HTML Formatter
Format or minify HTML source for easier inspection, cleaner indentation, or more compact markup output.
Tool workspace
Use HTML Formatter
Privacy-first processing
This tool is designed to process its working input in your browser. For details about site-level analytics, advertising, and data handling, see the Privacy Policy.
Formatting preserves content inside pre, textarea, script, and style elements. Minification uses conservative whitespace collapsing and does not minify embedded JavaScript or CSS.
Quick start
How to use HTML Formatter
- 1
Paste your raw, messy, or minified HTML code into the input editor panel.
- 2
Configure preferred indentation settings such as 2 spaces, 4 spaces, or tab characters.
- 3
Choose Format to beautify the markup or Minify to create a compact HTML representation.
- 4
Review the result and use Copy or the available output actions to move the processed markup into your workflow.
Overview
About HTML Formatter
Writing clean, well-structured HTML code is essential for maintainability, readable project architecture, and seamless collaboration among web development teams. Over time, nested DOM structures, auto-generated markup, and minified HTML files become cluttered, making debugging and editing difficult. Our Free Online HTML Formatter provides syntax-aware HTML beautification and minification. Formatting applies consistent indentation for easier inspection, while minification creates a more compact representation for source-size reduction. Both operations should be reviewed when working with unusual templating syntax or malformed markup. Whether you are debugging complex web app templates, beautifying scraped source code, or tidying up legacy HTML files, this tool delivers instant results. All formatting calculations execute locally inside your browser JavaScript runtime, ensuring maximum processing speed and local browser processing.
FAQ
Frequently asked questions
- Does this tool support modern HTML5 elements and self-closing tags?
- Yes. The formatter fully recognizes standard HTML5 semantic tags as well as void elements like img, input, meta, link, and br without requiring explicit end tags.
- Can this formatter fix invalid or broken HTML tags automatically?
- The formatter cleans up indentation and visual hierarchy structure. While it safely reorganizes existing tags, severe syntax errors should be reviewed using a validator.
- Is my source code uploaded or stored on an external server?
- HTML formatting and minification run in your browser and do not require uploading the working markup to our application server for processing.
- Can I format HTML snippets that contain inline CSS styles or JavaScript scripts?
- Yes. The parser preserves inline style attributes, internal style tags, and embedded script blocks while formatting the surrounding HTML structure.
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