HTML Formatter
Format, indent, or compact HTML markup for improved readability and clean code structure.
Run tool
This online HTML Formatter reorganizes markup into clean, human-readable structure or strips excess whitespace for a more compact output. You can paste HTML snippets, full web pages, or template fragments up to 1,000,000 UTF-8 bytes directly into the editor. When formatting for readability, the tool structures nested tags with customizable indentation from 0 to 8 spaces, defaulting to 2 spaces for standard front-end formatting conventions. If you select compact formatting instead, the tool reduces consecutive whitespace, strips extra padding around tags, and removes standard comments while preserving conditional comments that begin with bracketed if statements. Empty or whitespace-only input cleanly yields an empty result. Malformed markup that cannot be parsed by the formatting engine produces a clear parse error message rather than altering your document unpredictably. Use this utility to inspect raw markup, prepare clean code snippets for documentation, or tidy up generated HTML templates.
Instructions
- Paste or type your HTML markup into the input field.
- Choose your desired indentation width between 0 and 8 spaces, or keep the default of 2 spaces.
- Select beautify to format with indentation or minify to collapse whitespace and strip comments.
- Click Run to process the markup.
- Copy the formatted HTML from the output panel for use in your project.
Examples
- Format minified markup: Entering nested HTML tags on a single line with 2-space indentation outputs structured lines with clear tag hierarchy.
- Compact markup: Entering multi-line HTML with standard comments in minify mode strips comments and collapses unnecessary whitespace between tags.
FAQ
What happens if an invalid indentation number is entered?
Values outside the 0 to 8 range or non-numeric entries automatically fall back to the standard 2-space indentation setting.
Does the minify option remove all HTML comments?
Standard comments are removed, but conditional comments starting with bracketed if statements are preserved.
What is the maximum allowed input size?
The tool accepts HTML documents and snippets up to 1,000,000 UTF-8 bytes.
How does the tool handle invalid or broken HTML markup?
If the underlying parser cannot process the input structure, an HTML parse error appears in the output panel instead of corrupted text.