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 | 64 | 60 (–6.4%) |
58 (–8.9%) |
59 (–7.2%) |
59 (–8.2%) |
58 (–8.9%) |
59 (–7.3%) |
| Apple | 244 | 232 (–5.1%) |
225 (–7.8%) |
230 (–5.8%) |
229 (–6.3%) |
228 (–6.9%) |
230 (–6.1%) |
| BBC | 701 | 697 (–0.7%) |
691 (–1.5%) |
n/a | 695 (–0.9%) |
692 (–1.4%) |
696 (–0.8%) |
| Bun | 461 | 451 (–2.2%) |
441 (–4.2%) |
n/a | 454 (–1.5%) |
452 (–2%) |
455 (–1.3%) |
| CERN | 151 | 93 (–38.3%) |
82 (–45.8%) |
96 (–36.7%) |
92 (–39.1%) |
92 (–39.5%) |
93 (–38.5%) |
| CSS-Tricks | 168 | 156 (–7.5%) |
153 (–9.1%) |
155 (–8%) |
153 (–8.8%) |
153 (–9%) |
155 (–8.1%) |
| DeepSeek | 105 | 104 (–0.7%) |
98 (–7.1%) |
104 (–1.1%) |
104 (–1.4%) |
104 (–1.2%) |
104 (–1.1%) |
| DIN | 253 | 182 (–28.2%) |
176 (–30.6%) |
183 (–27.7%) |
182 (–28%) |
180 (–29%) |
183 (–27.8%) |
| DLR | 547 | 544 (–0.6%) |
541 (–1%) |
n/a | 543 (–0.8%) |
542 (–1%) |
544 (–0.5%) |
| ECMAScript | 7237 | 6880 (–4.9%) |
6645 (–8.2%) |
n/a | 6757 (–6.6%) |
6780 (–6.3%) |
6810 (–5.9%) |
| EDRi | 84 | 77 (–7.6%) |
77 (–8.2%) |
78 (–6.6%) |
77 (–7.5%) |
77 (–8.1%) |
78 (–6.7%) |
| EFF | 55 | 50 (–8%) |
48 (–12.5%) |
50 (–7.7%) |
49 (–9.9%) |
48 (–11.4%) |
49 (–9.6%) |
| European Alternatives | 49 | 33 (–33.1%) |
33 (–33.9%) |
33 (–32.9%) |
33 (–33.1%) |
33 (–33.7%) |
33 (–33.1%) |
| FAZ | 1389 | 1347 (–3%) |
1329 (–4.3%) |
n/a | 1344 (–3.2%) |
1335 (–3.8%) |
1341 (–3.4%) |
| French Tech | 154 | 134 (–12.9%) |
133 (–13.9%) |
134 (–13%) |
134 (–13.2%) |
133 (–13.9%) |
134 (–13.1%) |
| Front-End Social | 36 | 34 (–3.7%) |
34 (–5.6%) |
35 (–3.1%) |
34 (–5.5%) |
34 (–5.6%) |
35 (–3.1%) |
| Frontend Dogma | 221 | 229 (+3.6%) |
221 (0%) |
220 (–0.2%) |
234 (+6%) |
220 (0%) |
239 (+8.3%) |
| 79 | 124 (+57.6%) |
78 (–0.6%) |
79 (–0.3%) |
78 (–0.8%) |
79 (–0.5%) |
79 (–0.3%) |
|
| Ground News | 1804 | 1780 (–1.3%) |
1741 (–3.5%) |
n/a | 1787 (–0.9%) |
1779 (–1.4%) |
1790 (–0.8%) |
| HTML 3.2 | 123 | 119 (–3%) |
119 (–3%) |
121 (–1.2%) |
124 (+0.9%) |
119 (–3.2%) |
123 (+0.5%) |
| HTML Living Standard | 149 | 152 (+1.8%) |
148 (–0.6%) |
149 (–0.2%) |
153 (+2.6%) |
149 (–0.3%) |
155 (+3.8%) |
| IETF | 83 | 34 (–58.7%) |
32 (–61.2%) |
35 (–58.2%) |
34 (–59.3%) |
34 (–59.8%) |
34 (–58.7%) |
| Igalia | 49 | 37 (–24.1%) |
34 (–29.4%) |
37 (–25.1%) |
36 (–25.6%) |
36 (–26%) |
36 (–25.5%) |
| Ladybird | 24 | 23 (–4.6%) |
23 (–7.3%) |
23 (–5.5%) |
23 (–6.1%) |
23 (–6.6%) |
23 (–5.6%) |
| Leanpub | 338 | 334 (–1.3%) |
325 (–3.8%) |
n/a | 333 (–1.4%) |
331 (–2.1%) |
332 (–1.8%) |
| Legge Stanca | 17 | 12 (–28.5%) |
