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Compare PDF - Find Differences Between PDF Files | CarePDF
Compare two PDF files and find differences. Free online tool with text comparison, visual side-by-side, and overlay modes. Get a downloadable comparison report.
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How to Compare PDFs
1. Upload 2 PDFs
Select the original and modified PDF files.
2. Choose mode
Text report, side-by-side, or overlay blend.
3. Download result
Get one PDF with the comparison.
Features
Text Comparison
Compare text content page by page and see exactly what changed.
Side-by-Side View
See both PDFs displayed next to each other in one document.
Overlay Mode
Blend both pages together to instantly spot visual differences.
PDF Report
Download a single PDF with all differences highlighted.
Fast Processing
Compare documents in seconds.
100% Secure
Files are encrypted and deleted within 1 hour.
Frequently Asked Questions
What differences are detected?
Text mode detects changed, added, or deleted text on each page. Visual and overlay modes show pixel-level differences in layout and images.
Do both PDFs need the same number of pages?
No, we compare up to the maximum page count found. Missing pages in one document are treated as blank.
What is overlay mode?
Overlay blends both pages together with different colors, making differences immediately visible at a glance.
Can I compare scanned documents?
For text comparison of scanned documents, first use our OCR tool to make the text searchable.
What format is the comparison report?
You receive a single PDF file containing the comparison results that you can download and share.
Is PDF comparison free?
Yes, completely free with no hidden costs or registration required.
Are my files secure?
Absolutely. 256-bit SSL encryption and automatic deletion within 1 hour.
How large can the PDFs be?
Each file can be up to 50MB, with a combined total of 100MB for both files.