Can it handle any HTML?

Works with full HTML5 documents and partial tag fragments. Invalid markup is corrected as much as possible.

Does it change my code content?

Only indentation and line breaks are adjusted. Tags, attributes, and text content are not modified.

Can I change the indent size?

Currently fixed at 2 spaces. Customizable indent options are planned for a future update.

Does the HTML formatter also format inline CSS and JavaScript?

Yes. CSS inside ` ` tags and JavaScript inside ` ` tags are also formatted.

What is the difference between an HTML Formatter and an HTML Validator?

A Formatter improves readability by fixing indentation and line breaks. A Validator checks for HTML syntax errors. This tool is an HTML Formatter.

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Developer Tools

Input

HTML Beautifier Features

HTML Formatter · HTML Beautifier — automatically formats messy HTML with consistent 2-space indentation. Powered by the js-beautify library to clearly visualize tag hierarchy. Copy the formatted result with one click. Free online HTML beautifier.

How to Use

① Paste your HTML code into the input field. ② Click 'Format'. ③ The formatted HTML with proper indentation appears below. ④ Click 'Copy' to save the result to your clipboard.

When to Use

• Converting minified HTML into readable code • Normalizing inconsistent indentation from pasted code • Clarifying HTML structure before a code review • Cleaning up email templates or CMS-generated HTML

Frequently Asked Questions

Q. Can it handle any HTML?: A. Works with full HTML5 documents and partial tag fragments. Invalid markup is corrected as much as possible.
Q. Does it change my code content?: A. Only indentation and line breaks are adjusted. Tags, attributes, and text content are not modified.
Q. Can I change the indent size?: A. Currently fixed at 2 spaces. Customizable indent options are planned for a future update.
Q. Does the HTML formatter also format inline CSS and JavaScript?: A. Yes. CSS inside `<style>` tags and JavaScript inside `<script>` tags are also formatted.
Q. What is the difference between an HTML Formatter and an HTML Validator?: A. A Formatter improves readability by fixing indentation and line breaks. A Validator checks for HTML syntax errors. This tool is an HTML Formatter.