HTML Minifier & Beautifier — Free Online (No Uploads)

Minify for compact size or beautify for readability—fully client-side for privacy.

Input & Options

Input: 0 B Output: 0 B Saving: —

Output

Tip: Ctrl/Cmd + Enter runs Minify. Tabs indent inside the input box.

About this tool

This HTML Minifier & Beautifier runs entirely in your browser—no uploads, no tracking, and no external APIs. Use Minify to remove comments and unnecessary whitespace for faster load times, or Beautify to pretty-print your markup for review and code reviews. For safety, the processor doesn’t alter content inside <script>, <style>, <pre>, or <textarea> blocks.

Options in brief

  • Remove comments – Strips HTML comments (<!-- ... -->) with optional protection for legacy IE conditionals.
  • Collapse whitespace – Reduces redundant spaces/newlines, while preserving protected blocks.
  • Trim attribute spaces – Removes padding around equals and inside quoted attribute values (conservative).
  • Keep line breaks – Leaves single newlines between common block-level elements when minifying.

Keyboard shortcut: Ctrl/Cmd + Enter runs Minify. Your last input persists locally so you can pick up where you left off.

FAQ

Does any HTML I paste get uploaded?

No. This tool runs entirely in your browser. Nothing is sent to any server.

Will minifying change what my page looks like?

Minification removes comments and collapses unnecessary whitespace between tags but preserves content inside <script>, <style>, <pre>, and <textarea>. Your rendered page should look the same.

Can I use it for email templates?

Yes. Minifying can reduce email size and improve delivery speed, but always test the result across clients to ensure formatting is preserved.

5 Fun Facts about Minifying HTML

Whitespace is expensive (over HTTP)

HTML compresses well, but extra spaces still count before gzip/brotli—trimming can shave dozens of KB on template-heavy pages.

Free wins

Script/style are hands-off

Safe minifiers avoid touching <script>, <style>, <pre>, and <textarea> blocks to prevent breaking content.

Preserve islands

Comments can leak secrets

Stripping comments removes TODOs, keys, or internal notes that sometimes sneak into prod builds.

Quiet logs

Conditional comments still linger

Legacy IE conditionals (<!--[if IE]>) are left intact by many tools. Check the “protect conditionals” option if you rely on them.

Old IE quirks

Pretty-print aids audits

Beautifying before code review can surface mismatched tags and nested layout bugs faster than reading minified blobs.

Human-friendly

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