Encoders & Decoders
ROT13
Apply ROT13 to rotate Latin letters by 13 positions. Encoding and decoding use the same operation—handy for spoiler tags and quick obfuscation.
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How to use
- Paste text
- Read the ROT13 output
- Apply ROT13 again to reverse
Next step
- Morse Code Encoder / Decoder
Convert letters, digits, and common punctuation to International Morse code or decode Morse back to text. Word breaks use / or |—runs in your browser.
- Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to UTF-8. Useful for data URLs, API payloads, and quick debugging—runs fully in your browser.
Frequently asked questions
Is ROT13 secure encryption?
No. ROT13 is a trivial reversible transform for obfuscation only—not suitable for protecting sensitive data.
Why encode and decode look the same?
ROT13 is self-inverse: applying it twice returns the original text, so one mode handles both directions.
Does my text leave the browser?
No. The cipher runs locally on your device.