12 (–30.4%) |
12 (–27.3%) |
12 (–29.7%) |
12 (–30.2%) |
12 (–27.5%) |
| Mastodon | 34 | 33 (–3.5%) |
32 (–5.3%) |
33 (–2.9%) |
32 (–5.2%) |
32 (–5.3%) |
33 (–3%) |
| MDN | 117 | 71 (–39.2%) |
68 (–41.7%) |
73 (–37.8%) |
73 (–38%) |
70 (–40.4%) |
72 (–38.2%) |
| Mistral AI | 350 | 341 (–2.5%) |
339 (–3%) |
n/a | 345 (–1.3%) |
341 (–2.6%) |
346 (–1.1%) |
| Mondoweiss | 400 | 396 (–1.2%) |
381 (–4.9%) |
n/a | 385 (–3.9%) |
384 (–4.2%) |
387 (–3.4%) |
| Mozilla | 47 | 37 (–21%) |
35 (–25.9%) |
37 (–22.3%) |
36 (–23.9%) |
35 (–26.1%) |
36 (–23.1%) |
| Nielsen Norman Group | 100 | 84 (–16.2%) |
83 (–17.3%) |
84 (–15.9%) |
85 (–15.5%) |
83 (–17%) |
85 (–15.5%) |
| Opera | 231 | 178 (–22.9%) |
173 (–25.1%) |
176 (–23.8%) |
177 (–23.5%) |
175 (–24.4%) |
177 (–23.6%) |
| OSCE | 177 | 149 (–15.7%) |
147 (–16.9%) |
149 (–15.7%) |
150 (–15.5%) |
147 (–17%) |
150 (–15.5%) |
| Scrum Guide | 34 | 31 (–8.9%) |
30 (–10.7%) |
32 (–7.3%) |
31 (–7.9%) |
31 (–10.1%) |
31 (–7.8%) |
| SELFHTML | 21 | 20 (–7.5%) |
18 (–17.3%) |
18 (–13.6%) |
18 (–14.4%) |
18 (–16.7%) |
18 (–14.1%) |
| SitePoint | 233 | 230 (–1.3%) |
229 (–1.5%) |
231 (–0.7%) |
231 (–0.9%) |
230 (–1.1%) |
231 (–0.7%) |
| Smashing Magazine | 283 | 283 (+0.2%) |
281 (–0.6%) |
283 (–0.1%) |
282 (–0.2%) |
281 (–0.4%) |
283 (+0%) |
| Startup-Verband | 46 | 34 (–26.1%) |
33 (–29%) |
34 (–26.5%) |
34 (–26.9%) |
33 (–27.9%) |
34 (–26.2%) |
| TAZ | 413 | 389 (–5.6%) |
370 (–10.4%) |
n/a | 380 (–7.9%) |
379 (–8.1%) |
382 (–7.4%) |
| TetraLogical | 61 | 55 (–10%) |
54 (–10.3%) |
55 (–9.7%) |
55 (–9.7%) |
54 (–10.2%) |
55 (–9.7%) |
| TPGi | 181 | 166 (–8.2%) |
163 (–9.7%) |
166 (–8.3%) |
164 (–9.2%) |
163 (–9.4%) |
165 (–8.3%) |
| United Nations | 152 | 131 (–13.6%) |
127 (–16.7%) |
131 (–13.7%) |
130 (–14.5%) |
129 (–15.2%) |
131 (–13.9%) |
| UX Collective | 96 | 137 (+42.6%) |
94 (–2.6%) |
95 (–0.8%) |
95 (–1.2%) |
95 (–1.4%) |
95 (–0.9%) |
| Vivaldi | 93 | 85 (–8.6%) |
84 (–10.5%) |
85 (–9.2%) |
85 (–9.5%) |
84 (–10.5%) |
85 (–9.2%) |
| W3C | 51 | 41 (–18.7%) |
40 (–20.7%) |
41 (–19%) |
41 (–19.4%) |
40 (–20.3%) |
41 (–18.9%) |
| WordPress Blog | 206 | 191 (–7.4%) |
188 (–9%) |
192 (–6.8%) |
191 (–7.4%) |
189 (–8.3%) |
193 (–6.6%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 38/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 30 ms | 43 ms | 773 ms | 35 ms | 8 ms | 189 ms | |
| Average result (KB) | 374 | 355 (–5.1%) |
344 (–8.1%) |
363 (–2.9%) |
350 (–6.4%) |
349 (–6.7%) |
352 (–5.9%) |
| 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 | 64 | 58 (–9.6%) |
