Is Compare PDFs free?

Yes. The comparison runs entirely in your browser - no daily limit.

Are my files uploaded?

No. Both PDFs stay on your device throughout the diff.

Pages without a counterpart are flagged as added or removed in the report.

Pixel comparison. It catches every visual difference but cannot tell you what text changed - use a proper text-diff tool for that.

Both PDFs together should fit in roughly 100 MB for reliable browser performance.

Drop files

Drag your PDFs here

or click to browse

Place two PDFs side by side and mark the pages that differ. Useful for legal review, contract diffs, and design revisions. Runs in your browser.

How it works

1
Add Two PDFs
Drag the original and the new version - first file is treated as the baseline.
2
Click Compare
We render every page in your browser and pixel-diff them.
3
See The Differences
Pages that changed are flagged with a percentage difference.
4
Download The Report
Save a side-by-side diff PDF for review.

Your files are safe

256-bit TLS
Every upload travels over modern TLS. Files at rest are encrypted with AES-256.
Deleted in 24h
Uploaded files and outputs auto-delete from S3 within a day of your job.
Browser-first
Most tools run on your device. Cloud tools are clearly labelled, never silent.
No watermarks
Outputs are pristine PDFs. Free tier, no signup, no branding on your files.

FAQ

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