HTML Minifier

Compress HTML by removing safe whitespace and comments.

HTML252 characters

Remove comments

Conditional comments are always kept.

What does HTML Minifier do?

Reduce HTML size by collapsing whitespace between block elements and stripping comments, while leaving pre, textarea, script and style content untouched. The byte saving is reported so you can judge the benefit.

How to Use HTML Minifier

1
Paste your HTMLA full page or a fragment.
2
Set the optionsChoose whether to strip comments.
3
Copy the minified HTMLThe saving is shown above it.

Key Features

Collapses whitespace only where it is not rendered
Removes comments, with an option to keep conditional comments
pre, textarea, script and style content untouched
Original and minified sizes with the percentage saved
Estimated gzip size so you can see the real network benefit

Frequently Asked Questions

How much does minifying HTML save?

Typically 5–20% before compression, and considerably less after gzip, which already collapses repeated whitespace efficiently. It is a small optimisation, not a transformative one.

Is minifying HTML risky?

It can be if done naively, because whitespace between inline elements is rendered. This minifier only collapses whitespace in positions where it has no visual effect, and leaves preformatted content alone.

Should I remove comments?

Usually yes in production. Keep conditional comments if you still support very old Internet Explorer, and keep any comment your build or CMS relies on as a marker.

Should I minify by hand or in my build?

In your build. Minifying by hand means your source and deployed files diverge, which makes debugging harder. Use this tool for one-off files and inspection.