Updated: 2026-03-01
This benchmark measures how well different tools minify real-world HTML pages. For every URL, the page is fetched and the same source HTML is passed to each minifier. Each minifier is run with aggressive settings, including CSS/JS/SVG optimization when supported. Results are reported as minification rate (percentage size reduction vs the original HTML). Higher is better.
| Website | Source (KB) | html-minifier-terser | html-minifier-next | htmlnano | minify | minify-html | swc-html |
|---|---|---|---|---|---|---|---|
| alistapart.com | 63 | 7.6% | 11.5% | 34.5% | 11.1% | 8.7% | 11.5% |
| developer.mozilla.org | 109 | 37.9% | 41.6% | 52.7% | 40.1% | 40.0% | 40.5% |
| en.wikipedia.org | 227 | 4.4% | 7.3% | 7.2% | 6.0% | 5.9% | 6.2% |
| css-tricks.com | 153 | 8.9% | 22.1% | 26.1% | 12.0% | 9.0% | 12.1% |
| stackoverflow.blog | 141 | 3.7% | 7.2% | 6.8% | 4.3% | 4.5% | 5.1% |
| edri.org | 80 | 7.7% | 13.7% | 30.7% | 12.3% | 8.2% | 12.8% |
| html.spec.whatwg.org | 149 | -3.9% | 0.6% | -2.6% | 0.3% | 0.2% | 1.5% |
| leanpub.com | 355 | 1.2% | 8.3% | 6.6% | 4.8% | 1.9% | 5.2% |
| home.cern | 151 | 37.1% | 46.4% | 40.2% | 38.9% | 39.5% | 40.3% |
| lafrenchtech.gouv.fr | 152 | 13.2% | 17.8% | 64.1% | 16.9% | 13.8% | 17.5% |
| mastodon.social | 39 | 3.3% | 12.0% | 14.3% | 5.8% | 5.9% | 7.6% |
| eff.org | 56 | 8.3% | 13.9% | 11.8% | 12.7% | 10.7% | 12.6% |
| apple.com | 225 | 8.6% | 13.4% | 11.5% | 10.3% | 9.5% | 9.8% |
| un.org | 150 | 14.3% | 22.7% | 41.6% | 20.1% | 15.2% | 17.5% |
| w3.org | 51 | 18.9% | 24.3% | 23.2% | 24.2% | 20.2% | 23.9% |
| bbc.co.uk | 751 | 0.8% | 6.8% | 5.9% | 4.8% | 1.3% | 6.1% |
| sitepoint.com | 233 | 0.7% | 10.1% | 9.7% | 6.2% | 1.0% | 5.6% |
| weather.com | 1089 | 0.2% | 8.4% | 7.8% | 8.0% | 0.6% | 8.3% |
| github.com | 548 | 3.0% | 17.3% | 16.6% | 7.3% | 5.8% | 6.3% |
| faz.net | 1389 | 3.3% | 5.5% | 10.5% | 4.5% | 3.6% | 4.5% |
| tc39.es | 7308 | 8.5% | 11.1% | 9.3% | 9.4% | 9.2% | 10.9% |
| Avg. minify rate | 8.9% | 15.3% | 20.4% | 12.4% | 10.2% | 12.7% |
New HTML minifiers are welcome! Please submit a PR to add a new minifier to the benchmark, or open an issue to request it.
Run the benchmark locally:
npm install --omit=dev
npm startAfter that README.md will be updated with the new benchmark data.
README.md is generated dynamically from README.template.md. So don't alter it.
- https://github.com/j9t/minifier-benchmarks — by html-minifier-next maintainer