HTML Minifier
Strip comments and whitespace from HTML — runs in your browser
Input HTML
Minified
Original
Minified
Saved
HTML Minifier — Complete Guide & Instructions
MakeCard HTML Minifier shrinks HTML markup by stripping comments and collapsing whitespace — the quick win for page-weight reduction before deployment. Paste code into the input pane and the minified version appears beside it in real time, with stats showing original size, minified size, and percentage saved. An optional "Keep HTML comments" toggle preserves <!-- --> blocks for licenses or conditional comments you still need.
How to Use HTML Minifier
- 1 Paste your HTML into the "Input HTML" pane — or click "Load sample" to try it instantly.
- 2 Tick "Keep HTML comments" if you need to preserve license banners or conditional comments.
- 3 Watch the "Minified" output update live on the right.
- 4 Check the stats bar: Original chars → Minified chars → % Saved.
- 5 Click "Copy" to grab the minified markup for your production file.
Key Features & Capabilities
- Strips HTML comments (optional keep-comments mode for licenses/IE conditionals).
- Collapses whitespace between tags and redundant indentation.
- Live minification — output updates as you paste or edit.
- Real size stats: original, minified, and percentage saved.
- One-click copy of the result.
- Sample loader for instant testing.
- Fully client-side — markup never leaves the browser.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Input | Any HTML markup, pasted or sample |
| Removals | Comments (optional), inter-tag whitespace, extra indentation |
| Stats | Original chars, minified chars, percent saved |
| Processing | In-browser, no upload |
Practical Everyday Use Cases
- Slimming static HTML pages before uploading to hosting.
- Compressing HTML email templates to dodge size limits and clipping.
- Trimming generated markup before embedding it in another system.
- Reducing bytes on landing pages where every kilobyte affects load speed.
- Stripping developer comments from production-facing markup.
Pro Tips for Best Results
- Keep comments on when your HTML contains IE conditional comments or third-party license notices — they are functional, not cosmetic.
- Pair with CSS and JS minifiers for the full page-weight reduction.
- Do not minify code you still need to read — keep a formatted source copy in version control.
- Savings of 5–15% are typical on well-indented HTML; larger gains come from removing inline comments.
Common Problems & Solutions
CSS relying on whitespace between inline-block elements can shift when whitespace is removed — keep one space in those spots or switch to flexbox.
Enable the "Keep HTML comments" toggle is off by default — if you still see comments, they may be inside script/style blocks which are preserved intentionally.
Privacy & Security
100% Client-Side Execution
Minification happens entirely in your browser — your markup is never uploaded or stored.
Frequently Asked Questions
Everything you need to know about using HTML Minifier
It removes comments, extra whitespace, and line breaks between tags to reduce file size — the page looks identical but downloads faster.
Marginally — smaller HTML improves page load speed and Core Web Vitals, which are ranking factors, though the effect is modest compared to image optimization.
Rarely — standard minification preserves content. The known edge case is CSS that depends on whitespace between inline-block elements.
Typically 5–15% on readable, indented HTML — more when the source contains heavy comments. The stats bar shows your exact savings.
Related FreeToolsBazaar Tools
Ready to Use HTML Minifier?
100% free, browser-based, and private. No installation, registration, or file upload to external servers required.
Start Using HTML Minifier