HTML Formatter / Minifier
Beautify or minify raw HTML code. Format HTML for readability or compress it for production use.
HTML Input
Formatted Output
Formatted HTML will appear here
About HTML Formatter
This tool formats and beautifies HTML with proper indentation, or minifies it for the smallest payload — entirely in your browser. Paste, upload, or load the sample and the result appears instantly. Perfect for cleaning up generated markup, code review, and debugging.
About HTML Formatter / Minifier
An HTML formatter and minifier is a dual-purpose development tool that can both beautify messy HTML code with proper indentation and formatting for readability, or compress HTML by removing unnecessary whitespace and comments to reduce file size. This tool is essential for both development and production optimization workflows.
Why use a HTML Formatter / Minifier?
Using an HTML formatter improves code readability and maintainability during development, while the minifier reduces file sizes for faster website loading times and better SEO performance. It ensures consistent code formatting across team projects, helps debug HTML structure issues, and optimizes production code without manual effort, leading to improved website performance and user experience.
Who is it for?
This tool is essential for web developers formatting HTML code for better readability, front-end developers optimizing production code for performance, web designers cleaning up generated HTML from editors, development teams maintaining consistent code standards, and anyone working with HTML who needs to either beautify code for development or compress it for production deployment.
How to use the tool
Paste your raw or minified HTML code into the input field
Choose Format mode for readable output or Minify mode for compression
Click the Format HTML (or Minify HTML) button to process your code; pasting, uploading a file or loading the sample runs it automatically
Review the formatted or minified output with improved structure or reduced size
Copy the processed HTML code for use in your development or production environment
Frequently Asked Questions
How do I format and beautify HTML code?
Paste your HTML into the input area (or upload a file, up to 5 MB). The tool re-indents with 2 spaces and puts block elements on their own lines; long tag lines are wrapped automatically. There are no indent-size or attribute-layout settings. Copy the formatted output. Runs entirely in your browser — your HTML never leaves the device. Useful for: cleaning up minified HTML, standardizing team formatting, debugging deeply-nested markup, preparing HTML for code review.
What's the difference between formatting and minifying HTML?
Formatting (beautifying) adds whitespace and indentation for readability. Minifying collapses whitespace between tags, removes comments (IE conditional comments are kept), and minifies the contents of script and style blocks. It does not remove quotes from attributes or change attribute values. Whitespace inside pre and textarea is kept, and a single space between inline elements is kept. Use formatting during development; use minification for production output. Switch between them with the Format / Minify toggle.
Is my HTML sent to a server?
No — formatting and minifying run entirely in your browser via JavaScript. Your HTML never reaches a server, never gets logged. Verify in DevTools' Network tab: the only requests are for the tool's own code (for example the minifier, loaded the first time you minify), never your HTML. Safe for proprietary templates, internal CMS code, or any HTML you'd rather not log.
Does this handle inline JavaScript and CSS?
Yes. In Format mode, `<script>` and `<style>` blocks are re-indented with the JS/CSS rules and nested under the surrounding HTML. In Minify mode, script bodies are minified with a JavaScript minifier and style bodies with a CSS minifier; if a block can't be parsed it is left exactly as written. For pure JS or CSS, use [JS Formatter](/tools/js-formatter/) or [CSS Formatter](/tools/css-formatter/) separately.
How are HTML attributes formatted?
The tool has no attribute-layout setting. In Format mode, attributes stay on the same line as the tag and the line is wrapped automatically when it gets long, with continuation lines aligned. In Minify mode, the whitespace between attributes is collapsed to a single space and attribute values are left untouched. If you need one attribute per line, adjust the output in your editor.
Will formatting change my HTML behavior?
Mostly no — formatting only changes whitespace. There are subtle edge cases. (1) `<pre>` and `<textarea>` content: whitespace is significant. Minify mode keeps it; in Format mode check the result for these elements. (2) `white-space: pre` styling on regular elements: whitespace is also significant and the tool can't see your CSS. (3) Inline elements with whitespace between: a space between `<span>` elements appears as visible space. Minify mode collapses it to one space instead of removing it, but Format mode can add line breaks there, which also render as a space. Review the output for these edge cases.
How do I handle very deeply nested HTML?
Deeply nested HTML (5+ indentation levels) becomes hard to read regardless of formatting. Consider refactoring: extract repeated patterns into components (React, Vue, Web Components), or use templating partials (Handlebars, Pug). For the immediate formatting goal, the formatter handles any nesting depth — the resulting indentation just stretches wider. The indent size is fixed at 2 spaces.
Should I format HTML on every save or only periodically?
On every save for consistency. Modern editors (VS Code, Sublime, IntelliJ) can format HTML automatically on save, which eliminates manual effort and keeps style consistent across the team. This online formatter is for one-off cleanup (pasted code, copied from a CMS, etc.) — for active development, configure your editor to auto-format. For production output, use Minify mode here or your build tool.
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