HTML Formatter

About This Tool

The HTML Formatter & Beautifier is a free online tool that transforms compressed or poorly indented HTML into clean, readable markup with consistent indentation. It understands the difference between block-level and inline elements, keeping inline content like strong, em, and a on a single line while properly nesting block elements like div, section, and ul.

The minify mode strips comments and collapses whitespace for the smallest possible output. All processing runs in your browser — no HTML is ever sent to a server.

How to Use

1. Paste your HTML content into the Input panel.
2. Choose your preferred indentation (2 or 4 spaces).
3. Click Format to format, or Minify to minify.
4. Copy the result with the Copy button.

Use Cases

Front-end developers use this to clean up HTML exported from design tools like Figma or Adobe XD. Web developers format email templates, CMS-generated markup, and legacy HTML files. The minify feature is ideal for reducing HTML file size in production builds when a build tool isn't available.

FAQ

• Does it validate HTML? — The tool uses the browser's built-in HTML parser, which automatically corrects minor errors (like missing closing tags). It does not report validation errors explicitly, but the output shows the corrected structure.
• Are void elements handled correctly? — Yes. Self-closing tags like img, br, and input are output without a closing tag, as per the HTML5 specification.
• Is my data safe? — All processing is local in your browser. No HTML is ever sent to any server.