Does it validate my HTML?

It focuses on formatting/indentation. For strict validation use a dedicated validator, but malformed nesting will be visible in the indentation.

Will it change the actual content of my HTML?

No — it only adjusts whitespace and indentation. Tags, attributes, and text content remain exactly as they were, just laid out more readably.

Does it handle inline JavaScript or CSS inside the HTML?

Content inside script and style blocks is preserved as-is; the formatter focuses on indenting the surrounding HTML tag structure rather than reformatting embedded code.

Can I use this on a full HTML document, not just a snippet?

Yes — paste anything from a small snippet to a full page with html, head, and body tags, and it will be indented consistently throughout.

Why does the indentation look odd in one section?

Inconsistent or visibly broken indentation after formatting often points to a genuine nesting problem in the original HTML, like a missing closing tag — worth checking that section for a markup error.

Is this useful for reviewing HTML exported from a page builder?

Yes — page builders and CMS tools often export dense, minimally-formatted HTML, and running it through this formatter makes the actual structure much easier to read and audit.

HTML Formatter

Beautify and indent HTML.

TL;DR: HTML Formatter is a free, browser-based tool that lets you beautify and indent HTML.

Paste HTML

Output

What Is the HTML Formatter?

HTML Formatter organizes messy HTML code with consistent indentation, proper tag nesting, attribute alignment, and clean comment formatting according to W3C standards.

Step-by-Step: Using This Tool

Paste your HTML markup.
Select indentation style (2 spaces, 4 spaces, or Tabs).
Click 'Format HTML' to beautify code.
Copy formatted HTML or download as an `.html` file.

Maximize Your Results

Fix Indentation Bugs: Aligns unclosed `
` tags and nested containers for effortless readability.
Clean Up Scraped Markup: Reconstruct visual hierarchy from minified webpage source code.
Attribute Formatting: Keeps HTML attributes aligned and easily readable.

Related Guides & Tutorials

Json Formatting For Developers — Learn in-depth concepts, best practices, and expert tips.
Base64 Encoding Explained — Learn in-depth concepts, best practices, and expert tips.

100% Client-Side Privacy Guarantee

All processing runs locally inside your browser using JavaScript and HTML5 APIs. Your data, files, and inputs are never uploaded to any remote server. Complete privacy by design.

Frequently Asked Questions

: It focuses on formatting/indentation. For strict validation use a dedicated validator, but malformed nesting will be visible in the indentation.
: No — it only adjusts whitespace and indentation. Tags, attributes, and text content remain exactly as they were, just laid out more readably.
: Content inside script and style blocks is preserved as-is; the formatter focuses on indenting the surrounding HTML tag structure rather than reformatting embedded code.
: Yes — paste anything from a small snippet to a full page with html, head, and body tags, and it will be indented consistently throughout.
: Inconsistent or visibly broken indentation after formatting often points to a genuine nesting problem in the original HTML, like a missing closing tag — worth checking that section for a markup error.
: Yes — page builders and CMS tools often export dense, minimally-formatted HTML, and running it through this formatter makes the actual structure much easier to read and audit.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). HTML Formatter [Software]. https://nexlove.org/tools/html-formatter.html

“HTML Formatter.” NexLove.org, 2026, nexlove.org/tools/html-formatter.html.

NexLove.org (2026) HTML Formatter. Available at: https://nexlove.org/tools/html-formatter.html (Accessed: 2026).

@misc{nexlove_html_formatter,
  title = {HTML Formatter},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/html-formatter.html}
}

Embed This Tool

Add the live HTML Formatter tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/html-formatter.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="HTML Formatter — NexLove.org" loading="lazy"></iframe>

HTML Formatter Technical Details

Built for developers, this utility provides instant data formatting, conversion, and inspection without the overhead of heavy IDEs.

Features

Zero Latency: All parsing and formatting happens entirely in your browser using local JavaScript engines.
Data Security: Your payloads, tokens, and code snippets are never sent to a backend server, making it safe for proprietary code.
Strict Standards: Follows standard encoding and RFC protocols to ensure output validity.

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