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 | 60 (–5.7%) |
58 (–8.3%) |
59 (–7.2%) |
58 (–7.6%) |
58 (–8.3%) |
59 (–7.2%) |
| Apple | 253 | 240 (–5%) |
234 (–7.6%) |
239 (–5.7%) |
237 (–6.2%) |
236 (–6.8%) |
238 (–5.9%) |
| BBC | 704 | 700 (–0.7%) |
694 (–1.5%) |
n/a | 698 (–1%) |
694 (–1.4%) |
698 (–0.9%) |
| Bun | 461 | 451 (–2.2%) |
441 (–4.2%) |
n/a | 454 (–1.5%) |
452 (–2%) |
455 (–1.3%) |
| CERN | 286 | 274 (–3.9%) |
267 (–6.7%) |
274 (–4.2%) |
273 (–4.3%) |
272 (–4.7%) |
274 (–4.2%) |
| CSS-Tricks | 166 | 154 (–7.2%) |
152 (–8.8%) |
153 (–8.1%) |
152 (–8.5%) |
152 (–8.7%) |
153 (–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%) |
175 (–30.6%) |
183 (–27.7%) |
182 (–28%) |
179 (–29%) |
182 (–27.8%) |
| DLR | 541 | 538 (–0.6%) |
535 (–1%) |
n/a | 537 (–0.8%) |
536 (–1%) |
538 (–0.5%) |
| ECMAScript | 7236 | 6879 (–4.9%) |
6645 (–8.2%) |
n/a | 6757 (–6.6%) |
6779 (–6.3%) |
6809 (–5.9%) |
| EDRi | 84 | 77 (–7.6%) |
77 (–8.2%) |
78 (–6.6%) |
77 (–7.5%) |
77 (–8.1%) |
78 (–6.7%) |
| EFF | 54 | 49 (–8%) |
47 (–12.9%) |
50 (–7.8%) |
48 (–10%) |
48 (–11.6%) |
49 (–9.7%) |
| European Alternatives | 49 | 33 (–33.1%) |
33 (–33.9%) |
33 (–32.9%) |
33 (–33.1%) |
33 (–33.7%) |
33 (–33.1%) |
| FAZ | 1487 | 1440 (–3.2%) |
1367 (–8.1%) |
n/a | 1438 (–3.3%) |
1432 (–3.7%) |
1435 (–3.5%) |
| French Tech | 167 | 136 (–18.6%) |
135 (–19.2%) |
136 (–18.3%) |
136 (–18.5%) |
135 (–19.1%) |
136 (–18.4%) |
| Front-End Social | 36 | 34 (–3.7%) |
34 (–5.6%) |
35 (–3.1%) |
34 (–5.5%) |
34 (–5.6%) |
35 (–3.1%) |
| Frontend Dogma | 223 | 231 (+3.6%) |
223 (0%) |
223 (–0.2%) |
236 (+5.9%) |
223 (0%) |
242 (+8.3%) |
| 79 | 122 (+54.7%) |
78 (–0.6%) |
79 (–0.3%) |
78 (–0.8%) |
78 (–0.6%) |
79 (–0.3%) |
|
| Ground News | 2099 | 2076 (–1.1%) |
2037 (–3%) |
n/a | 2082 (–0.8%) |
2074 (–1.2%) |
2085 (–0.7%) |
| HTML 3.2 | 123 | 119 (–3%) |
119 (–3%) |
121 (–1.2%) |
124 (+0.9%) |
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 | 83 | 34 (–58.6%) |
32 (–61.2%) |
35 (–58.1%) |
34 (–59.2%) |
34 (–59.7%) |
34 (–58.6%) |
| Igalia | 43 | 34 (–21.6%) |
31 (–27.5%) |
33 (–22.7%) |
33 (–23.1%) |
33 (–23.7%) |
33 (–23.1%) |
| Ladybird | 30 | 29 (–3.9%) |
28 (–6.5%) |
28 (–5%) |
28 (–5.5%) |
28 (–5.7%) |
28 (–5.1%) |
| Leanpub | 290 | 287 (–1.1%) |
281 (–3.2%) |
287 (–1%) |
287 (–1.3%) |
285 (–1.9%) |
285 (–1.8%) |
| Legge Stanca | 17 | 12 (–28.5%) |
12 (–30.4%) |
12 (–27.3%) |
12 (–29.7%) |
