Text Case Converter EN

Text Case Converter is a feature-rich Firefox add-on that allows you to effortlessly change the case of any text with just one click. Whether you're formatting headlines, writing code, crafting social media posts, or editing documents, this tool makes text transformation quick and simple.

KEY FEATURES

Live Text Statistics
Get real-time insights into your text as you type or paste. The statistics bar displays character count (with and without spaces), total word count, and whitespace count, helping you stay within character limits for social media, SEO meta descriptions, or any other requirements.

Six Powerful Case Conversion Options

• Lower Case Converter
Converts all letters to lowercase. Ideal for casual writing, coding variable names, or when you accidentally typed with CAPS LOCK on.
Example: "HELLO WORLD" → "hello world"

• Upper Case Converter
Transforms all letters to uppercase. Perfect for headlines, acronyms, emphasizing important text, or creating attention-grabbing titles.
Example: "hello world" → "HELLO WORLD"

• Capitalized Case Converter
Capitalizes the first letter of every word. Useful for names, titles, and headings where you want consistent capitalization throughout.
Example: "hello world" → "Hello World"

• Title Case Converter
Intelligently capitalizes text following standard title capitalization rules. The first letter of major words is capitalized, while minor words like articles, prepositions, and conjunctions remain lowercase (except when they appear at the beginning). You can customize the list of exception words to match your preferred style guide, whether it's AP, Chicago, MLA, or your own custom rules.
Example: "the house on the haunted hill" → "The House on the Haunted Hill"

• Sentence Case Converter
Capitalizes the first letter of each sentence while keeping the rest in lowercase. This is the standard format for most written English, making it perfect for cleaning up poorly formatted text or converting uppercase text to readable paragraphs.
Example: "HELLO WORLD. HOW ARE YOU?" → "Hello world. How are you?"

• Alternating Case Converter
Alternates between lowercase and uppercase letters, creating the popular "spongebob case" or "mocking text" style. Great for memes, social media, or adding a playful tone to your text.
Example: "hello world" → "hElLo WoRlD"

Customizable Title Case Exceptions
Take full control of your Title Case conversions with the built-in exceptions editor. Add or remove words that should remain lowercase, such as articles (a, an, the), conjunctions (and, but, or), and prepositions (in, on, at, by, for). Your custom exception list is automatically saved and persists across browser sessions.

Default exceptions include: a, an, and, as, at, but, by, for, in, nor, of, on, or, so, the, to, up, yet, is, are, was, were, and more.

Modern, User-Friendly Interface
Enjoy a clean, modern design with intuitive controls, smooth animations, and visual feedback. The streamlined layout puts all conversion options at your fingertips while displaying helpful text statistics at a glance.

ADDITIONAL FEATURES

• One-Click Copy: Instantly copy your converted text to the clipboard with visual confirmation
• Clear Button: Quickly clear the text area to start fresh
• Keyboard Shortcuts: Power users can use Ctrl+L (lowercase), Ctrl+U (uppercase), and Ctrl+T (title case) for faster workflow
• Persistent Settings: Your Title Case exception preferences are saved automatically
• Privacy Focused: Text Case Converter works entirely within the add-on popup and does not collect or transmit any data

PERFECT FOR

• Writers and editors formatting articles, blog posts, and manuscripts
• Marketers creating headlines, ad copy, and social media content
• Developers formatting code comments, documentation, and variable names
• Students and researchers formatting citations and paper titles
• SEO professionals optimizing meta titles and descriptions
• Anyone who needs to quickly reformat text

HOW TO USE

1. Click the Text Case Converter icon in your Firefox toolbar
2. Type or paste your text into the input area
3. View live statistics (characters, words, whitespace) in the stats bar
4. Click any case conversion button to instantly transform your text
5. Click "Copy" to copy the converted text to your clipboard
6. Optionally, expand "Title Case Exceptions" to customize which words stay lowercase

Text Case Converter is lightweight, fast, and designed to save you time. No more manually retyping text or searching for online converters. Transform your text instantly, right from your browser.

WHAT'S NEW IN VERSION 2.0

• Brand new modern interface with improved usability
• Live text statistics (characters, words, whitespace counts)
• Customizable Title Case exceptions with persistent storage
• Clear button for quick text reset
• Keyboard shortcuts for faster workflow
• Improved Alternating Case (now alternates only letters, ignoring spaces)
• Enhanced copy functionality with visual feedback
• Smoother animations and hover effects

Created by Alston Antony

PRIVACY

This add-on respects your privacy. All text processing happens locally in your browser. No data is collected, stored externally, or transmitted to any servers. The only data stored is your custom Title Case exception list, which is saved locally in your browser.