Text Case Converter
Extension Actions
- Extension status: Featured
- Live on Store
Converts text to letter cases including Uppercase, Lowercase, Title Case, Capitalized Case, Sentence Case, and Alternating Case.
Text Case Converter is a feature-rich Chrome extension 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
No Permissions Required: Text Case Converter works entirely within the extension popup and does not require access to your browsing data or web pages
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
Click the Text Case Converter icon in your browser toolbar
Type or paste your text into the input area
View live statistics (characters, words, whitespace) in the stats bar
Click any case conversion button to instantly transform your text
Click "Copy" to copy the converted text to your clipboard
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
Latest reviews
- Yaroslav Sibirskiy
- It is amazing! Thanks!
- Cedric S
- Great little extension. Helps me switch cases quickly without needing to go to a dedicated website. Would be even greater if it can keep the first letter of proper nouns capitalized. Thanks for developing this! :)
- mc wishatl
- Love this but is there any way to get a right click instead of the extension box? I think that would save even more time.
- Shakhawat Hossain
- Include the character and word count options in the same tool. It will be more popular, 100% sure. Follow this one: 'Counting Characters - #1 Letter & Word Count'
- Mohammad 25
- It's so good, Thanks!
- Limon
- very nice extension
- Manzi Boris
- Thanks! you saved us a lot of hours.
- Teagan Bok
- Great feature & super helpful! Thanks
- Teagan Bok
- Great feature & super helpful! Thanks
- Shlomo Zaga
- Simple & Easy to use! The creator is an amazing guy who listens to feedback. I am sure this super simple tool will get even better as time goes on & the founder received more feedback & ideas from his users!
- Shlomo Zaga
- Simple & Easy to use! The creator is an amazing guy who listens to feedback. I am sure this super simple tool will get even better as time goes on & the founder received more feedback & ideas from his users!