HTML & CSS Beautifier
Beautify, minify, and validate HTML or CSS instantly. Clean messy markup and styles, improve readability, catch syntax issues, and export the formatted result for frontend and developer workflows.
Beautifier Controls
Controls are placed above the editors so you get more width and height for large HTML and CSS files.
Code type
Output mode
Status
Paste HTML or CSS and click format or validate.
Code type
html
Current mode
beautify
Indentation
2 spaces
Error location
-
Included features
- Top control panel for larger input and output editors.
- HTML and CSS modes in a single SEO-friendly tool page.
- Line numbers in both panes for easier navigation.
- Error line highlighting in the input gutter.
- One-click jump to the detected error line.
- Code-frame style error preview for invalid HTML or CSS.
- Upload, beautify, minify, validate, copy, and download support.
HTML error details
Paste HTML or CSS and click format or validate.
An exact line and column could not be detected from the parser message.
Total input lines: 23
What can this HTML and CSS beautifier do?
This tool formats HTML and CSS for readability, minifies output for compact delivery, validates syntax through the formatter parser, and gives you editor-style line numbers, error highlighting, upload, copy, and download support.
Common use cases
Use it for webpage snippets, email templates, landing pages, style cleanup, CSS debugging, quick formatting before commits, and sharing clean code with teammates or clients.