What kind of differences does it detect?

It highlights text that was added, removed or changed between the two PDF versions you upload.

Can it compare PDFs with different page counts?

Yes, it compares page by page and flags pages that only exist in one version.

Does it detect formatting changes, not just text?

It focuses on text content differences; purely visual formatting changes without text changes aren't flagged.

Does Compare PDF upload my files to a server?

No. Compare PDF runs entirely in your browser using on-device processing, your files never leave your device.

Compare PDF

Spot text differences between two versions of a PDF.

Runs in your browser

Original PDF

Drop a PDF

Choose File

Changed PDF

Drop a PDF

Choose File

Compares extracted text only, not visual layout. Runs entirely in your browser.

About this tool

Spotting exactly what text changed between two versions of a PDF — a contract revision, an updated report — by eye is slow and unreliable, especially in a longer document. This tool spots text differences between two versions of a PDF, showing you exactly what changed instead of a manual side-by-side read-through.

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