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Text Encryptor / Decryptor

Encode and decode text using classic ciphers — Vigenère, ROT13, and Atbash. Runs entirely in your browser.

Vigenère cipher: Each letter is shifted by the corresponding letter of the key (A=0, B=1…Z=25), cycling through the key. Non-letter characters pass through unchanged.
  • 100% free — no account needed
  • Runs in your browser
  • Nothing is uploaded

Frequently asked questions

Is Text Encryptor / Decryptor really free?

Yes. Text Encryptor / Decryptor is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.

Does Text Encryptor / Decryptor upload my data?

No. Text Encryptor / Decryptor runs entirely inside your browser, so anything you type, paste, or open stays on your own device.

Do I need to sign up or install anything?

Neither. There is no account and nothing to download — open the page and Text Encryptor / Decryptor is ready to use on desktop or mobile.

Does Text Encryptor / Decryptor work offline?

Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.

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