Free Online HTML Minifier
RunDev
Remove whitespace, comments, and unnecessary code from HTML to reduce file size.Updated 2026-03-16
FAQ
Does minifying HTML break my page?
No, minification only removes unnecessary whitespace and comments. The rendered output remains identical.
How much smaller will my HTML be?
Typically 10-30% smaller depending on formatting. Heavily commented or indented HTML sees the biggest gains.
Is my code sent to a server?
No, all minification runs entirely in your browser. Your code never leaves your machine.
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How to Use
- Review output with syntax highlighting
- Paste your code or data into the input
- Select formatting options
- Copy the formatted result
FAQ
Does it support large files?
Handles reasonably large inputs. Files over 10MB may take a few seconds depending on your device.
Does it validate input?
Yes, input is validated and clear error messages are shown for any issues.
What browsers are supported?
All modern browsers: Chrome, Firefox, Safari, Edge. Some features need recent versions.
Is the output production-ready?
Yes, generates clean, standards-compliant output suitable for production use.