HTML Minifier
Minify and pretty-print HTML
Free forever — no sign-up, nothing uploaded. Files never leave your device.
HTML Minifier
Minify and pretty-print HTML
Drop your file here
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Browse filesdocument.pdf
1.2 MB
report.pdf
860 KB
100% private
Nothing is uploaded — everything runs in your browser.
Free forever
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Local processing
Processing time depends on your input and device.
About this tool
Strip comments and whitespace from HTML or reformat messy markup into indented structure.
The HTML Minifier compresses your HTML files by stripping unnecessary whitespace, removing redundant attributes, shortening boolean attributes, and optimizing tag structures — reducing file sizes by 10–40% without altering the rendered output. It's the go-to tool for front-end developers preparing HTML for production deployment where every kilobyte impacts load time and Core Web Vitals scores.
Beyond simple whitespace removal, this minifier intelligently collapses optional tags, removes comments (with an option to preserve critical ones), shortens class and ID names when safe, and optimizes attribute ordering for minimal output size. The tool provides a clear before/after comparison showing exact byte savings and compression percentage so you can quantify the impact.
All processing happens in your browser with zero server uploads. Sensitive HTML containing embedded API keys, internal URLs, or proprietary markup never leaves your machine — a critical requirement for enterprise teams and security-conscious organizations.
Key features
Everything you get with HTML Minifier — no premium upsell.
Intelligent whitespace and comment removal with configurable options
Boolean attribute shortening (e.g., disabled="disabled" to disabled)
Optional tag collapsing and redundant attribute stripping
Real-time before/after size comparison with compression percentage
Option to preserve critical comments and conditional comments
Fully client-side — HTML never uploaded to any server
How to use HTML Minifier
Follow the steps below to use the tool.
- 1
Paste or Upload HTML
Input your HTML source code by pasting it into the editor or dragging a file onto the drop zone.
- 2
Configure Options
Toggle settings like comment removal, whitespace collapsing, and boolean attribute shortening to match your project's needs.
- 3
Minify
Click the minify button to produce the compressed output. The tool shows the original and minified sizes with savings.
- 4
Copy or Download
Copy the minified HTML to your clipboard or download it as a .html file ready for production deployment.
Still free, still private — your files never leave your device.
Launch HTML MinifierFrequently asked questions
Quick answers before you launch the tool.
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