A collection of regularly updated benchmarks for HTML+ minifiers (context).
Two tests are run: One exclusively applying HTML minification (with the most aggressive settings that do not impact conformance), the other enabling all minification features the respective minifier offers (this is play—it’s not a fair comparison and may exceed project needs).
- 👩💻 Minifier user? Compare HTML minifiers by HTML minification effectiveness, by maximum effectiveness (all minification and tree-shaking options enabled), and by the respective processing times
- 🧑🏭 Minifier author? Add and configure your minifier and become a co-owner
- 💁 Innocent bystander? Please share observations and suggestions
| @swc/html | HTML Minifier Next | htmlcompressor.com | htmlnano | minify-html | minimize | |
|---|---|---|---|---|---|---|
| Last npm update |  |
 |
n/a |  |
 |
 |
| Socket health status | n/a | |||||
| GitHub sponsors |  |
 |
n/a | n/a | n/a | n/a |
| Site | Original Size (KB) | @swc/html | HTML Minifier Next | htmlcompressor.com | htmlnano | minify-html | minimize |
|---|---|---|---|---|---|---|---|
| Minifier Test | 31 | 26 (–17.2%) |
25 (–19.6%) |
26 (–17%) |
26 (–16.5%) |
25 (–19.2%) |
26 (–16.3%) |
| A List Apart | 63 | 59 (–5.8%) |
57 (–8.4%) |
58 (–7.2%) |
58 (–7.7%) |
57 (–8.4%) |
58 (–7.3%) |
| Apple | 243 | 231 (–5.1%) |
225 (–7.6%) |
229 (–5.8%) |
228 (–6.3%) |
227 (–6.9%) |
229 (–6.1%) |
| BBC | 835 | 830 (–0.6%) |
823 (–1.5%) |
n/a | 826 (–1%) |
823 (–1.4%) |
828 (–0.8%) |
| Bun | 283 | 272 (–3.8%) |
264 (–6.8%) |
278 (–1.7%) |
276 (–2.6%) |
273 (–3.4%) |
276 (–2.4%) |
| CERN | 301 | 289 (–3.8%) |
281 (–6.5%) |
n/a | 288 (–4.2%) |
287 (–4.7%) |
288 (–4.1%) |
| CSS-Tricks | 148 | 136 (–7.9%) |
134 (–9.8%) |
135 (–9.1%) |
134 (–9.5%) |
134 (–9.7%) |
135 (–9%) |
| DeepSeek | 147 | 146 (–0.6%) |
139 (–5.2%) |
146 (–0.8%) |
145 (–1.1%) |
146 (–0.9%) |
146 (–0.8%) |
| DIN | 254 | 183 (–28.3%) |
176 (–30.7%) |
184 (–27.8%) |
182 (–28.3%) |
180 (–29.1%) |
183 (–27.9%) |
| DLR | 565 | 561 (–0.6%) |
559 (–1%) |
n/a | 560 (–0.8%) |
559 (–1%) |
562 (–0.5%) |
| ECMAScript | 7421 | 7054 (–4.9%) |
6813 (–8.2%) |
n/a | 6929 (–6.6%) |
6952 (–6.3%) |
6983 (–5.9%) |
| EDRi | 84 | 78 (–7.7%) |
77 (–8.2%) |
78 (–6.6%) |
78 (–7.6%) |
77 (–8.1%) |
78 (–6.7%) |
| EFF | 53 | 49 (–8.1%) |
46 (–12.7%) |
49 (–7.9%) |
48 (–10.1%) |
47 (–11.6%) |
48 (–9.8%) |
| European Alternatives | 49 | 33 (–33.1%) |
33 (–33.9%) |
33 (–32.9%) |
33 (–33.1%) |
33 (–33.7%) |
