Code Formatter

No. Formatting runs entirely in your browser using the Prettier engine and is never sent to or stored on a server.

You can format JavaScript/TypeScript, CSS, HTML, Markdown, and YAML. For JSON, use the dedicated JSON Formatter tool instead.

If the code isn't valid, the tool shows an error message above the result explaining why it couldn't be formatted.

It runs Prettier, a widely used open-source code formatter, directly in your browser and follows its default style rules like 2-space indentation and semicolons.

There's no fixed size limit — it works as long as your browser has enough memory. Very large files may just take a few extra seconds.