Compare PDFs
Side-by-side page comparison plus word-level similarity scoring between two PDF versions — processed privately on your device.
Compare two versions of a document side by side, page by page, and see a word-level similarity score that summarizes how much changed at a glance. Built for checking that the 'final' contract really matches the draft, spotting edits between revisions of a report, or verifying which version of a document differs — all processed privately on your device.
How to use Compare PDFs
- Upload the first version of the document.
- Upload the second version you want to compare it against.
- Browse the pages side by side and read the similarity score for each pair.
- Work through any pages that score lower to locate the exact differences.
Frequently asked questions
What does the similarity score mean?
It reflects how many words the two pages share, expressed as a percentage: 100% means identical wording, while lower scores flag pages where text was added, removed or rewritten — a quick filter for finding the pages worth looking at closely.
How are the pages matched up?
Pages are lined up side by side for comparison, so you can scan the two versions together while the score tells you where the wording diverged. Differences show at the word level within each compared pair.
Are my documents uploaded for comparison?
No — both files are parsed and compared on your device, and the similarity calculations run locally. Contract revisions and confidential reports never leave the browser they are opened in, which is precisely when you want a comparison tool you can trust.
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