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Encrypt & DecryptNothing uploadedNo sign-upNo watermark

Encrypt Anything With A Password

Lock a file or a message with AES-256 before you send it. The password and the data never leave your browser.

  1. 1Choose a file or type a message
  2. 2Set a password
  3. 3Download the encrypted result

Drag & drop your file

or click to browse

Any file — nothing is uploaded

Encryption You Do Not Have To Take On Trust

An encryption tool that runs on a server has already seen your file and your password. ModiFyX uses the browser's own Web Crypto API, so neither is ever transmitted.

The Key Never LeavesEncryption happens in your browser with the Web Crypto API. Neither the file nor the password is transmitted.
AES-256-GCMThe same authenticated cipher used for HTTPS. Tampering is detected, not just decryption failure.
PBKDF2 Key Stretching310,000 iterations, so a short password is far more expensive to attack than the password alone suggests.
Files Or TextEncrypt a document before emailing it, or a block of text to paste into a message.
No Account NeededNo key escrow, no recovery, no sign-up. If you lose the password the data is gone — that is the point.
Works OfflineNothing to download and no service behind it.
💎 Support Developer — Keep Tools Free

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Blur & Redact ImageBlur, pixelate or black out faces and personal data. The pixels are destroyed, not covered.Password GeneratorStrong random passwords from the browser's cryptographic source. Never transmitted.File ChecksumGenerate and verify SHA checksums for any file without uploading it anywhere.
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