54 (–15.1%) |
58 (–10%) |
40 (–37%) |
56 (–12%) |
59 (–7.3%) |
| Apple | 244 | 232 (–5.2%) |
215 (–11.9%) |
230 (–5.9%) |
220 (–10.1%) |
227 (–7%) |
230 (–6.1%) |
| BBC | 701 | 660 (–5.9%) |
645 (–8%) |
n/a | 656 (–6.5%) |
655 (–6.7%) |
696 (–0.8%) |
| Bun | 461 | 435 (–5.7%) |
420 (–8.8%) |
n/a | 374 (–18.9%) |
436 (–5.3%) |
455 (–1.3%) |
| CERN | 151 | 93 (–38.3%) |
81 (–46.5%) |
96 (–36.7%) |
90 (–40.3%) |
91 (–39.9%) |
93 (–38.5%) |
| CSS-Tricks | 168 | 145 (–13.5%) |
134 (–20.4%) |
147 (–12.4%) |
114 (–32.4%) |
145 (–13.5%) |
155 (–8.1%) |
| DeepSeek | 105 | 100 (–5.1%) |
84 (–19.9%) |
100 (–5.1%) |
90 (–14.4%) |
99 (–5.4%) |
104 (–1.1%) |
| DIN | 253 | 175 (–30.8%) |
164 (–35.3%) |
176 (–30.5%) |
136 (–46.3%) |
174 (–31.1%) |
183 (–27.8%) |
| DLR | 547 | 514 (–6%) |
504 (–7.8%) |
n/a | 500 (–8.7%) |
506 (–7.4%) |
544 (–0.5%) |
| ECMAScript | 7237 | 6880 (–4.9%) |
6644 (–8.2%) |
n/a | 6756 (–6.6%) |
6780 (–6.3%) |
6810 (–5.9%) |
| EDRi | 84 | 74 (–11.1%) |
70 (–15.8%) |
76 (–9.5%) |
55 (–34.6%) |
74 (–11.3%) |
78 (–6.7%) |
| EFF | 55 | 49 (–10.7%) |
44 (–18.6%) |
49 (–9.9%) |
47 (–14.1%) |
48 (–12.4%) |
49 (–9.6%) |
| European Alternatives | 49 | 33 (–33.2%) |
31 (–37.7%) |
33 (–33%) |
31 (–37%) |
33 (–33.8%) |
33 (–33.1%) |
| FAZ | 1389 | 1340 (–3.5%) |
1284 (–7.5%) |
n/a | 1213 (–12.7%) |
1329 (–4.3%) |
1341 (–3.4%) |
| French Tech | 154 | 128 (–17%) |
124 (–20%) |
129 (–16.4%) |
53 (–65.5%) |
127 (–17.5%) |
134 (–13.1%) |
| Front-End Social | 36 | 34 (–3.7%) |
31 (–13.9%) |
35 (–3.1%) |
31 (–13.8%) |
34 (–5.6%) |
35 (–3.1%) |
| Frontend Dogma | 221 | 229 (+3.6%) |
213 (–3.4%) |
220 (–0.2%) |
225 (+2.2%) |
220 (0%) |
239 (+8.3%) |
| 79 | 75 (–5%) |
74 (–5.7%) |
78 (–0.8%) |
63 (–19.9%) |
76 (–3.7%) |
79 (–0.3%) |
|
| Ground News | 1804 | 1689 (–6.3%) |
1615 (–10.5%) |
n/a | 1663 (–7.8%) |
1687 (–6.5%) |
1790 (–0.8%) |
| HTML 3.2 | 123 | 119 (–3.1%) |
118 (–3.4%) |
121 (–1.3%) |
123 (+0.7%) |
119 (–3.3%) |
123 (+0.5%) |
| HTML Living Standard | 149 | 152 (+1.8%) |
148 (–0.7%) |
149 (–0.3%) |
153 (+2.5%) |
149 (–0.3%) |
155 (+3.8%) |
| IETF | 83 | 34 (–59%) |
32 (–62%) |
35 (–58.3%) |
33 (–60%) |
33 (–59.9%) |
34 (–58.7%) |
| Igalia | 49 | 36 (–25.4%) |
33 (–31.8%) |
36 (–26%) |
35 (–28.2%) |
35 (–27.4%) |
36 (–25.5%) |
| Ladybird | 24 | 23 (–4.6%) |
22 (–8.7%) |
23 (–5.5%) |
23 (–7.7%) |
23 (–6.6%) |
23 (–5.6%) |
| Leanpub | 338 | 323 (–4.3%) |
306 (–9.5%) |
n/a | 314 (–7%) |
321 (–5.2%) |
332 (–1.8%) |
| Legge Stanca | 17 | 10 (–43.8%) |
9 (–46.5%) |
10 (–42.7%) |
9 (–46.5%) |
