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Toolorio

Text & File Encryption

Encrypt text or any file with a password using AES-256 — and decrypt it again later. Everything happens in your browser; nothing is uploaded.

AES-256-GCM with a key derived via PBKDF2 (210,000 iterations). Everything runs in your browser — if you lose the password, the data cannot be recovered.

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Your files are processed locally in your browser. They are not uploaded to our servers.

How to use

  1. Choose text or file mode, and encrypt or decrypt.
  2. Enter a strong password — you'll need exactly this password to decrypt.
  3. Run the operation and copy the result or download the encrypted/decrypted file.

What is this tool?

Text & File Encryption uses your browser's built-in Web Crypto engine with AES-256-GCM, the same encryption standard used by banks and messengers. Your password is strengthened into a key via PBKDF2 with 210,000 iterations, and each encryption uses a fresh random salt and nonce. Because everything runs locally, there is no account, no server and no backdoor — and also no recovery if you lose the password.

Common uses

  • Encrypting a file before uploading it to cloud storage
  • Sending sensitive text through an insecure channel (share the password separately)
  • Protecting a document on a shared computer or USB stick
  • Storing recovery codes or notes in encrypted form

FAQ

What happens if I forget the password?

The data is unrecoverable — by design. There is no backdoor, no reset and no one who could help, because the encryption happens only on your device.

Which encryption is used exactly?

AES-256 in GCM mode (authenticated encryption), with the key derived from your password via PBKDF2-SHA-256 with 210,000 iterations and a random salt.

Can the other person decrypt without this tool?

The output uses a simple salt+IV+ciphertext layout that any AES-GCM implementation can read, but the easiest way is to open this page and use decrypt mode.

Is there a file size limit?

No hard limit, but very large files (hundreds of MB) may be slow or memory-hungry since everything runs in the browser.