HTML Minifier
Minify HTML markup online by stripping comments, collapsing whitespace, and deleting line breaks to reduce document size.
Run tool
This online HTML minifier reduces the character footprint of your markup through text-based cleanup. When you paste your HTML code into the input field, the tool strips out comment blocks, including multi-line comment spans. It removes whitespace between adjacent tags, deletes newline characters, carriage returns, and tabs, and collapses repeated whitespace runs down to single spaces. The final output is neatly trimmed of leading and trailing spaces. Along with the cleaned markup, the tool calculates character metrics for non-blank input, displaying the original length, the minified character count, the total characters saved, and the percentage reduction rounded to one decimal place. If the input field is empty or contains only spaces, the utility returns empty text alongside zero-length counters. Because the cleaner operates through targeted text replacements without parsing DOM semantics or stripping HTML attributes, ensure your markup structure is intact before deployment.
Instructions
- Paste or type your HTML snippet into the HTML Input field.
- Run the minification to process the text.
- Review the cleaned markup in the output panel.
- Check the reported size reduction metrics, including original size, minified size, and percentage saved.
- Copy the resulting minified HTML code for your project.
Examples
- Input: <div> <!-- Page header --> <h1>Welcome</h1> </div> Result: <div><h1>Welcome</h1></div>
- Input: <p class="intro"> Hello world </p> Result: <p class="intro"> Hello world </p>
FAQ
Does this tool remove HTML attributes?
No. The tool cleans comments, removes spacing between tags, and collapses whitespace, but it does not alter or strip HTML attributes.
How are multiline comments handled?
All HTML comments enclosed within standard comment markers are removed completely, even if they span multiple lines.
What happens if I submit an empty input?
When the input is blank or contains only whitespace, the tool returns empty text and displays zero for the size measurements.
Does the minifier validate my HTML structure?
No. The tool performs text-level substitutions rather than full HTML syntax parsing or validation, so verify your markup independently.