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A free online HTML formatter and beautifier for developers and web designers. Customize indentation and line breaks to improve code readability and team collaboration.

HTML Minifier
Minify HTML code online by removing spaces, comments, and redundant characters. Optimize CSS, JS, and SVG to reduce file size.

Word to HTML Converter
Convert Word documents into web-ready HTML code to solve formatting and compatibility issues for online publishing.

HTML to UBB Converter | Free UBB to HTML Code Tool
Instantly convert between HTML and UBB code. Perfect for forums, blogs, and cross-platform publishing to ensure formatting compatibility.

HTML Entity Encoder & Decoder
Convert HTML special characters to and from entity codes for secure web rendering and code display.

HTML Minifier
Minify HTML code online by removing spaces, comments, and redundant characters. Optimize CSS, JS, and SVG to reduce file size.

Word to HTML Converter
Convert Word documents into web-ready HTML code to solve formatting and compatibility issues for online publishing.

HTML to UBB Converter | Free UBB to HTML Code Tool
Instantly convert between HTML and UBB code. Perfect for forums, blogs, and cross-platform publishing to ensure formatting compatibility.

HTML Entity Encoder & Decoder
Convert HTML special characters to and from entity codes for secure web rendering and code display.

HTML to Markdown Converter
Efficiently convert HTML to Markdown format with support for multiple custom style configurations.
When dealing with minified, messy, or inconsistently styled HTML code, readability and team efficiency drop significantly. This tool visually reconstructs your source code by parsing the HTML Document Object Model (DOM) structure and applying your specified formatting rules (such as indentation, line breaks, and brace styles). The result is a cleanly structured, uniformly formatted, and easily maintainable HTML document. HTML formatting and beautification is the process of converting code from a "machine-optimized" state to a "human-readable" state by adjusting spaces, line breaks, and indentation levels without altering the code's logical semantics.
Q: Will the beautified code affect my webpage's functionality?
No. Formatting only adjusts the visual layout of the code (spaces, line breaks, indentation) and does not modify the logic or content of any HTML, CSS, or JavaScript.
Q: What inputs does the HTML beautifier support?
It supports standard HTML5 code, including nested tags, inline styles, and scripts. For highly irregular or erroneous code, the parser may not correctly identify the structure, so it is recommended to ensure your code is fundamentally valid first.
Please ensure that the input HTML code structure is fundamentally complete and valid for the best formatting results. This tool primarily optimizes HTML structure. For extreme beautification of complex CSS/JS code inside <style> and <script> tags, we recommend using dedicated tools. Processing very large files may require a brief wait. Before copying the results, we suggest taking a quick look at the formatted code to ensure it meets your expected style.
For collaborative team projects, it is recommended to standardize formatting configurations and document them. For example, Vue/React projects often use 2-space indentation to save horizontal space, while traditional enterprise-level web projects might stick to 4 spaces. A typical example: formatting the minified HTML snippet <div><p>Hello</p></div> using 2-space indentation and an "end-of-line" brace style will result in:<div>. This significantly improves the readability of nested hierarchies.
<p>
Hello
</p>
</div>