Beautify minified or messy JavaScript code with proper indentation and line breaks for easy reading.
The JavaScript Formatter is a free online tool that pretty-prints your JS code by analyzing its structure — tracking braces, brackets, and semicolons to determine nesting depth and insert appropriate line breaks and indentation. It respects string literals and comments, ensuring formatting is only applied to actual code structure.
Debugging minified JavaScript is one of the most frustrating tasks in web development. Whether you're inspecting a production bundle, analyzing a third-party library, or reviewing obfuscated code, this formatter instantly transforms compressed code into a readable, well-structured format that you can navigate and understand.
Paste your JavaScript into the editor, choose your indent size, and click the format button. The tool processes everything in your browser with no server round-trips, keeping your code completely private. The formatted result can be copied with a single click and pasted directly into your editor.
This formatter handles ES6+ syntax including template literals, arrow functions, and destructuring. It's the fastest way to make any JavaScript code readable without installing extensions, configuring Prettier, or setting up a build process.