Compare PDF Documents
Find the text that was added, removed or changed between two versions of a PDF.
Original PDF
Modified PDF
The Best Free Online Compare PDF Tool
Need to compare two PDF files and find differences? With PDFAdore you can do it in a few clicks, right in your web browser. It works just as well for business, school and personal documents.
Why Use PDFAdore?
Secure & Private
Your file is processed on your own device, inside your browser. It is never uploaded to our servers, so nobody else can see it.
Fast & Easy
A simple, step-by-step interface lets you compare two pdf files and find differences in seconds, with no learning curve.
No Installation
Works in any modern browser on Windows, Mac, Linux, Android and iPhone. Nothing to download or install.
Completely Free
Use Compare PDF for free, with no watermarks and no sign-up. Premium raises the file size and batch limits.
When to Compare PDFs
- Verify contract revisions, agreement changes, or draft updates.
- Synchronized side-by-side view with color-coded diff markers.
- Exportable PDF comparison report with statistics per page.
- 100% private and computed within your browser.