🔡 Text Case Converter

A lightweight, offline-capable Chrome extension that converts any text into 13 casing formats simultaneously.

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Features

• 13 output formats — camelCase, PascalCase, snake_case, SCREAMING_SNAKE, kebab-case, COBOL-CASE, dot.case, path/case, Title Case, Sentence case, lowercase, UPPERCASE, tOGGLE cASE
• Smart tokenizer — correctly splits camelCase, PascalCase, acronyms (e.g. XMLParser), and any separator-delimited string
• One-click copy per format with visual confirmation
• Dark / light mode toggle, persisted across sessions
• Respects OS theme on first launch
• Escape to clear keyboard shortcut
• 100% offline — no network requests, no external dependencies

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Screenshots

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Installation

From Source (Developer Mode)

1. Clone or download this repository
2. Open Chrome and navigate to chrome://extensions
3. Enable Developer mode (toggle in the top-right corner)
4. Click Load unpacked
5. Select the text-case-converter/ folder
6. The extension icon will appear in your toolbar

From the Chrome Web Store

Coming soon.

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Usage

1. Click the extension icon to open the popup
2. Type or paste any text into the input field
3. All 13 case formats update instantly
4. Click Copy on any card to copy that format to your clipboard
5. Press Escape to clear the input

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Supported Input Formats

The tokenizer intelligently handles any of these input styles:

Input	Words detected
hello world	hello, world
hello-world	hello, world
hello_world	hello, world
helloWorld	hello, world
HelloWorld	hello, world
XMLParser	xml, parser
hello.world/foo	hello, world, foo
HELLO WORLD	hello, world

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File Structure

text-case-converter/
├── manifest.json       # MV3 extension manifest (no permissions required)
├── popup.html          # Extension popup markup
├── popup.js            # All conversion logic, rendering, and theme handling
├── popup.css           # Styles with CSS custom properties for dark/light theming
├── icons/
│   ├── icon16.png
│   ├── icon32.png
│   ├── icon48.png
│   └── icon128.png
└── README.md

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Permissions

Permission	Required	Reason
storage	✅ Yes	Persists the dark/light theme preference across sessions via chrome.storage.local

No host permissions, no activeTab, no scripting. The extension never reads or modifies any web page.

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Development

No build step required. Edit the files directly and reload the extension at chrome://extensions using the ↺ reload button.

Adding a new case format

1. Open popup.js
2. Add a new entry to the CONVERSIONS array:

{
  id: 'myformat',        // unique string, used as data-id on the card
  label: 'myFormat',     // display label shown in the UI
  fn: words => words./* your transform here */
}

That's it — the card will appear automatically in the grid.

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Contributing

Pull requests are welcome! Please keep changes minimal and avoid adding dependencies.

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Support the Developer

If this extension saved you time, consider buying me a coffee ☕

Platform	Link
☕ Buy Me a Coffee	https://buymeacoffee.com/ejcenteno
💖 GitHub Sponsors	https://github.com/sponsors/ejcenteno
🍵 Ko-fi	https://ko-fi.com/ejcenteno
💸 PayPal	https://paypal.me/ejcenteno

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License

MIT — free to use, modify, and distribute.