Compare PDF

Load the original and the revised PDF to see added, removed and changed text page by page.

About this tool

Compare PDF — See Every Change Between Two Contract Versions

Load the original and the revised PDF and see added, removed and changed text page by page. Everything runs locally in your browser — no upload, no sign-up, no watermark and no file size limit.

Word-Level Differences

Insertions are marked green, deletions red, so a changed clause, amount or date stands out immediately.

Contracts Stay Private

Both files are read with pdf.js inside your browser tab, so confidential agreements never reach a server.

Scans Supported via OCR

If a PDF has no text layer, Toolula points you to local OCR so scanned contracts can be compared too.

Frequently asked questions

Are my contracts uploaded to a server?

No. Toolula processes the document inside your browser tab with pdf-lib and WebAssembly, so the file never leaves your device.

Can it compare scanned PDFs?

Scans contain images, not text. Run them through Toolula OCR first, then compare the recognized text.

Is it really free?

Yes. Every Toolula PDF tool is free with no account, no trial and no daily limit — there is no server cost to pass on because your own device does the work.