JavaScript Beautifier
Format minified or messy JavaScript into clean, readable code
Frequently Asked Questions
What does a JavaScript beautifier do?
It rewrites compressed or badly formatted JavaScript with proper indentation, line breaks after each statement and spacing around operators. The logic is untouched, and only the layout changes, so the script still does exactly what it did before.
Can it make minified code readable again?
It restores the structure, which is usually enough to follow what a script is doing. It cannot bring back the original variable names or comments: a minifier renames variables to single letters and deletes comments permanently, and no formatter can reverse that.
Will beautifying ever break my script?
Reformatting only adds whitespace and line breaks in places JavaScript ignores, so behaviour is preserved. Content inside strings, template literals and regular expressions is left exactly as it is rather than being reindented.
Does it support modern JavaScript syntax?
Yes. Arrow functions, classes, template literals, async and await, destructuring and spread all format correctly, because the formatter works from the code structure rather than a fixed list of keywords.
Is my code uploaded anywhere?
No. Everything runs in your browser with JavaScript, so your script never leaves your device, which makes it safe for private or client work.
Is the JavaScript beautifier free?
Yes, completely free with no sign-up and no limit on how often you use it or how large your file is.