Private File Encryption

Lock any file.

AES-256 encryption. On your device.

Drop any file to encrypt

AES-256-GCM · PBKDF2 100,000 iterations · On-device
No upload
Encryption in your browser
Files never leave your device

Need to encrypt many files? The offline bundle handles batch encryption without internet. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Drop
Drop any file into fwip. It stays on your device.
02
Set password
Choose a strong password. This is the only key that can decrypt your file.
03
Encrypt
Your file is encrypted with AES-256 locally in your browser. Download the encrypted file.
// Why this is different

Your file never leaves your device.

Most file encryption tools upload your file to a server, encrypt it there, and send it back. That means your unencrypted file passes through someone else's infrastructure. fwip encrypts entirely in your browser using AES-256. Your file stays on your machine the entire time.

fwip works differently. The processing engine runs entirely in your browser. Your file 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.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

Use it free in your browser. Own it offline for $15. No subscription. Your files. Your encryption. Your device.
// How fwip compares

fwip vs the rest.

fwipHat.shAxCryptBoxcryptor
Upload requiredNoNoNo (desktop)No (desktop)
Account requiredNoNoYesYes
Price$15 / toolFree (open source)Free / $3.75/mo ($45/yr)Free / $4/mo ($48/yr)
Files leave deviceNeverNoCloud key syncCloud integration
Works offlineYesSelf-hostedYes (desktop)Yes (desktop)
Batch processingOffline bundleNoYesYes
// Questions

Frequently asked.

How do I encrypt a file without uploading it?▾
Drop your file into fwip, set a password, and click Encrypt. The encryption runs entirely in your browser using AES-256. Your file never leaves your device.
What encryption algorithm does fwip use?▾
AES-256 — the Advanced Encryption Standard with a 256-bit key. It's the same standard used by governments, banks, and security professionals worldwide.
Can I decrypt the file later?▾
Yes. Drop the encrypted file into fwip, enter the same password, and click Decrypt. The original file is restored.
What happens if I forget the password?▾
The file cannot be recovered without the password. fwip has no server, no account, and no recovery mechanism. This is by design — only you can access your encrypted files.
What file types can I encrypt?▾
Any file. Documents, images, videos, archives, databases — fwip encrypts the raw file data regardless of type.
Is browser-based encryption secure?▾
Yes. fwip uses the Web Crypto API built into your browser, which provides the same cryptographic primitives used for HTTPS connections. The encryption is real AES-256, not a toy cipher.
// Related tools

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Offline. No browser. No internet. No excuses.
$15
This tool
  • File Encrypt · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
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Complete suite
  • All 200+ tools · offline
  • No file size limit
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One-time payment · 3 devices · Updates included · Mac + Windows + Linux