Text Case Converter

Title Case capitalises the first letter of every significant word (articles like 'a', 'the', 'and' stay lowercase unless they open the title). It is used for book titles, article headings, and movie names. Sentence case only capitalises the very first word of a sentence — the same way you'd write a regular sentence. It is the standard for UI labels, descriptions, and conversational text.

camelCase (e.g. getUserData) is the JavaScript convention for variable names, function names, and object properties. PascalCase (e.g. UserProfile) is used for class names, React component names, and TypeScript types/interfaces. Both strip spaces and punctuation, so 'user profile data' becomes 'userProfileData' in camelCase and 'UserProfileData' in PascalCase.

snake_case separates words with underscores and uses all lowercase (e.g. first_name, created_at). It is the convention in Python for variable and function names, SQL for column names, and many configuration files. CONSTANT_CASE is the same pattern but in all capitals — used for environment variables and constants that should never change.

kebab-case separates words with hyphens and uses all lowercase (e.g. my-component, about-us). It is the standard for HTML attributes, CSS class names, URL slugs, and file names in most front-end projects. It cannot be used as a JavaScript variable name since the hyphen is parsed as the minus operator.

The utility buttons transform your source input text directly. 'Remove Extra Spaces' collapses multiple consecutive spaces into one and trims leading/trailing whitespace. 'Remove Line Breaks' replaces all newline characters with a single space. 'Reverse Text' flips every character. 'Sort Lines A → Z' alphabetically sorts every line. 'Remove Duplicates' removes repeated lines, keeping the first occurrence of each.

No. All transformations run entirely in your browser using JavaScript. Nothing is sent to any server and nothing is saved anywhere. Your text exists only in the current browser tab and is gone the moment you close or refresh the page.

Uppercase and lowercase transformations work for any language that has upper/lower distinctions, as JavaScript's toUpperCase() and toLowerCase() are Unicode-aware. The code conventions (camelCase, snake_case, etc.) work on the ASCII letter and digit portions of your text — non-ASCII characters and punctuation are treated as word separators and removed from the joined output.