HTML Formatter & Beautifier

How to use this tool

1. Paste HTML into the input, or open or drop a local .html or .htm file.
2. Choose Beautify for readable indentation or Minify for conservative compaction.
3. In Beautify mode, choose indentation and a wrap column; optionally self-close void elements.
4. Review the output and input-to-output character counts as they update.
5. Copy the result or download an HTML file to keep it on your device.

Beautify or minify HTML

HTML from templates, build tools, or copied web pages is often minified or inconsistently indented. Choose Beautify to add indentation and line breaks that make the document hierarchy easier to scan. You can paste a snippet, open a local .html or .htm file, or drop a file onto the input area; reading and formatting stay in your browser.

Choose Minify when you need a compact copy for a snippet, a quick size comparison, or an example embedded in documentation. This mode removes whitespace-only separators between block-level elements. The character counts show how the input and output lengths compare, and Download saves the current result as an HTML file.

Minification here is deliberately conservative: it keeps spaces between inline elements and text, comments, and the contents of <pre>, <textarea>, <script>, and <style> intact. It does not remove comments, shorten attribute values, or optimize scripts and styles. Whitespace can affect how HTML renders, so review the output before using it in a production build.

Void elements and XHTML

HTML void elements such as <br>, <img>, and <input> have no closing tag. In HTML5, adding a slash is optional and does not make an element XML-style self-closing. XHTML requires XML syntax, so enable Self-close void elements only when the output will be used in an XHTML or another XML context.

Indentation and formatting limits

Two-space indentation is common in JavaScript projects and keeps nested markup compact. Four-space indentation can be easier to follow in deeply nested documents, while tabs let each developer choose a display width in their editor. The wrap setting controls long lines; it does not validate attributes or guarantee that output matches a particular style guide.

Formatter vs. linter

A formatter changes presentation: indentation, line breaks, and selected whitespace. It does not fix mismatched tags, repair invalid nesting, or check whether the document is valid. An HTML linter such as HTMLHint or html-validate can flag issues such as missing alternative text, invalid nesting, deprecated elements, and ARIA misuse. For production markup, use a formatter for readability and a validator or linter for correctness.