Beautify messy or minified HTML code with clean tag indentation, properly aligned nesting levels, and preserved inline script & preformatted blocks.
Formatted HTML will appear here...
What it does and why clean markup matters.
Messy markup, minified snippets, or auto-generated code can be nearly impossible to review and debug. The Developers Web Tools HTML Formatter restructures nested elements with clean, uniform indentation while properly protecting inline text elements, comments, and embedded script tags.
Whether you're auditing a third-party template, reviewing minified output from a CMS, or cleaning up a quick prototype, formatted HTML saves hours of visual parsing. The formatter handles full HTML5 documents — from DOCTYPE to nested <script> blocks — without any server involvement.
How the formatter handles edge cases and special elements.
Elements like <img>, <br>, <hr>, and <input> are treated as self closing without creating false nesting depths. The formatter never adds a phantom closing depth after a void element.
Elements such as <span>, <a>, and <strong> remain inline with their parent text when appropriate, avoiding fragmented sentences that would otherwise lose their readable context.
The contents of <pre>, <textarea>, <script>, and <style> blocks are safely preserved without unwanted line-wrapping or indentation changes inside them.
Built to handle real-world markup without surprises.
No. The formatting engine runs entirely on your device using client-side JavaScript. Your code stays 100% private.
Yes, the formatter handles full HTML5 documents from <!DOCTYPE html> to custom web components and embedded styles/scripts.
No. White-space sensitive elements like <pre> and <textarea> are protected from line breaking or indentation alterations.
2 spaces is standard for web development and modern frontend frameworks, while 4 spaces or tabs provide high visual contrast for deep DOM nesting.
Yes. Minified, single-line markup is tokenized and rebuilt into clean hierarchical structures with uniform indentation.