Lightning fast
Runs in your browser using WebAssembly — no waiting rooms.
Security & Forms
Compare PDF
Spot differences between two PDF documents instantly.
- Free forever, no signup
- Runs in your browser — private by design
- Works on every device and browser
Drop PDF A (original)
Click or drop a PDF here
Drop PDF B (revised)
Click or drop a PDF here
Why use Pdfly's Compare PDF?
Built with the same craft as a native app — in a browser tab.
Private & secure
Files never leave your device for most operations.
No signup
Use every tool anonymously with zero data collection.
Beautifully simple
A distraction-free workspace built for focus.
How to compare pdf in 3 steps
Simple, fast, and totally free.
- 1Step 1
Upload your files
Drag and drop into the Compare PDF dropzone above, or click to browse from your device.
- 2Step 2
Adjust the options
Reorder, choose ranges, quality or formats depending on the tool. Sensible defaults are set for you.
- 3Step 3
Download in seconds
Click the primary action button. Your new file is ready to download instantly.
Compare PDF — FAQ
Answers to the questions people ask most about Compare PDF.
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