Is Compare PDFs free to use?

Yes — completely free, with no sign-up and no watermark on the output.

Compare PDFs

Highlight differences between two documents. Free online — no sign-up, no watermark.

FreeNo sign-up No watermark

Power-user tools for the jobs other PDF apps skip: OCR, comparison, batch processing, form automation, reflow, invoice parsing and accessibility fixes for scanned or complex documents.

Accepts .pdf files. This tool uses secure in-memory processing on our server — files are never stored.

How to use Compare PDFs

Upload your file — drag and drop it onto the page or click to browse.
Adjust the tool's options if needed, then run it.
Download the finished file straight to your device.

Frequently asked questions

Is Compare PDFs free to use?: Yes — completely free, with no sign-up and no watermark on the output.
Is my file safe?: This tool uses secure in-memory processing on our server — files are never stored.
What files does Compare PDFs accept?: Accepts .pdf files.

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