Beautify, indent, and clean up JavaScript code instantly. Free online JS formatter with customizable indentation, brace style, and one-click copy.
The Tooloogle JavaScript Beautifier reformats minified, ugly, or inconsistent JavaScript into clean, readable, properly indented code in one click. Whether you're inspecting a third-party bundle, debugging a colleague's pull request, or cleaning up legacy code before commit, the beautifier turns one-line spaghetti into structured source you can actually read.
Plain ES5 / ES2015+ JavaScript (modules, classes, arrow functions, async/await)
JSX-friendly mode for React components
Minified bundles from webpack, esbuild, Rollup, and Parcel
JSON-like data structures (use the JSON Viewer for richer JSON tooling)
Indent size — 2, 4, or 8 spaces, or tabs.
Brace style — collapse, expand, or end-expand for braces and parentheses.
Line wrap — set a maximum line length to break long expressions.
Preserve newlines — keep your existing blank lines or normalise them.
Quote style — convert between single and double quotes.
Paste your JavaScript into the input box (or drag and drop a .js file).
Tweak the indentation and brace options if the defaults don't match your style guide.
Click Beautify — the formatted result appears instantly on the right.
Click Copy or Download to save the cleaned-up code.
Reading minified code is slow and error-prone. A beautifier reveals the actual control flow, helps you spot accidentally-shipped console.log statements, and makes it possible to set breakpoints in browser DevTools. For code reviews, side-by-side diffs are much easier when both sides follow the same indentation and brace conventions.
Beautification runs entirely in your browser. Your code — which often contains business logic, API endpoints, or proprietary algorithms — is never uploaded, logged, or transmitted. Verify with DevTools: zero network requests fire when you click Beautify.
How to Use JavaScript Beautifier - Format & Beautify JS Code Online
Enter or paste the content you want to process using the javascript beautifier - format & beautify js code online.
Adjust any available settings or options to customize the output.
View, copy, or download your processed results instantly.
Beautify, indent, and clean up JavaScript code instantly. Free online JS formatter with customizable indentation, brace style, and one-click copy.
Tool Use:
532Type:
Free ToolPrivacy:
Client SideBeautify and indent HTML markup instantly. Free online HTML formatter with custom indentation, attribute wrapping, and one-click copy — browser-based.
Beautify, indent, and tidy CSS stylesheets instantly. Free online CSS formatter with customizable indentation and selector grouping — browser-based.
View, format, validate, and explore JSON data with collapsible nodes, syntax highlighting, and one-click copy — free and browser-based.
Format, validate, and minify XML documents instantly. Free online XML beautifier with syntax highlighting, error detection, and one-click copy.
Format, beautify, and standardise SQL queries instantly. Free online SQL formatter supporting MySQL, PostgreSQL, SQL Server, Oracle, and SQLite.