What is HTML Formatter?

HTML Formatter is a tool for converting minified or unformatted HTML into readable format with indentation. Also called HTML Beautifier, HTML Prettifier, or Pretty Print HTML.

Minified HTML saves bytes but is unreadable. Formatting adds indentation and line breaks, making DOM structure clear. Needed for debugging, code review, studying others' code.

Are attributes and comments preserved?

Yes. All tag attributes, HTML comments ( ), DOCTYPE, meta tags are preserved. Formatter only adds whitespace and line breaks.

Does it work with inline JavaScript and CSS?

Yes. Content of and tags is preserved as-is. For formatting JS and CSS inside HTML, use separate formatters.

Is it safe to paste HTML with sensitive data?

Yes. Formatting is done in the browser. HTML is not sent to the server. You can use it for private projects.

Are self-closing tags supported?

Yes. Tags like , , , , are handled correctly. Formatter doesn't add closing tags in HTML5.

How is HTML5 different from XHTML?

HTML5 forgives errors: doesn't require closing all tags, attribute quotes are optional. XHTML is stricter — it's XML. Formatter works with HTML5.

Does formatting affect page display?

Usually no. But in some cases, whitespace between inline elements may add small gaps. For critical layouts, verify the result.

How to format HTML in editor?

VS Code: Shift+Alt+F or Prettier extension. WebStorm: Ctrl+Alt+L. Sublime Text: HTML-CSS-JS Prettify. Online formatters for quick tasks.

Can I format HTML fragment?

Yes. You don't need a full document with and . Formatter handles any fragment: a single div, list, table.

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HTML Formatter

HTML Formatter

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

Options

Indent

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 — format it.

HTML in modern development

Despite SPA frameworks, HTML remains the foundation of the web. JSX in React, Vue templates, Angular components — 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

Paste HTML

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

Choose indent

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

Copy result

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

CSS Formatter

Format CSS in seconds. Beautify, prettify with proper indentation. Works in browser, no re...

Formatters

XML Formatter

Format XML in seconds. Beautify, prettify, validate. Works in browser, no registration. Su...