JS / CSS / HTML Formatter
Beautify or minify JavaScript, CSS and HTML code in your browser. Zero upload — your code never leaves your device.
Output appears here
How to format JavaScript online
Paste your minified or messy JavaScript into the input box, select JavaScript and Beautify, and the formatted code appears instantly. The formatter adds proper indentation, newlines, and spacing using the popular js-beautify library — the same engine used in many code editors.
How to minify CSS online
Switch to CSS and select Minify. The tool strips all whitespace, comments and unnecessary characters to produce the smallest valid CSS string — ideal for reducing page load times.
Is my code sent to a server?
No. All formatting is performed in your browser using the js-beautify library loaded from cdnjs. Your code never leaves your device.
Can it format TypeScript?
TypeScript syntax is largely valid JavaScript. Select JavaScript — most TypeScript files will format correctly, though TypeScript-specific decorators and some advanced generics may not be preserved perfectly.
What is the difference between beautify and minify?
Beautify adds indentation and line breaks to make code human-readable. Minify removes all whitespace and shortens identifiers to produce the smallest possible file size for faster network transfer.