33 (–33.1%) |
| FAZ | 1579 | 1528 (–3.2%) |
1451 (–8.1%) |
n/a | 1526 (–3.3%) |
1519 (–3.8%) |
1523 (–3.5%) |
| French Tech | 175 | 140 (–20%) |
139 (–20.7%) |
141 (–19.7%) |
140 (–20%) |
139 (–20.6%) |
141 (–19.8%) |
| Front-End Social | 43 | 41 (–4.1%) |
40 (–6.4%) |
42 (–3.4%) |
40 (–6.3%) |
40 (–6.4%) |
42 (–3.5%) |
| Frontend Dogma | 224 | 232 (+3.6%) |
224 (0%) |
223 (–0.2%) |
237 (+5.9%) |
224 (–0.1%) |
243 (+8.3%) |
| 80 | 123 (+54.7%) |
79 (–0.6%) |
79 (–0.3%) |
79 (–0.8%) |
79 (–0.5%) |
79 (–0.3%) |
|
| Ground News | 3480 | 3457 (–0.7%) |
3417 (–1.8%) |
n/a | 3461 (–0.5%) |
3455 (–0.7%) |
3466 (–0.4%) |
| HTML 3.2 | 123 | 119 (–3%) |
119 (–3%) |
121 (–1.2%) |
124 (+0.8%) |
119 (–3.2%) |
123 (+0.5%) |
| HTML Living Standard | 151 | 154 (+1.8%) |
150 (–0.6%) |
151 (–0.2%) |
155 (+2.6%) |
151 (–0.3%) |
157 (+3.8%) |
| IETF | 82 | 34 (–58.4%) |
32 (–61%) |
34 (–57.9%) |
33 (–59%) |
33 (–59.5%) |
34 (–58.4%) |
| Igalia | 43 | 34 (–21.4%) |
32 (–27.2%) |
34 (–22.5%) |
33 (–23%) |
33 (–23.5%) |
33 (–22.9%) |
| Ladybird | 30 | 28 (–3.9%) |
28 (–6.4%) |
28 (–5%) |
28 (–5.4%) |
28 (–5.7%) |
28 (–5%) |
| Leanpub | 348 | 344 (–1.1%) |
337 (–3%) |
n/a | 344 (–1.2%) |
341 (–1.9%) |
342 (–1.6%) |
| Legge Stanca | 17 | 12 (–28.5%) |
12 (–30.4%) |
12 (–27.3%) |
12 (–30%) |
12 (–30.2%) |
12 (–27.5%) |
| Mastodon | 43 | 41 (–4.1%) |
40 (–6.4%) |
41 (–3.4%) |
40 (–6.4%) |
40 (–6.4%) |
41 (–3.5%) |
| MDN | 119 | 71 (–40.2%) |
68 (–42.7%) |
73 (–38.8%) |
72 (–39.5%) |
69 (–41.4%) |
72 (–39.2%) |
| Mistral AI | 423 | 410 (–3.1%) |
339 (–20%) |
n/a | 422 (–0.3%) |
411 (–2.8%) |
423 (0%) |
| Mondoweiss | 406 | 401 (–1.1%) |
385 (–5%) |
n/a | 390 (–3.9%) |
389 (–4.1%) |
391 (–3.6%) |
| Mozilla | 47 | 37 (–21%) |
35 (–25.8%) |
37 (–22.2%) |
36 (–23.8%) |
35 (–26%) |
36 (–23%) |
| Nielsen Norman Group | 103 | 86 (–16.3%) |
85 (–17.3%) |
86 (–15.9%) |
87 (–15.5%) |
85 (–17%) |
87 (–15.5%) |
| Opera | 185 | 135 (–26.9%) |
132 (–28.6%) |
135 (–27.1%) |
134 (–27.4%) |
134 (–27.7%) |
134 (–27.5%) |
| OSCE | 172 | 145 (–16%) |
143 (–17.2%) |
145 (–15.9%) |
145 (–15.7%) |
142 (–17.3%) |
145 (–15.7%) |
| Scrum Guide | 34 | 31 (–8.9%) |
30 (–10.7%) |
32 (–7.3%) |
31 (–7.9%) |
31 (–10.1%) |
31 (–7.8%) |
| SELFHTML | 21 | 19 (–7.6%) |
17 (–17.4%) |
18 (–13.6%) |
18 (–14.6%) |
17 (–16.8%) |
18 (–14.2%) |
| SitePoint | 242 | 239 (–1.3%) |
238 (–1.5%) |
240 (–0.7%) |
240 (–0.9%) |
239 (–1.1%) |
240 (–0.7%) |
| Smashing Magazine | 310 | 311 (+0.2%) |
309 (–0.5%) |
