HTML Formatter

Transform minified HTML into readable format with proper indentation. Each tag on its own line, nesting is clear.

Options

Number of spaces for indentation

All About HTML Formatting

When you need HTML Formatter

When analyzing competitor pages, debugging layouts, studying generated HTML (React, Vue). Minified HTML in DevTools is unreadable β€” format it.

HTML in modern development

Despite SPA frameworks, HTML remains the foundation of the web. JSX in React, Vue templates, Angular components β€” all compile to HTML. Understanding HTML structure is critical.

Minification vs formatting

Minification removes whitespace and comments to reduce file size. Formatting is the reverse process for readability. In production, use minified HTML.

Semantic HTML

Formatted HTML helps see semantics: are <header>, <nav>, <main>, <article>, <section> used correctly? Poor semantics means SEO and accessibility problems.

Tools for working with HTML

DevTools in browser (Elements), VS Code with HTML extensions, Emmet for quick writing, W3C HTML validator, Lighthouse for quality audit, Prettier for auto-formatting.

How to format HTML

1

Paste HTML

Enter HTML in the text field or upload an .html file. Files up to 10 MB are supported.

2

Choose indent

Select indent size: 2 or 4 spaces. 2 spaces are more compact, 4 are more visual.

3

Copy result

Click "Format" and copy the formatted HTML. Tag nesting will be visually obvious.

Frequently Asked Questions