12 (–30.2%) |
12 (–27.5%) |
| Mastodon | 31 | 30 (–3.2%) |
29 (–4.7%) |
30 (–2.7%) |
29 (–4.6%) |
29 (–4.6%) |
30 (–2.8%) |
| MDN | 117 | 71 (–39.3%) |
68 (–41.9%) |
73 (–37.9%) |
72 (–38.1%) |
69 (–40.6%) |
72 (–38.3%) |
| Mistral AI | 348 | 333 (–4.3%) |
329 (–5.7%) |
n/a | 345 (–0.9%) |
336 (–3.7%) |
345 (–0.9%) |
| Mondoweiss | 460 | 450 (–2%) |
431 (–6.2%) |
n/a | 439 (–4.6%) |
437 (–4.9%) |
440 (–4.3%) |
| Mozilla | 47 | 37 (–21.1%) |
35 (–25.9%) |
37 (–22.3%) |
36 (–23.9%) |
35 (–26.1%) |
36 (–23.1%) |
| Nielsen Norman Group | 100 | 84 (–16.3%) |
83 (–17.3%) |
84 (–16%) |
84 (–15.5%) |
83 (–17%) |
84 (–15.6%) |
| Opera | 184 | 132 (–28.1%) |
129 (–29.9%) |
132 (–28.3%) |
131 (–28.6%) |
131 (–28.9%) |
131 (–28.7%) |
| OSCE | 177 | 149 (–15.8%) |
146 (–17.1%) |
149 (–15.8%) |
149 (–15.6%) |
146 (–17.1%) |
149 (–15.6%) |
| 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 (–14.4%) |
17 (–16.8%) |
18 (–14.2%) |
| SitePoint | 262 | 259 (–1.3%) |
258 (–1.5%) |
260 (–0.7%) |
260 (–0.9%) |
259 (–1.1%) |
260 (–0.7%) |
| Smashing Magazine | 285 | 286 (+0.2%) |
284 (–0.6%) |
285 (–0.1%) |
285 (–0.2%) |
284 (–0.4%) |
285 (+0%) |
| Startup-Verband | 45 | 33 (–26.3%) |
32 (–29.3%) |
33 (–26.8%) |
33 (–27.2%) |
33 (–28.2%) |
33 (–26.5%) |
| TAZ | 451 | 426 (–5.6%) |
405 (–10.3%) |
n/a | 417 (–7.6%) |
416 (–7.9%) |
419 (–7.2%) |
| TetraLogical | 60 | 54 (–10%) |
54 (–10.4%) |
55 (–9.7%) |
55 (–9.7%) |
54 (–10.2%) |
55 (–9.7%) |
| TPGi | 180 | 166 (–8.2%) |
163 (–9.7%) |
166 (–8.3%) |
164 (–9.2%) |
163 (–9.4%) |
165 (–8.3%) |
| United Nations | 152 | 132 (–13.6%) |
127 (–16.7%) |
132 (–13.7%) |
130 (–14.5%) |
129 (–15.2%) |
131 (–13.9%) |
| UX Collective | 98 | 141 (+43.2%) |
96 (–2.5%) |
98 (–0.7%) |
97 (–1.1%) |
97 (–1.4%) |
97 (–0.9%) |
| Vivaldi | 93 | 85 (–8.5%) |
84 (–10.4%) |
85 (–9.2%) |
84 (–9.5%) |
84 (–10.5%) |
85 (–9.1%) |
| W3C | 51 | 41 (–18.7%) |
40 (–20.8%) |
41 (–19.1%) |
41 (–19.4%) |
40 (–20.3%) |
41 (–19%) |
| WordPress Blog | 207 | 191 (–7.4%) |
188 (–9%) |
193 (–6.8%) |
191 (–7.4%) |
190 (–8.3%) |
193 (–6.6%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 39/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 31 ms | 40 ms | 782 ms | 37 ms | 9 ms | 188 ms | |
| Average result (KB) | 386 | 367 (–4.8%) |
355 (–8%) |
376 (–2.7%) |
363 (–6%) |
361 (–6.3%) |
364 (–5.6%) |
| 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%) |
54 (–14.7%) |
57 (–9.9%) |
