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HTML Minifier: Why and How to Minify HTML

9 min read

Minifying HTML removes comments, extra spaces, and line breaks so the file is smaller and loads faster. For production sites and email templates, every byte can help.

What minification does

  • Removes comments: HTML comments are stripped (e.g. <!-- ... -->).
  • Collapses whitespace: Spaces and newlines between tags are reduced.
  • Keeps behaviour: The page looks and works the same; only file size and readability change.

When to minify

  • Production builds: Minify before deploying to reduce payload size.
  • Email HTML: Some clients strip or alter formatting; minified HTML can be more predictable.
  • Not during development: Keep readable HTML while coding; minify only for output.

Tips

  • Always keep an unminified source; minification is one-way for readability.
  • Test the minified page to ensure nothing broke (e.g. inline scripts or conditional comments).

Our HTML Minifier runs in your browser. Paste your HTML and get a single-line minified version. Your code is never sent to our servers.

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