n/a | 310 (–0.2%) |
309 (–0.4%) |
310 (0%) |
| Startup-Verband | 51 | 38 (–26.3%) |
36 (–29.3%) |
37 (–27.2%) |
37 (–27.7%) |
36 (–28.4%) |
37 (–27.1%) |
| TAZ | 432 | 407 (–5.7%) |
387 (–10.5%) |
n/a | 398 (–7.7%) |
397 (–8%) |
400 (–7.3%) |
| TetraLogical | 60 | 54 (–10.1%) |
54 (–10.5%) |
54 (–9.8%) |
54 (–9.8%) |
54 (–10.3%) |
54 (–9.8%) |
| TPGi | 177 | 162 (–8.5%) |
160 (–9.9%) |
162 (–8.5%) |
161 (–9.3%) |
160 (–9.6%) |
162 (–8.5%) |
| United Nations | 154 | 133 (–13.5%) |
128 (–16.6%) |
133 (–13.6%) |
131 (–14.5%) |
130 (–15.1%) |
132 (–13.8%) |
| UX Collective | 153 | 197 (+29%) |
149 (–2.2%) |
152 (–0.8%) |
151 (–1.3%) |
150 (–1.4%) |
149 (–2.6%) |
| Vivaldi | 91 | 83 (–8.8%) |
82 (–10.7%) |
83 (–9.5%) |
82 (–9.8%) |
82 (–10.8%) |
83 (–9.4%) |
| W3C | 52 | 42 (–18.4%) |
41 (–20.4%) |
42 (–18.7%) |
42 (–19%) |
42 (–19.9%) |
42 (–18.6%) |
| WordPress Blog | 221 | 203 (–8%) |
200 (–9.5%) |
205 (–7.5%) |
203 (–8.1%) |
202 (–8.8%) |
205 (–7.2%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 37/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 30 ms | 39 ms | 771 ms | 39 ms | 9 ms | 197 ms | |
| Average result (KB) | 424 | 405 (–4.5%) |
391 (–7.7%) |
414 (–2.4%) |
400 (–5.6%) |
399 (–5.9%) |
402 (–5.2%) |
| Site | Original Size (KB) | @swc/html | HTML Minifier Next | htmlcompressor.com | htmlnano | minify-html | minimize |
|---|---|---|---|---|---|---|---|
| Minifier Test | 31 | 24 (–23.3%) |
23 (–25.5%) |
24 (–22.9%) |
23 (–26.5%) |
23 (–25.3%) |
26 (–16.3%) |
| A List Apart | 63 | 57 (–9.1%) |
53 (–14.8%) |
56 (–10%) |
39 (–37.4%) |
55 (–11.7%) |
58 (–7.3%) |
| Apple | 243 | 231 (–5.2%) |
215 (–11.6%) |
229 (–5.8%) |
219 (–10.1%) |
227 (–6.9%) |
229 (–6.1%) |
| BBC | 835 | 786 (–5.8%) |
769 (–7.9%) |
n/a | 780 (–6.5%) |
780 (–6.6%) |
828 (–0.8%) |
| Bun | 283 | 272 (–3.9%) |
259 (–8.3%) |
278 (–1.7%) |
272 (–4%) |
273 (–3.4%) |
276 (–2.4%) |
| CERN | 301 | 273 (–9.1%) |
259 (–14%) |
n/a | 216 (–28%) |
272 (–9.7%) |
288 (–4.1%) |
| CSS-Tricks | 148 | 131 (–11.3%) |
119 (–19.3%) |
130 (–11.9%) |
103 (–30.6%) |
129 (–12.8%) |
135 (–9%) |
| DeepSeek | 147 | 141 (–4.1%) |
117 (–20.2%) |
141 (–4%) |
123 (–16.3%) |
141 (–4.2%) |
146 (–0.8%) |
| DIN | 254 | 176 (–30.8%) |
164 (–35.4%) |
177 (–30.6%) |
136 (–46.5%) |
175 (–31.2%) |
183 (–27.9%) |
| DLR | 565 | 530 (–6.1%) |
520 (–7.8%) |
n/a | 516 (–8.7%) |
523 (–7.5%) |
562 (–0.5%) |
| ECMAScript | 7421 | 7054 (–4.9%) |
6812 (–8.2%) |
n/a | 6928 (–6.6%) |
6952 (–6.3%) |
