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Compare Two PDFs and See Exactly What Changed

Upload two versions of a document and instantly see what text was added or removed between them, a fast way to spot changes in a contract revision or policy update without reading every line yourself.

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Why manual proofreading misses things

Reading two long documents side by side to catch every wording change is slow and genuinely error-prone. Small edits, a changed number, a deleted clause, are easy to overlook when scanning rather than systematically checking. An automated diff removes that risk.

A typical use case

A vendor sends back a redlined contract, or a policy document gets revised for the third time. Rather than reading both versions end to end, upload both here and see exactly what moved.

How to Use This Tool

Tips for the Best Results

Frequently Asked Questions

Does it highlight formatting changes too, like font or color?

The comparison is text-based, focused on added or removed content, not visual formatting differences.

Can I compare more than two versions at once?

Two files per run. For a chain of revisions, compare them in pairs.

What counts as a line in the comparison?

Text grouped by its visual row position on the page, matching how it naturally reads.

Is this reliable for spotting contract redlines?

It's a strong first pass for catching wording changes fast, but for high-stakes legal review, have a person confirm the flagged differences too.

What exactly counts as a change?

The tool compares text line by line between the two documents, flagging any line that was added, removed, or altered between versions.

Can I compare scanned PDFs?

Only if they contain actual text — run both through OCR PDF first if they're purely scanned images with no text layer.

Does it show changes within a single line, or only whole-line differences?

Comparisons are made at the line level — a line with even a small change will be shown as one line removed and one line added, rather than highlighting just the specific words that changed.

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