Free tool
File Encryption
Encrypt a file with a passphrase before it goes anywhere — works with any cloud provider.
Encryption and decryption happen locally with the Web Crypto API — nothing is uploaded.
This is the same idea behind “encrypted at rest,” just something you can do yourself, to any file, before it touches any cloud provider — not just Purgify's. Your passphrase is stretched into an encryption key with PBKDF2 (600,000 iterations), and the file is encrypted with AES-256-GCM, which also authenticates it — a tampered or corrupted file will fail to decrypt rather than silently produce garbage.
Everything happens locally with your browser's Web Crypto API. The output is a single file containing everything needed to decrypt it later (except the passphrase, which only you know) — keep the passphrase somewhere safe, because there's no way to recover a file without it.
How to use it
- 01Choose Encrypt, drop in a file, and set a passphrase — the stronger, the better (check it with the password strength checker).
- 02Download the encrypted file and upload that anywhere you like.
- 03To get the original back, choose Decrypt, drop in the encrypted file, and enter the same passphrase.
Frequently asked questions
Is this a replacement for a password manager or vault?
No — it's for encrypting individual files before they leave your device, not for storing and organizing secrets long-term. Use a password manager for that.
What happens if I forget the passphrase?
The file is unrecoverable. There's no backdoor, no “forgot passphrase” link — that's the point of real encryption. Store the passphrase somewhere safe, like a password manager.
Why PBKDF2 and not Argon2?
Argon2 is generally considered stronger against specialized cracking hardware, but it isn't available in the browser's native Web Crypto API, and this tool avoids external cryptography libraries by design. PBKDF2 at 600,000 iterations (the current OWASP-recommended minimum) is still a solid, widely trusted choice.
Related tools
This is what Purgify automates.
Connect your cloud accounts and Purgify finds duplicates and reclaimable space like this — across all of them, on a schedule.
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