HTML minifier
HTML minifier reduces HTML source and reports character counts. Compare the generated output with your original markup before testing it in a safe environment.
HTML minifier: what this tool checks
HTML minifier processes pasted HTML source to produce a more compact version. It displays the resulting markup alongside original and minified character counts, helping developers evaluate a source-level reduction. Use it for a controlled snippet or document review when you want to inspect the output before integrating it.
How to use it
- Keep an unchanged copy of your original HTML, then paste the source into the input field.
- Submit it and compare the resulting markup and character totals.
- Copy the output only after checking the document structure, then test it with the styles and scripts used by the page.
Understanding your results
The result comes from an HTML parser and minifier, so its serialization may differ from your original formatting. Character reduction is not the same measurement as compressed transfer bytes or browser rendering time. Avoid pasting credentials, private content, or source that should not be sent to an online service.
Frequently asked questions
Does this minify every resource used by my page?
No. The input is the HTML source you provide. Linked files remain separate resources; examine stylesheets and scripts with their corresponding tools when appropriate.
Can I replace a production template without testing?
Keep the original and test first. Whitespace, embedded content, scripts, and template syntax can carry meaning, and a smaller output does not prove that all page behavior has been preserved.
Continue your review
Handle stylesheet source with the CSS minifier, examine script source using the JS minifier, and review published document weight through the Website page size checker.
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CSS minifier compacts pasted stylesheet source and compares character counts. Review the final CSS before testing layout, responsive rules, and visual behavior.
JS minifier compacts pasted JavaScript and reports source character counts. Inspect the final result and test application behavior before publishing the script.
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