Compare PDF
Compare two PDF files side by side
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The tool loads in your browser — your files stay on your device.
Files are processed locally and never uploaded.
How to Compare PDF
Upload
Select or drag your file into the tool above.
Adjust
Choose the options you need for the job.
Download
Process runs instantly and your file downloads.
About Compare PDF
Compare two PDF documents side by side to quickly identify differences between versions. Upload both files and our tool displays them page by page for easy visual comparison. Perfect for reviewing contract revisions, checking document updates, verifying edited versions, and ensuring document accuracy across different file versions.
Frequently asked questions
Yes. Compare PDF is 100% free with no hidden costs, no watermarks, and no daily limits. You can use it as many times as you like without creating an account.
Absolutely. Compare PDF processes your files directly in your browser — they are never uploaded to a server. Your documents never leave your device, which makes the tool completely private and secure.
No. Compare PDF works instantly in any modern web browser on Windows, macOS, Linux, Android, and iOS. There is nothing to install and no registration required.
Upload your file, choose any options the tool offers, and click the action button. Compare PDF processes everything instantly in your browser and lets you download the result right away.
There is no fixed size limit. Because compare pdf runs on your device, the practical limit depends on your computer's available memory rather than a server quota.