Compare PDF
See what changed between two versions of a document.
About Compare PDF
Compare PDF takes two versions of a document and shows the differences in text and pages. Upload the original and the changed version, and see what was added, removed or moved.
It saves you from reading two long documents side by side.
When to use Compare PDF
- Check what changed between two drafts of a contract.
- Review edits to a report before approving it.
- Confirm that two copies of a document are the same.
Tips for the best result
- Upload the older file as the original and the newer one as the changed version.
- Comparison is based on text, so scans need OCR PDF first.
How to use Compare PDF online
- 1
Upload your files
Choose up to 2 PDF files or drag and drop them onto the page.
- 2
Choose your options
Adjust the settings if you need to, or keep the sensible defaults.
- 3
Run Compare PDF
Click the button and the file is processed on our secure server in seconds.
- 4
Download the result
Download your new file. Your upload and the result are deleted automatically afterwards.
Frequently asked questions
Does it compare pictures too?
The comparison focuses on text and page differences. Changes that only affect images or layout may not be reported.
Is Compare PDF free?
Yes. You can use Compare PDF on SnapPDF for free, without creating an account. Paid plans only raise the limits for heavy use.
How do I use Compare PDF?
1. Upload your files. 2. Choose your options. 3. Run Compare PDF. 4. Download the result.
Are my files safe?
Yes. Files are sent over HTTPS, stored encrypted, visible only to you, and deleted automatically after processing. We never sell your files or use them to train AI.
Do I need to install any software?
No. Compare PDF works in any modern browser on Windows, Mac, Linux, Android and iPhone.
Which file types are supported?
Compare PDF accepts PDF files, up to 2 at a time.
What else can I do with SnapPDF?
SnapPDF has more pdf security tools and many others to merge, split, compress, convert, edit and secure PDFs.