Switch text between UPPERCASE, lowercase, Title Case and Sentence case in one click, or turn it into camelCase, snake_case and clean URL slugs. Over 50 transforms, live word count and undo - all in your browser.
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No transform by that name - yet. Tell us what you need on the contact page.
Regex tips: $1 inserts a group, \n a new line. \s{2,} finds double spaces, ^\d+\.\s finds list numbers.
Text stuck in a picture or a scanned page? Pull it out first with Image to Text (OCR), then clean it up here.
| Case | Example | Best for |
|---|---|---|
| Sentence case | The numbers tell the story. | Body text, UI labels, email subjects |
| Title Case | The Lord Of The Rings | Book and film titles, buttons |
| Headline Case | The Lord of the Rings | Blog posts, news headlines (AP, Chicago) |
| UPPERCASE | FREE SHIPPING | Short labels and warnings |
| lowercase | hello world | Tags, emails, fixing caps lock |
| camelCase | userFirstName | JavaScript and Java variables |
| PascalCase | UserFirstName | Classes and React components |
| snake_case | user_first_name | Python, database columns |
| kebab-case | user-first-name | CSS classes, file names |
| CONSTANT_CASE | MAX_RETRY_COUNT | Constants, environment variables |
| URL slug | stefan-cel-mare | Clean, SEO-friendly page URLs |
Writing for X? Check the length with the Twitter Character Counter before you post.
Most title case converters just capitalize every word. Headline Case follows the style guides instead.
Copied text often brings junk along. One click fixes the usual suspects.
Shipping code too? Shrink it with Minify JS/CSS, or hear your text read aloud with Text to Speech.
Paste your text into the Input box and click lowercase. The converted text appears in Output, ready to copy or download.
The same works the other way round with UPPERCASE. Accented letters are handled too - "ȘTEFAN" becomes "ștefan" and "straße" becomes "STRASSE".
Title Case capitalizes every word: "The Lord Of The Rings". Headline Case follows AP and Chicago style and keeps small words lowercase: "The Lord of the Rings".
In Headline Case the first and last word, and the word after a colon, are always capitalized.
Articles (a, an, the), short conjunctions (and, but, or, nor, for, as) and short prepositions (at, by, in, of, on, per, to, via, vs). Verbs and pronouns such as "is" and "it" are capitalized.
Hyphenated words keep their hyphen: "a step-by-step guide" becomes "A Step-by-Step Guide".
It lowercases the text and capitalizes the first letter of every sentence - after a period, question mark, exclamation mark and at every new line. The pronoun "I" is capitalized too.
Abbreviations like "e.g." and decimals like "3.5" do not start a new sentence.
They are naming styles for code: camelCase (userFirstName) for JavaScript variables, PascalCase (UserFirstName) for classes, snake_case (user_first_name) for Python and databases, and kebab-case (user-first-name) for CSS classes and URLs.
The converter also splits existing names, so "XMLHttpRequest" becomes "xml_http_request". Each line is converted on its own.
Yes. Switch on Regex and use any JavaScript pattern, with $1 or $<name> for groups and \n for a new line. Whole word, Match case and Multiline are separate switches.
The live counter shows how many matches there are before you replace, and a pattern that runs too long is stopped instead of freezing the page.
Yes. Press Undo or Alt+Shift+Z to step back, and Redo or Alt+Shift+Y to step forward again. Clear and Reset can be undone too.
Switch on Chain transforms to stack several conversions on the output, for example Remove Extra Spaces, then Sentence case.
No. Every conversion runs in your browser, so the text never leaves your device. It handles a megabyte of text without freezing.
Nothing is stored unless you switch on Remember my text, which keeps it in this browser only.