HTML Beautifier
Format and beautify HyperText Markup Language (HTML).
Use 0 for no indentation; invalid values reset to 4 spaces before formatting.
Use 0 to keep lines unwrapped; invalid values reset to 0 before formatting.
What is Beautifying HTML?
Beautifying HTML means rewriting existing HyperText Markup Language with consistent whitespace, indentation, line breaks, and optional line wrapping so the document structure is easier to read and edit. It is useful when reviewing minified markup, generated templates, copied snippets, email HTML, CMS fragments, or inherited pages where tags and attributes are technically present but difficult to scan.
This tool formats the text you enter in the browser and writes the result to the output box. It is designed for common HTML markup, attributes, comments, text nodes, and embedded script or style blocks. Options let you choose indentation size, use tabs instead of spaces, wrap long lines, preserve existing line breaks, keep indentation on empty lines, indent the <head> and <body> sections, and end the output with a trailing newline.
The beautifier is a formatter, not a validator, sanitizer, accessibility checker, minifier, or browser compatibility tool. It does not guarantee that invalid markup becomes valid, does not remove unsafe scripts or event-handler attributes, does not fetch external resources, and does not prove that a fragment conforms to the HTML Standard or ARIA-in-HTML requirements. If the input contains incomplete tags, server-side templates, custom elements, unusual embedded languages, or malformed nesting, review the output before using it in production.
For safety, treat pasted HTML like source code. Review third-party markup before publishing it, especially when it contains scripts, inline event handlers, forms, iframes, external images, tracking pixels, or links to untrusted domains.
