Free Developer Tool
HTML Formatter
Beautify or minify your HTML code instantly. Format with custom indentation, remove comments, and optimize for production. 100% client-side processing - your code never leaves your browser.
Error
Quick Usage Guide
Beautify Mode
Beautify adds proper indentation and line breaks to make your HTML readable. Preserves content inside pre, code, script, and style tags.
Minify Mode
Minify removes unnecessary whitespace between tags and optionally strips HTML comments to reduce file size.
HTML Formatting Best Practices
Why Format HTML?
Well-formatted HTML improves readability and makes it easier to spot errors. Proper indentation helps visualize the document structure and nesting hierarchy.
Why Minify HTML?
Minification reduces HTML file size by 10-30%, improving page load times. Removing whitespace and comments decreases bandwidth usage and speeds up rendering.
Preserved Content
Content inside <pre>,
<code>,
<script>, and
<style> tags is preserved
as-is during formatting to maintain functionality.
Important Note
This tool provides basic formatting. Be careful with inline elements like
<span> and
<a> where whitespace may affect rendering.
Block vs Inline Elements
| Type | Examples | Formatting Behavior |
|---|---|---|
| Block | div, p, section, article, header | New line, indented |
| Inline | span, a, strong, em, img | Same line, no extra spacing |
| Void | br, hr, img, input, meta | Self-closing, no end tag |
| Preformatted | pre, code, script, style | Content preserved exactly |
Common Use Cases
Email Templates
Beautify HTML email templates for editing, then minify before sending to reduce email size and improve deliverability.
CMS Content
Clean up HTML from WYSIWYG editors that often produce messy, poorly formatted markup with excessive whitespace.
Code Review
Format minified HTML from production sites to understand the structure and review the markup for issues.
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