Compare two PDFs for free 13 uses
See every added and removed line of text between two PDF documents.
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Tell us what you think about Compare two PDFs for free.
Drop the original PDF
Drop the changed PDF
Comparison is based on each PDF's extracted text, so identical text with different fonts, colors, or images will show as unchanged.
- Runs entirely in your browser — nothing is uploaded
- Highlights every added and removed line of text
- Free, no account required
How it works
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1
Upload the PDF (or two PDFs, to compare).
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2
Review the details or differences shown on screen.
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3
Export or copy the results if you need them elsewhere.
Why use this tool
Every PDF task, one place
Merge, split, compress, convert, sign, and more — no need to juggle separate apps for each job.
Private by default
Most tools process your file entirely in the browser — it's never uploaded. When a conversion needs the server, the file is deleted within the hour.
Works on any device
Runs in the browser on Windows, Mac, Linux, iOS, and Android — nothing to install, nothing to trust but the tab.
Fast by design
No queues and no desktop app to wait on — most jobs finish in a few seconds, right where you are.
Convert to and from any format
Move between PDF, Word, Excel, PowerPoint, images, and HTML — output stays true to your original formatting.
Free, always
Every tool here is free to use, with no watermarks, page limits, or forced trial period.
Frequently asked questions
The comparison engine strictly analyzes the extracted text content, ignoring font changes, colors, or image shifts.
Additions, deletions, and modifications are highlighted using standard red and green color coding for easy identification.
Table comparison can be tricky if the underlying reading order changes, but text edits within cells are generally detected.
No, the tool compares the continuous text streams, so it can handle heavy insertions or deletions spanning multiple pages.
Yes, the diff processing occurs locally within your browser, ensuring sensitive contract data is never transmitted.
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5 PDF Mistakes That Silently Kill Your Documents (and How to Fix Them)
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