Logical next steps or alternative workflows for your document.

Edit PDF

Edit existing text, add text, images, signatures, links, fill & create forms, whiteout, redact, and annotate pages directly in your browser.

AI Summarizer

Create a cited summary from a document with clickable page citations.

100% Private Client-Side PDF Comparison

Compare contract revisions, blueprints, or documents visually without sending files to any server.

Document A (Original)
Select Original PDFReference or baseline version
Document B (Modified)
Select Modified PDFNew draft or revised version