Compare PDF
See the text differences between two PDF versions side by side.
Runs on your device · no upload
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About Compare PDF
Compare PDF reads the text of two PDF files and shows what was removed and what was added, side by side. It is useful for contracts, reports and any document that changed between versions. Both files stay on your device.
Add your PDF
Choose a file from your phone or computer. It never leaves your device.
Adjust and run
Pick your options, then tap the main button.
Download
Save the result. No watermark, no sign-up.
Frequently asked questions
What is compared?
The text of the two PDFs, line by line. Images, layout and fonts are not compared.
Can it compare scanned PDFs?
Only if they contain selectable text. Run scans through PDF OCR first.
Is there a size limit?
Very long documents may be too big to compare line by line. Try fewer pages.
Are my files uploaded anywhere?
No. This tool runs in your browser, so your file stays on your device and is never sent to a server.