6983 (–5.9%) |
| EDRi | 84 | 75 (–11.2%) |
71 (–16%) |
76 (–9.6%) |
55 (–34.7%) |
74 (–11.3%) |
78 (–6.7%) |
| EFF | 53 | 47 (–10.9%) |
43 (–18.9%) |
48 (–10.2%) |
45 (–14.4%) |
46 (–12.6%) |
48 (–9.8%) |
| European Alternatives | 49 | 33 (–33.2%) |
31 (–37.7%) |
33 (–33%) |
31 (–37%) |
33 (–33.8%) |
33 (–33.1%) |
| FAZ | 1579 | 1458 (–7.7%) |
1396 (–11.5%) |
n/a | 1326 (–16%) |
1511 (–4.2%) |
1523 (–3.5%) |
| French Tech | 175 | 134 (–23.7%) |
129 (–26.6%) |
135 (–23.1%) |
59 (–66.6%) |
133 (–24.2%) |
141 (–19.8%) |
| Front-End Social | 43 | 41 (–5.2%) |
37 (–14.4%) |
41 (–3.7%) |
37 (–14.2%) |
40 (–6.7%) |
42 (–3.5%) |
| Frontend Dogma | 224 | 232 (+3.6%) |
217 (–3.3%) |
223 (–0.2%) |
229 (+2.3%) |
224 (–0.1%) |
243 (+8.3%) |
| 80 | 76 (–4.6%) |
75 (–5.3%) |
79 (–0.8%) |
64 (–19.7%) |
77 (–3.6%) |
79 (–0.3%) |
|
| Ground News | 3480 | 3242 (–6.8%) |
3167 (–9%) |
n/a | 3207 (–7.8%) |
3232 (–7.1%) |
3466 (–0.4%) |
| HTML 3.2 | 123 | 119 (–3.1%) |
118 (–3.4%) |
121 (–1.3%) |
123 (+0.6%) |
119 (–3.3%) |
123 (+0.5%) |
| HTML Living Standard | 151 | 154 (+1.8%) |
150 (–0.7%) |
151 (–0.3%) |
155 (+2.5%) |
151 (–0.3%) |
157 (+3.8%) |
| IETF | 82 | 34 (–58.7%) |
31 (–61.8%) |
34 (–58.1%) |
33 (–59.8%) |
33 (–59.7%) |
34 (–58.4%) |
| Igalia | 43 | 33 (–23%) |
31 (–29.6%) |
33 (–23.5%) |
32 (–25.6%) |
33 (–25%) |
33 (–22.9%) |
| Ladybird | 30 | 28 (–3.9%) |
27 (–7.7%) |
28 (–5%) |
25 (–14.1%) |
28 (–5.7%) |
28 (–5%) |
| Leanpub | 348 | 334 (–3.9%) |
318 (–8.6%) |
n/a | 325 (–6.6%) |
331 (–4.8%) |
342 (–1.6%) |
| Legge Stanca | 17 | 10 (–43.8%) |
9 (–46.5%) |
10 (–42.7%) |
9 (–46.7%) |
10 (–40.5%) |
12 (–27.5%) |
| Mastodon | 43 | 41 (–5.2%) |
37 (–14.4%) |
41 (–3.7%) |
37 (–14.3%) |
40 (–6.7%) |
41 (–3.5%) |
| MDN | 119 | 71 (–40.3%) |
67 (–43.8%) |
72 (–38.9%) |
55 (–53.7%) |
69 (–41.5%) |
72 (–39.2%) |
| Mistral AI | 423 | 410 (–3.2%) |
258 (–39.1%) |
n/a | 332 (–21.6%) |
411 (–2.9%) |
423 (0%) |
| Mondoweiss | 406 | 383 (–5.5%) |
369 (–8.9%) |
n/a | 363 (–10.6%) |
378 (–6.8%) |
391 (–3.6%) |
| Mozilla | 47 | 37 (–21%) |
32 (–31.6%) |
37 (–22.2%) |
33 (–29.4%) |
35 (–26%) |
36 (–23%) |
| Nielsen Norman Group | 103 | 85 (–17%) |
60 (–41.7%) |
86 (–16.6%) |
61 (–41%) |
85 (–17.6%) |
87 (–15.5%) |
| Opera | 185 | 131 (–29.5%) |
123 (–33.7%) |
135 (–27.3%) |
85 (–54%) |
130 (–30.1%) |
134 (–27.5%) |
| OSCE | 172 | 144 (–16%) |
135 (–21.3%) |
145 (–15.9%) |
137 (–20.7%) |
142 (–17.4%) |
145 (–15.7%) |
| Scrum Guide | 34 | 31 (–9%) |
30 (–10.9%) |
