Free Code Beautifier
Format HTML, CSS, and JavaScript for readability. Runs in your browser. Nothing is uploaded. Your code never leaves your device.
Language-specific beautifiers
HTML Beautifier →
Add indentation and line breaks to minified or messy HTML. Handles nested tags, inline styles, and CMS output.
CSS Beautifier →
Expand one-line rules, indent properties, and add spacing between selectors.
JavaScript Beautifier →
Restore structure to minified or uglified JavaScript. Handles modern ES2020+ syntax.
What beautification does
Beautification (also called formatting or prettifying) adds indentation, line breaks, and consistent spacing to make compressed or messy code readable. The output works identically to the input — only whitespace changes.
Useful for debugging minified files, reviewing third-party code, or cleaning up generated markup. Paste any HTML, CSS, or JavaScript and the language is auto-detected.
Code Beautifier FAQ
What's the difference between a beautifier and a formatter?
Same thing. Both restructure code for readability by adding indentation and line breaks, without changing behavior. You may also see it called "prettify" — all three terms describe the same operation.
What's the difference between beautify and minify?
Opposite operations. Minify removes whitespace, comments, and line breaks to make files as small as possible for production. Beautify adds them back to make code readable for editing and debugging.
Can I beautify code in languages other than HTML, CSS, and JS?
Currently MinifyTools supports HTML, CSS, JavaScript, and JSON. The beautifier will format any text you paste, but language-specific rules only apply to those four.
Does beautifying change how my code works?
No. Only whitespace, indentation, and line breaks change. Logic, selectors, values, and structure remain identical. The code runs exactly the same before and after.