🔍 Compare Two PDF Files
Visualize differences between two PDFs side by side or in overlay mode. 100% browser-based.
100% browser-based — no file uploaded.
📄
PDF A
📄
PDF B
You use this tool often? Pro includes files up to 500 MB and priority processing.
What is Compare Two PDFs?
The PDF comparison tool displays two documents side by side page by page, with an overlay mode to visually identify differences between versions.
How to use this tool?
Import two PDFs, navigate page by page to compare them side by side. Enable overlay mode to see differences in transparency.
Benefits
- Visual page-by-page comparison
- Overlay mode
- 100% browser-based
- No page limit
Frequently Asked Questions
- How does the comparison work?
- Both PDFs are rendered page by page as images via pdf.js, then displayed side by side. An overlay mode lets you visually detect differences.
- Are my files private?
- Yes, processing is 100% local in your browser. No files are sent to any server.
- Is there a page limit?
- No, but very large PDFs may slow down rendering in the browser.
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Use →What is Compare Two PDFs?
The PDF comparison tool displays two documents side by side page by page, with an overlay mode to visually identify differences between versions.
How to use this tool?
Import two PDFs, navigate page by page to compare them side by side. Enable overlay mode to see differences in transparency.
Benefits
- Visual page-by-page comparison
- Overlay mode
- 100% browser-based
- No page limit
Frequently Asked Questions
- How does the comparison work?
- Both PDFs are rendered page by page as images via pdf.js, then displayed side by side. An overlay mode lets you visually detect differences.
- Are my files private?
- Yes, processing is 100% local in your browser. No files are sent to any server.
- Is there a page limit?
- No, but very large PDFs may slow down rendering in the browser.
Similar Tools
Text Diff
Compare two texts and visualize differences line by line. Additions, deletions, modifications. Free.
Use →Image Compare
Compare two images side-by-side with a before/after slider. Ideal for checking compression or edits. Free.
Use →Merge PDFs
Combine multiple PDF files into a single document online. Drag and drop, reorder, and download the merged PDF. Free.
Use →