10 (–40.5%) |
12 (–27.5%) |
| Mastodon | 34 | 32 (–4.9%) |
29 (–15.2%) |
33 (–3.3%) |
29 (–15.1%) |
32 (–5.7%) |
33 (–3%) |
| MDN | 117 | 71 (–39.3%) |
67 (–42.8%) |
73 (–37.8%) |
55 (–52.9%) |
70 (–40.5%) |
72 (–38.2%) |
| Mistral AI | 350 | 318 (–9.2%) |
302 (–13.7%) |
n/a | 309 (–11.6%) |
317 (–9.5%) |
346 (–1.1%) |
| Mondoweiss | 400 | 377 (–5.8%) |
364 (–9%) |
n/a | 358 (–10.7%) |
373 (–6.9%) |
387 (–3.4%) |
| Mozilla | 47 | 37 (–21%) |
32 (–31.7%) |
37 (–22.3%) |
33 (–29.6%) |
35 (–26.1%) |
36 (–23.1%) |
| Nielsen Norman Group | 100 | 83 (–17%) |
59 (–41.2%) |
84 (–16.5%) |
60 (–40.5%) |
83 (–17.5%) |
85 (–15.5%) |
| Opera | 231 | 173 (–25%) |
147 (–36.6%) |
176 (–24%) |
109 (–52.7%) |
170 (–26.3%) |
177 (–23.6%) |
| OSCE | 177 | 149 (–15.7%) |
140 (–21%) |
149 (–15.7%) |
141 (–20.4%) |
147 (–17.2%) |
150 (–15.5%) |
| Scrum Guide | 34 | 31 (–9%) |
30 (–10.9%) |
32 (–7.3%) |
31 (–8.3%) |
31 (–10.1%) |
31 (–7.8%) |
| SELFHTML | 21 | 18 (–14.1%) |
17 (–19%) |
18 (–14.3%) |
18 (–15.8%) |
18 (–17.5%) |
18 (–14.1%) |
| SitePoint | 233 | 221 (–5%) |
208 (–10.6%) |
231 (–1%) |
210 (–10%) |
222 (–4.8%) |
231 (–0.7%) |
| Smashing Magazine | 283 | 282 (–0.3%) |
279 (–1.4%) |
282 (–0.1%) |
269 (–5%) |
280 (–0.9%) |
283 (+0%) |
| Startup-Verband | 46 | 34 (–26.2%) |
32 (–30.6%) |
34 (–26.6%) |
33 (–28.6%) |
33 (–28.1%) |
34 (–26.2%) |
| TAZ | 413 | 370 (–10.5%) |
345 (–16.5%) |
n/a | 360 (–12.8%) |
369 (–10.6%) |
382 (–7.4%) |
| TetraLogical | 61 | 54 (–10.2%) |
50 (–16.8%) |
55 (–9.9%) |
51 (–16.4%) |
54 (–10.4%) |
55 (–9.7%) |
| TPGi | 181 | 135 (–24.9%) |
132 (–26.6%) |
142 (–21.6%) |
117 (–35.4%) |
141 (–21.9%) |
165 (–8.3%) |
| United Nations | 152 | 128 (–16.1%) |
113 (–25.5%) |
124 (–18.5%) |
85 (–44.1%) |
125 (–17.7%) |
131 (–13.9%) |
| UX Collective | 96 | 89 (–7.1%) |
87 (–9.4%) |
91 (–5.1%) |
88 (–8.8%) |
89 (–7.7%) |
95 (–0.9%) |
| Vivaldi | 93 | 82 (–11.9%) |
75 (–19.7%) |
83 (–11%) |
70 (–25.2%) |
82 (–12.5%) |
85 (–9.2%) |
| W3C | 51 | 39 (–22.4%) |
36 (–28.7%) |
39 (–22.8%) |
37 (–27.3%) |
38 (–24.1%) |
41 (–18.9%) |
| WordPress Blog | 206 | 169 (–17.9%) |
160 (–22.5%) |
179 (–13.2%) |
141 (–31.7%) |
177 (–14.4%) |
193 (–6.6%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 38/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 35 ms | 65 ms | 1323 ms | 140 ms | 11 ms | 190 ms | |
| Average result (KB) | 374 | 345 (–7.7%) |
330 (–11.8%) |
361 (–3.5%) |
327 (–12.7%) |
342 (–8.6%) |
352 (–5.9%) |
Benchmarks last updated: May 1, 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.