Add a password. Keep it secret.
Entirely on-device.
Drop your PDF here
or tap to browse · max 200 MB
—
— · tap to change
Shhh…
Passwords don't match. We checked twice.
— · Never left your device
Need to lock hundreds of PDFs? The offline bundle handles batch encryption with no size limit. $99 once.
Get Bundle →Most online PDF lockers upload your document to a remote server, encrypt it there, and send it back. Your file — and your password — pass through systems you don't control.
fwip works differently. The encryption engine runs entirely in your browser. Your PDF is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.
Everything runs on your device using WebAssembly. Your file never touches a network.
Drop a file. Get a result. No sign-up, no email, no password.
Free in the browser. $99 once for the offline bundle. That's it. Forever.
The desktop version works with no internet connection at all.
| fwip | Smallpdf | Adobe Acrobat | iLovePDF | |
|---|---|---|---|---|
| Upload required | No | Yes | Yes | Yes |
| Account required | No | Yes | Yes | Free tier |
| Price | $15 / tool | $108/yr | $240/yr | $84/yr |
| Files leave device | Never | Always | Always | Always |
| Works offline | Yes | No | Desktop app | No |
| Batch processing | Offline bundle | Paid only | Yes | Paid only |