Compare PDF
Spot the words added, removed, or changed between two PDF versions side by side, with no upload.
Processed on your device, not uploaded.
How to Compare Two PDF Files
- 1
Select the Original PDF
The earlier version or reference copy.
- 2
Select the Revised PDF
The newer version, then differences are highlighted.
- 3
Review the Differences
Five views, such as Side by Side and Overlay.
- 4
Download the Report
Press Create Comparison Report, then Download PDF.
Compare PDF Features
Changed Words Highlighted
Words added, removed, or changed are highlighted for a quick review.
Five Review Modes
Side by Side, Overlay, Added, Removed, or Changes.
Side-by-Side PDF Report
Original on the left, revision on the right, with red, green, and orange.
Different Page Sizes Scaled
Pages found in only one version still appear in the report.
Common Questions
Add the earlier version as Original Document and the newer one as Revised Document. Differences are highlighted right away.
Yes, pages without text, like scans, are compared visually, but changed images on text pages aren't marked.
Yes, pages are paired in order, and pages found in only one version are still shown.
Red marks removed text, green marks new text, and orange marks changed text.
Yes, both files are compared in your browser without uploading to a server.
PDF Guides and Tips
Why Does My PDF Signature Move After Saving?
Why does your PDF signature move after saving? Learn the causes, from an older download to form...
Why Won't My PDF Files Merge?
Why won't your PDF files merge? Spot locked, damaged, or non-PDF files and the 20-file, 200 MB, and...
How to Convert Documents to PDF by File Format
How to convert documents to PDF: pick the right tool for Word, Excel, PowerPoint, photos, text...
More UbahPDF Tools
Protect PDF
Add a password to secure a PDF.
Unlock PDF
Remove a PDF password you know.
Redact PDF
Black out sensitive information.
Flatten PDF
Make PDF form fields read-only.
Merge PDF
Join PDF files into one document.
Compress PDF
Make PDF smaller for email.
Edit PDF
Write on PDF and add images.
PDF to Word
Turn PDF into an editable DOCX file.
Split PDF
Split PDF pages into separate files.
Word to PDF
Save DOCX or DOC files as PDF.
Delete PDF Pages
Remove the pages you don't need.
JPG to PDF
Turn JPG photos into one PDF.