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HTML Minifier — Compress HTML, Inline CSS & JS Online

Minify HTML with html-minifier-terser. Collapses whitespace, removes comments, inline CSS / JS minification. Size savings shown live.

Free No signup Client-side Privacy friendly Updated

Size:

Size: · saved %

Working…

How to use

  1. 1 Paste your HTML on the left.
  2. 2 Toggle whitespace collapse, comment removal, inline CSS / JS minification.
  3. 3 Click Minify — see size savings instantly.

Why use this tool

  • Powered by html-minifier-terser — the maintained successor to html-minifier.
  • Inline <style> blocks are passed through clean-css; inline <script> blocks through terser.
  • Library is lazy-loaded — page is light until you click Minify.
  • Side-by-side size comparison and direct file download.

Frequently asked questions

Will it break my HTML?

Conservative defaults keep attribute quotes, void-element tags, and DOCTYPE. Test before deploying to production templates.

How do I format it back?

Use the <a class="underline" href="/html-formatter">HTML Formatter</a> to pretty-print the minified output for inspection.

Does it minify SVG inside HTML?

Whitespace and comments inside SVG are collapsed, but element-specific SVG optimisation is not run — use SVGO separately for that.

What is HTML Minifier?

An HTML Minifier is a tool that reduces the size of HTML markup for faster page loads. Built on html-minifier-terser, it collapses whitespace, removes comments, and minifies inline CSS and JavaScript, while showing the size savings live. Running entirely in the browser, it minifies HTML client-side so the markup is never uploaded to a server.

Summary

HTML Minifier is a free 開発者 utility by Zerethon Tools. Minify HTML with html-minifier-terser. Collapses whitespace, removes comments, inline CSS / JS minification. Size savings shown live. Runs entirely in the browser — no signup, no upload.

Category
開発者
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. HTML Minifier runs entirely client-side — no server upload, no logging, no tracking of your input.

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