40 (–37.1%) |
56 (–11.7%) |
59 (–7.2%) |
| Apple | 253 | 240 (–5.3%) |
224 (–11.6%) |
238 (–5.9%) |
228 (–9.8%) |
236 (–6.9%) |
238 (–5.9%) |
| BBC | 704 | 662 (–6%) |
647 (–8.1%) |
n/a | 657 (–6.7%) |
657 (–6.8%) |
698 (–0.9%) |
| Bun | 461 | 435 (–5.7%) |
420 (–8.8%) |
n/a | 374 (–18.9%) |
436 (–5.3%) |
455 (–1.3%) |
| CERN | 286 | 259 (–9.2%) |
245 (–14.2%) |
264 (–7.7%) |
207 (–27.5%) |
258 (–9.7%) |
274 (–4.2%) |
| CSS-Tricks | 166 | 145 (–13.1%) |
133 (–20.1%) |
146 (–12.3%) |
112 (–32.8%) |
144 (–13.4%) |
153 (–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%) |
163 (–35.3%) |
176 (–30.5%) |
136 (–46.4%) |
174 (–31.2%) |
182 (–27.8%) |
| DLR | 541 | 508 (–6%) |
499 (–7.8%) |
n/a | 494 (–8.7%) |
501 (–7.4%) |
538 (–0.5%) |
| ECMAScript | 7236 | 6879 (–4.9%) |
6644 (–8.2%) |
n/a | 6756 (–6.6%) |
6779 (–6.3%) |
6809 (–5.9%) |
| EDRi | 84 | 74 (–11.1%) |
70 (–15.9%) |
76 (–9.5%) |
55 (–34.7%) |
74 (–11.3%) |
78 (–6.7%) |
| EFF | 54 | 48 (–10.9%) |
44 (–18.9%) |
48 (–10.1%) |
46 (–14.2%) |
47 (–12.5%) |
49 (–9.7%) |
| European Alternatives | 49 | 33 (–33.2%) |
31 (–37.7%) |
33 (–33%) |
31 (–36.9%) |
33 (–33.8%) |
33 (–33.1%) |
| FAZ | 1487 | 1373 (–7.6%) |
1315 (–11.6%) |
n/a | 1242 (–16.5%) |
1424 (–4.2%) |
1435 (–3.5%) |
| French Tech | 167 | 130 (–22.4%) |
125 (–25.3%) |
131 (–21.9%) |
55 (–67.4%) |
129 (–22.9%) |
136 (–18.4%) |
| Front-End Social | 36 | 34 (–3.7%) |
31 (–13.9%) |
35 (–3.1%) |
31 (–13.8%) |
34 (–5.6%) |
35 (–3.1%) |
| Frontend Dogma | 223 | 231 (+3.6%) |
216 (–3.3%) |
223 (–0.2%) |
228 (+2.1%) |
223 (0%) |
242 (+8.3%) |
| 79 | 75 (–4.7%) |
75 (–5.4%) |
78 (–0.8%) |
63 (–19.8%) |
76 (–3.6%) |
79 (–0.3%) |
|
| Ground News | 2099 | 1964 (–6.4%) |
1890 (–10%) |
n/a | 1937 (–7.7%) |
1961 (–6.6%) |
2085 (–0.7%) |
| 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 | 151 | 154 (+1.8%) |
150 (–0.7%) |
151 (–0.3%) |
155 (+2.5%) |
151 (–0.3%) |
157 (+3.8%) |
| IETF | 83 | 34 (–58.9%) |
32 (–61.9%) |
35 (–58.3%) |
33 (–60%) |
33 (–59.9%) |
34 (–58.6%) |
| Igalia | 43 | 33 (–23.1%) |
30 (–29.9%) |
33 (–23.7%) |
32 (–25.9%) |
32 (–25.3%) |
33 (–23.1%) |
| Ladybird | 30 | 29 (–4%) |
28 (–7.7%) |
28 (–5.1%) |
26 (–14.1%) |
28 (–5.8%) |
28 (–5.1%) |
| Leanpub | 290 | 276 (–4.9%) |
261 (–10.1%) |
287 (–1.1%) |
267 (–8.1%) |
273 (–5.8%) |
285 (–1.8%) |
| Legge Stanca | 17 | 10 (–43.8%) |
9 (–46.5%) |
10 (–42.7%) |
9 (–46.5%) |
10 (–40.5%) |
12 (–27.5%) |
