Beautify and Minify Code (CSS, HTML, JS, SQL)

Beginner5 minutes6 steps

Learn to format messy code for readability and minify production code for performance. Covers CSS, HTML, JavaScript, and SQL formatting.

What You Need

Code to format (CSS, HTML, JavaScript, JSON, or SQL)

Choose the Right Formatter

Navigate to the appropriate tool: CSS Formatter, HTML Formatter, JSON Formatter, or SQL Formatter. Each is optimized for its language's syntax rules.

Paste Your Code

Paste the code you want to format — minified production code, inconsistently indented development code, or a one-liner SQL query. The input can be any size, from a single line to thousands of lines.

If you are formatting code from an API response or browser DevTools, paste it exactly as copied — line breaks and whitespace do not matter.

Beautify for Readability

Click "Beautify" or "Format." The tool applies consistent indentation (2 or 4 spaces), adds line breaks between declarations, aligns properties, and structures nested blocks. The result is immediately readable and debuggable.

Minify for Production

Click "Minify" to remove all unnecessary whitespace, comments, and line breaks. Minified CSS/JS files are 30-60% smaller, reducing download time for your users. Never deploy minified code as your source — always keep the readable version in your repository.

Use build tools (Vite, Webpack, esbuild) to auto-minify during builds rather than minifying manually. Manual minification is useful for quick tests and one-off files.

Compare Before and After

Review the formatted output. For CSS, check that selectors and properties are properly nested. For HTML, verify that tag indentation reflects the DOM hierarchy. For SQL, confirm that clauses (SELECT, FROM, WHERE, JOIN) each have their own line.

Copy and Use

Copy the formatted or minified code. For beautified code, paste it into your editor. For minified code, use it in your production deployment. The formatter also fixes common syntax issues like missing semicolons in CSS.

Ready to Try It?

Open the tool and follow the steps above. It is free, private, and works in your browser.

Try It Now

Frequently Asked Questions

Does formatting change how code works?

No. Formatting only changes whitespace and line breaks. The logic, behavior, and output are identical. Minification removes comments (which are not executed) and whitespace, but preserves all functional code.

How much does minification reduce file size?

CSS: typically 30-50% smaller. JavaScript: 30-60% smaller. HTML: 10-25% smaller. Gzip compression (applied by your server) further reduces these sizes by another 60-80%, so the combined savings are substantial.

Should I minify in development?

Never. Minified code is unreadable and impossible to debug. Keep readable, formatted code in your source repository and only minify during the production build process. Build tools handle this automatically.

What indentation should I use — tabs or spaces?

This is a team/project decision. The web industry has largely standardized on 2 spaces for JavaScript/TypeScript and HTML, 2 or 4 spaces for CSS. Use whatever your project's .editorconfig or Prettier config specifies. Consistency matters more than the choice itself.

Beautify and Minify Code (CSS, HTML, JS, SQL)

What You Need

Choose the Right Formatter

Paste Your Code

Beautify for Readability

Minify for Production

Compare Before and After

Copy and Use

Ready to Try It?

Frequently Asked Questions

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Beautify and Minify Code (CSS, HTML, JS, SQL)

What You Need

Choose the Right Formatter

Paste Your Code

Beautify for Readability

Minify for Production

Compare Before and After

Copy and Use

Ready to Try It?

Frequently Asked Questions

Related Tutorials

Test Regex Patterns Step by Step

Convert Between JSON, YAML, and XML