EN
ENARDEESFAFRHEHIIDITJAKONLPLPT-BRRORUTHTLTRUKVIZH

General dev

ROT13 / Caesar Cipher

Runs locally

Use ROT13 / Caesar Cipher

What it does

Shift every Latin letter by 13 or any other amount; the output updates as you type. ROT13 (PHP's str_rot13) is a common layer in obfuscated phishing-kit and web-shell code, and uggcf:// is its giveaway for https://.

It runs entirely in your browser: nothing you enter is uploaded.

Example

ROT13-hidden link

Input
uggcf://ybtva.rknzcyr.pbz/irevsl
Output (captured 2026-10-20)
https://login.example.com/verify

With the default shift of 13 the output is https://login.example.com/verify.

FAQ

What exactly is shifted?

Only the Latin letters A–Z and a–z, each moved forward by the shift with wrap-around and its case kept. Digits, punctuation, accented and non-Latin letters stay as they are.

How do I decode a Caesar shift other than 13?

Use 26 minus the shift (text shifted by 3 decodes with 23) or enter a negative value such as -3. ROT13 is its own inverse; neither is encryption, just a letter substitution anyone can undo.

Is the text sent anywhere?

No. The shift is applied in your browser as you type.

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