Text Editing & Formatting

ROT13

Apply the reversible ROT13 letter cipher.

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What ROT13 does

Apply the reversible ROT13 letter cipher. It runs locally and handles the selected text without contacting a service.

CategoryText Editing & Formatting
Action typeJavaScript
Default resultReplace selected text by default
InternetNot required

Action and outcome

ROT13 example
ActionOutcome
ROT13Selected text: Hello, World!Uryyb, Jbeyq!

Use ROT13

Follow these steps to apply the reversible ROT13 letter cipher with ActionClip.

  1. Select the text you want to use.
  2. Choose ROT13 from ActionClip.
  3. In editable text, ActionClip replaces the selection immediately. In read-only text, it opens the result for review and copying.

Requirements and privacy

  • Before you start: No setup required.
  • Your selected text: Runs locally in ActionClip’s JavaScript sandbox. Selected text does not leave your Mac.

Action script

The script below is included so you can inspect how the action works before downloading it.

JavaScript definition
function run(selected_text) {
  return selected_text.replace(/[A-Za-z]/g, function (character) {
    var base = character <= "Z" ? 65 : 97;
    return String.fromCharCode(base + (character.charCodeAt(0) - base + 13) % 26);
  });
}