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Advanced
Compare two PDFs and see what changed.
Got a revised contract or a new version of a report? Choose the old and the new PDF, and Pyrbit PDF shows every added and removed line of text.
Runs in your browser·Files are never uploaded·One free document every 24 hours with a Google account
How it works
Compare PDF in three steps.
Choose two PDFs
Select exactly two files: the old version first, then the new one.
Compare
The text of both is extracted and compared line by line.
Review the changes
Added lines are green, removed lines are red and struck through. Save the report as an HTML file to share.
What you can do
What Compare PDF does.
- Line-by-line text comparison
- Counts of added, removed and unchanged lines
- Colour-coded view of every change
- Downloadable HTML report
In the apps: The Pyrbit PDF apps add a side-by-side visual comparison of the rendered pages, metadata and byte-for-byte checks.
Private by design
Your PDF never leaves your device.
Compare PDF runs inside your browser tab. The file you choose is read from your device, processed there, and the result is saved back to your device — it is never uploaded to a Pyrbit server, so there is no copy to keep or delete.
Processed in your browser
The Pyrbit PDF engine runs on your computer or phone, not in the cloud.
No upload
Your document isn’t sent anywhere — not to us, and not to a third-party converter.
Sign-in is for your plan only
Your Google account keeps track of your free daily document and Pyrbit Pro. It never gives us your files.
Prefer offline?
The Pyrbit PDF apps do the same work on your phone, tablet or Mac — even without a connection.
Web or app
Use Compare PDFs in your browser, or in the free app.
Web browser
Works on any computer, tablet or phone with a modern browser. Sign in with a Google account to use the web app: one free document every 24 hours, with any tool. Pyrbit Pro (₹79/month or ₹599/year) gives unlimited use with no ads.
iPhone, iPad & Mac
Every tool, including Compare PDFs, with no file-size limit and offline use. Free on iPhone and iPad (with ads); the Mac app is paid.
Android & Chromebook
Every tool, including Compare PDFs, with no file-size limit and offline use. Free, supported by ads.
FAQ
Compare PDF questions.
Does it compare images and layout?
The web tool compares the text. Visual, page-by-page comparison is available in the Pyrbit PDF apps.
Can I compare scanned PDFs?
Scans have no text layer — run OCR PDF on both first.
Are my documents uploaded for comparison?
No. Both files are read and compared in your browser.
Is Compare PDF free?
On the web, sign in with a Google account and you can use Compare PDF — or any other tool — on one free document every 24 hours. Pyrbit Pro (₹79/month or ₹599/year) gives unlimited use with no ads. The Pyrbit PDF apps for iPhone, iPad and Android are free, supported by ads.
Ready when you are.
Open Compare PDFs in your browser — your file stays on your device.