Visually compare two PDF files side-by-side to spot differences.
Click to Upload
Click to Upload
Select the original PDF on the left and the modified/new PDF on the right.
Click "Start Comparison". Both files will open side-by-side. Scrolling one will automatically scroll the other for easy spotting of changes.
When you scroll one document, the other moves automatically, keeping both pages perfectly aligned.
Easily spot text changes, layout shifts, or image updates by viewing documents side-by-side.
Comparison happens in your browser. Your sensitive files are never uploaded to our servers.
Yes, Compare PDF is completely free to use with no limits on file size or usage frequency.
No. We use client-side technology (JavaScript) to render PDFs. Your files stay on your device and are never stored on our database.
Yes! On mobile devices, the tool switches to a vertical view so you can compare pages by scrolling up and down.