Side-by-side comparison of two popular free online tools
Free online tool. No signup required. Process files directly in your browser with AI assistance.
Try Unlock
Free online tool. No signup required. Process files directly in your browser with AI assistance.
Try Flatten| Feature | Unlock PDF | Flatten PDF Form |
|---|---|---|
| Free to Use | ✓ Yes | ✓ Yes |
| No Signup Required | ✓ Yes | ✓ Yes |
| Browser-Based | ✓ Yes | ✓ Yes |
| AI-Powered | ✓ Yes | ✓ Yes |
| Mobile Friendly | ✓ Yes | ✓ Yes |
| Privacy First | ✓ Yes | ✓ Yes |
| Auto-Delete Files | ✓ 60 min | ✓ 60 min |
Unlock PDF is ideal when you need to quickly process your files online. It's completely free, requires no account creation, and works directly in your browser. Your files are processed locally for maximum privacy.
Flatten PDF Form is perfect for users who need a different approach to file processing. Like all tools on pdf0.ai, it's free, private, and requires no downloads or installations.