32 (–7.3%) |
31 (–8.3%) |
31 (–10.1%) |
31 (–7.8%) |
| SELFHTML | 21 | 18 (–14.2%) |
17 (–19.1%) |
18 (–14.4%) |
18 (–16%) |
17 (–17.6%) |
18 (–14.2%) |
| SitePoint | 242 | 230 (–5%) |
216 (–10.6%) |
232 (–4.2%) |
218 (–10%) |
230 (–4.9%) |
240 (–0.7%) |
| Smashing Magazine | 310 | 309 (–0.3%) |
306 (–1.2%) |
n/a | 293 (–5.4%) |
308 (–0.8%) |
310 (0%) |
| Startup-Verband | 51 | 37 (–26.4%) |
35 (–31.1%) |
37 (–27.3%) |
36 (–29.6%) |
36 (–28.6%) |
37 (–27.1%) |
| TAZ | 432 | 387 (–10.3%) |
361 (–16.4%) |
n/a | 378 (–12.4%) |
387 (–10.3%) |
400 (–7.3%) |
| TetraLogical | 60 | 54 (–10.3%) |
50 (–17%) |
54 (–9.9%) |
50 (–16.4%) |
54 (–10.5%) |
54 (–9.8%) |
| TPGi | 177 | 136 (–23.4%) |
133 (–25.1%) |
142 (–20%) |
117 (–34.2%) |
138 (–22.3%) |
162 (–8.5%) |
| United Nations | 154 | 129 (–16%) |
115 (–25.3%) |
125 (–18.4%) |
86 (–43.8%) |
127 (–17.5%) |
132 (–13.8%) |
| UX Collective | 153 | 143 (–6.5%) |
130 (–15.2%) |
151 (–1.4%) |
130 (–14.9%) |
141 (–7.7%) |
149 (–2.6%) |
| Vivaldi | 91 | 80 (–12%) |
73 (–20%) |
81 (–11.5%) |
64 (–29.8%) |
79 (–13.1%) |
83 (–9.4%) |
| W3C | 52 | 41 (–22%) |
37 (–28.3%) |
40 (–22.4%) |
38 (–26.9%) |
40 (–23.6%) |
42 (–18.6%) |
| WordPress Blog | 221 | 182 (–17.9%) |
171 (–22.7%) |
191 (–13.6%) |
153 (–30.9%) |
189 (–14.7%) |
205 (–7.2%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 37/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 35 ms | 61 ms | 1322 ms | 153 ms | 10 ms | 192 ms | |
| Average result (KB) | 424 | 392 (–7.6%) |
373 (–11.9%) |
412 (–2.9%) |
371 (–12.4%) |
389 (–8.1%) |
402 (–5.2%) |
Benchmarks last updated: Jul 20, 2026
- Minifiers:
- htmlcompressor.com incorrectly converts no-break spaces to spaces which can give an impression of greater effectiveness (last confirmed Apr 4, 2026).
- minify-html “invalidates” markup, notably by removing spaces in doctypes (
<!doctypehtml>) (last confirmed Apr 4, 2026). - Minimize only minifies HTML.
- HTML Minifier Terser is currently not included due to issues around whitespace collapsing and removal of code using modern CSS features, issues which appeared to distort the data.
- Calculation:
- Calculations are done based on bytes, which are used to compare effectiveness.
- Failed sites are not excluded from the calculation for the average result, but counted as unminified. This avoids test failures advantaging the respective minifier.
- Benchmarks are currently run manually (on a 2024 Apple Mac Mini) but may be automated in the future.