About the HTML Formatter / Beautifier
Writing or maintaining HTML often results in inconsistent indentation, unclosed tags, or minified single-line code blocks extracted from production builds. This HTML Formatter & Beautifier parses your markup, restores proper hierarchical indentation, and aligns tags according to modern web development standards.
This tool is useful for web developers inspecting minified web pages, email marketing specialists cleaning up HTML email templates, and students learning clean markup hierarchy. Because the formatter runs entirely in your browser, your code remains 100% private.
To use it, paste your HTML into the input box and choose your preferred indentation (2 spaces, 4 spaces, or 8 spaces). You can also toggle the 'Strip Comments' option to remove HTML comment blocks, or click 'Minify HTML' to compress the entire document onto a single line for production deployment.
For example, pasting a minified snippet like '<div><h1>Title</h1><p>Text</p></div>' and clicking Format produces clean, indented lines with matching closing tags, making nested DOM hierarchies easy to read and maintain.
A common HTML mistake is failing to close non-void elements, which can cause subtle layout bugs across different rendering engines. Void elements (such as <img>, <br>, <hr>, and <input>) do not require closing tags in HTML5.
Tip: Use the 2-space indentation setting for modern frontend frameworks (React, Next.js, Vue) to align with standard ESLint and Prettier configurations.