---
title: "ROT13 action for ActionClip"
canonical_url: "https://actionclip.app/actions/rot13"
document_type: "standalone_action"
official: true
action_count: 1
catalog_schema_version: 1
catalog_revision: "2026-09-04.1"
catalog_published_at: "2026-09-04T10:30:00Z"
---

# ROT13 action for ActionClip

Apply the reversible ROT13 letter cipher.

## What it does

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

## Action details

| Field | Value |
| --- | --- |
| Category | Text Editing & Formatting |
| Action type | JavaScript |
| Default result | Replace selected text by default |
| Internet | Not required |

## Action and outcome

| Action | Outcome |
| --- | --- |
| **ROT13** — Selected text: Hello, World! | Uryyb, Jbeyq! |

## How 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

No setup required.

## Privacy

Runs locally in ActionClip’s JavaScript sandbox. Selected text does not leave your Mac.

## Action script

````javascript
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);
  });
}
````

## Links

- [HTML listing](https://actionclip.app/actions/rot13)
- [Download action definition](https://actionclip.app/actions/rot13.actionclip)
- [Browse Text Editing & Formatting actions](https://actionclip.app/marketplace#marketplace-textTools)
- [All Marketplace listings](https://actionclip.app/marketplace)