---
title: "Capitalize Words action for ActionClip"
canonical_url: "https://actionclip.app/actions/capitalize-words"
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"
---

# Capitalize Words action for ActionClip

Start each selected word with a capital letter.

## What it does

Start each selected word with a capital letter. 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 |
| --- | --- |
| **Capitalize Words** — Selected text: NICK'S best dog’s FUR | Nick's Best Dog’s Fur |

## How to start each selected word with a capital letter with ActionClip

1. Select the text you want to use.
2. Choose **Capitalize Words** 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(/(\p{L}+[\u0027\u2019]\p{L}+|\p{L}+)/gu, function (word) {
    var lower = word.toLocaleLowerCase();
    return lower.slice(0, 1).toLocaleUpperCase() + lower.slice(1);
  });
}
````

## Links

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