| Mastodon | 31 | 29 (–4.7%) |
26 (–15.6%) |
30 (–3.1%) |
26 (–15.5%) |
29 (–5.1%) |
30 (–2.8%) |
| MDN | 117 | 71 (–39.4%) |
67 (–43%) |
72 (–38%) |
55 (–53%) |
69 (–40.6%) |
72 (–38.3%) |
| Mistral AI | 348 | 333 (–4.4%) |
253 (–27.5%) |
n/a | 258 (–26%) |
335 (–3.8%) |
345 (–0.9%) |
| Mondoweiss | 460 | 432 (–5.9%) |
412 (–10.4%) |
n/a | 407 (–11.5%) |
426 (–7.3%) |
440 (–4.3%) |
| Mozilla | 47 | 37 (–21.1%) |
32 (–31.7%) |
37 (–22.3%) |
33 (–29.5%) |
35 (–26.1%) |
36 (–23.1%) |
| Nielsen Norman Group | 100 | 83 (–17%) |
59 (–41.4%) |
83 (–16.6%) |
59 (–40.6%) |
82 (–17.6%) |
84 (–15.6%) |
| Opera | 184 | 127 (–30.7%) |
120 (–34.9%) |
131 (–28.6%) |
83 (–55.1%) |
126 (–31.3%) |
131 (–28.7%) |
| OSCE | 177 | 149 (–15.9%) |
139 (–21.1%) |
149 (–15.8%) |
141 (–20.5%) |
146 (–17.3%) |
149 (–15.6%) |
| 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 (–15.8%) |
17 (–17.6%) |
18 (–14.2%) |
| SitePoint | 262 | 249 (–4.8%) |
232 (–11.4%) |
259 (–0.9%) |
233 (–10.9%) |
250 (–4.6%) |
260 (–0.7%) |
| Smashing Magazine | 285 | 284 (–0.3%) |
281 (–1.3%) |
285 (–0.1%) |
271 (–4.9%) |
283 (–0.9%) |
285 (+0%) |
| Startup-Verband | 45 | 33 (–26.4%) |
31 (–30.9%) |
33 (–26.9%) |
32 (–29%) |
33 (–28.4%) |
33 (–26.5%) |
| TAZ | 451 | 406 (–10.1%) |
378 (–16.2%) |
n/a | 396 (–12.3%) |
405 (–10.2%) |
419 (–7.2%) |
| TetraLogical | 60 | 54 (–10.2%) |
50 (–16.8%) |
55 (–9.8%) |
51 (–16.2%) |
54 (–10.4%) |
55 (–9.7%) |
| TPGi | 180 | 135 (–24.9%) |
132 (–26.6%) |
142 (–21.6%) |
117 (–35.4%) |
141 (–21.9%) |
165 (–8.3%) |
| United Nations | 152 | 128 (–16.1%) |
114 (–25.5%) |
124 (–18.5%) |
85 (–44%) |
125 (–17.6%) |
131 (–13.9%) |
| UX Collective | 98 | 90 (–8.1%) |
88 (–10.4%) |
92 (–6.2%) |
89 (–9.8%) |
90 (–8.7%) |
97 (–0.9%) |
| Vivaldi | 93 | 82 (–11.8%) |
75 (–19.7%) |
83 (–11%) |
70 (–24.8%) |
82 (–12.4%) |
85 (–9.1%) |
| W3C | 51 | 39 (–22.5%) |
36 (–28.8%) |
39 (–22.9%) |
37 (–27.4%) |
38 (–24.2%) |
41 (–19%) |
| WordPress Blog | 207 | 170 (–17.9%) |
160 (–22.5%) |
179 (–13.2%) |
141 (–31.6%) |
177 (–14.4%) |
193 (–6.6%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 39/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 35 ms | 115 ms | 1359 ms | 313 ms | 11 ms | 226 ms | |
| Average result (KB) | 386 | 356 (–7.7%) |
339 (–12%) |
373 (–3.2%) |
335 (–13.2%) |
354 (–8.3%) |
364 (–5.6%) |
Benchmarks last updated: Jun 2, 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.