Compare PDF Files
Side-by-side visual diff of two PDFs page by page. Pro feature.
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How to use Compare PDF Files
- Upload two versions of a PDF — the original and the revised copy.
- The tool highlights text that was added, removed, or changed between the two.
- Review the diff to spot contract changes, redline edits, or accidental alterations without reading both documents side by side manually.
Limitations
- Works on the text layer — differences that are purely visual (e.g., a re-flowed layout with identical wording) may show as changed even when the meaning is the same.
About this tool
Compare PDF Files is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: PDF & Document Tools. Browse more PDF & Document Tools tools.