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 (–19.1%) |
26 (–16.3%) |
| A List Apart | 63 | 59 (–5.8%) |
57 (–8.4%) |
58 (–7.2%) |
58 (–7.7%) |
57 (–8.2%) |
58 (–7.3%) |
| Apple | 244 | 231 (–5.1%) |
225 (–7.5%) |
229 (–5.9%) |
228 (–6.3%) |
227 (–6.6%) |
229 (–6%) |
| BBC | 676 | 671 (–0.7%) |
666 (–1.5%) |
n/a | 669 (–1.1%) |
668 (–1.2%) |
671 (–0.8%) |
| Bun | 283 | 272 (–3.8%) |
264 (–6.8%) |
278 (–1.7%) |
275 (–2.6%) |
274 (–3.1%) |
276 (–2.4%) |
| CERN | 290 | 279 (–4%) |
271 (–6.8%) |
278 (–4.2%) |
278 (–4.3%) |
277 (–4.7%) |
278 (–4.3%) |
| CSS-Tricks | 148 | 136 (–8%) |
133 (–9.8%) |
134 (–9.1%) |
134 (–9.5%) |
134 (–9.4%) |
135 (–9%) |
| DeepSeek | 98 | 97 (–0.8%) |
91 (–7.5%) |
97 (–1.2%) |
97 (–1.5%) |
97 (–1.3%) |
97 (–1.2%) |
| DIN | 254 | 183 (–28.3%) |
176 (–30.7%) |
184 (–27.8%) |
182 (–28.3%) |
181 (–29%) |
183 (–27.9%) |
| DLR | 544 | 541 (–0.6%) |
539 (–1%) |
n/a | 540 (–0.8%) |
539 (–0.9%) |
541 (–0.5%) |
| ECMAScript | 7421 | 7054 (–4.9%) |
6813 (–8.2%) |
n/a | 6929 (–6.6%) |
6958 (–6.2%) |
6983 (–5.9%) |
| EDRi | 84 | 78 (–7.7%) |
77 (–8.2%) |
78 (–6.6%) |
78 (–7.6%) |
77 (–7.9%) |
78 (–6.7%) |
| EFF | 53 | 49 (–8%) |
47 (–12.5%) |
49 (–7.8%) |
48 (–10%) |
47 (–11.2%) |
48 (–9.7%) |
| European Alternatives | 49 | 33 (–33.1%) |
33 (–33.9%) |
33 (–32.9%) |
33 (–33.1%) |
33 (–33.5%) |
33 (–33.1%) |
| FAZ | 1606 | 1555 (–3.2%) |
1477 (–8%) |
n/a | 1553 (–3.3%) |
1550 (–3.5%) |
1549 (–3.5%) |
| French Tech | 174 | 139 (–19.9%) |
138 (–20.6%) |
140 (–19.6%) |
139 (–19.9%) |
138 (–20.4%) |
140 (–19.7%) |
| Front-End Social | 43 | 41 (–4.1%) |
40 (–6.4%) |
42 (–3.4%) |
40 (–6.3%) |
40 (–6.3%) |
42 (–3.5%) |
| Frontend Dogma | 222 | 229 (+3.6%) |
222 (0%) |
221 (–0.2%) |
235 (+6%) |
221 (0%) |
240 (+8.4%) |
| 80 | 123 (+54.8%) |
79 (–0.6%) |
79 (–0.3%) |
79 (–0.8%) |
79 (–0.5%) |
79 (–0.3%) |
|
| Ground News | 2488 | 2465 (–0.9%) |
2425 (–2.5%) |
n/a | 2469 (–0.8%) |
2465 (–0.9%) |
2474 (–0.5%) |
| HTML 3.2 | 123 | 119 (–3%) |
119 (–3%) |
121 (–1.2%) |
124 (+0.8%) |
119 (–2.7%) |
123 (+0.5%) |
| HTML Living Standard | 151 | 154 (+1.8%) |
150 (–0.6%) |
151 (–0.2%) |
155 (+2.6%) |
151 (–0.2%) |
157 (+3.8%) |
| IETF | 82 | 34 (–58.4%) |
32 (–61%) |
34 (–57.9%) |
34 (–59%) |
33 (–59.4%) |
34 (–58.4%) |
| Igalia | 44 | 34 (–21.9%) |
32 (–27.7%) |
34 (–23%) |
34 (–23.4%) |
34 (–23.7%) |
34 (–23.3%) |
| Ladybird | 30 | 28 (–3.9%) |
28 (–6.4%) |
28 (–5%) |
28 (–5.4%) |
28 (–5.7%) |
28 (–5%) |
| Leanpub | 360 | 356 (–1.1%) |
349 (–3%) |
n/a | 355 (–1.2%) |
353 (–1.8%) |
354 (–1.6%) |
| Legge Stanca | 17 | 12 (–28.5%) |
12 (–30.4%) |
12 (–27.3%) |
12 (–30%) |
12 (–30.1%) |
12 (–27.5%) |
| Mastodon | 43 | 41 (–4.1%) |
40 (–6.4%) |
41 (–3.4%) |
40 (–6.4%) |
40 (–6.3%) |
41 (–3.5%) |
| MDN | 118 | 70 (–40.2%) |
67 (–42.7%) |
72 (–38.8%) |
71 (–39.5%) |
69 (–41.2%) |
71 (–39.2%) |
| Mistral AI | 425 | 411 (–3.2%) |
340 (–20%) |
n/a | 423 (–0.3%) |
415 (–2.2%) |
425 (0%) |
| Mondoweiss | 403 | 399 (–1%) |
383 (–5%) |
n/a | 387 (–3.9%) |
387 (–3.9%) |
388 (–3.6%) |
| Mozilla | 47 | 37 (–21%) |
35 (–25.8%) |
37 (–22.2%) |
36 (–23.7%) |
35 (–25.6%) |
36 (–23%) |
| Nielsen Norman Group | 103 | 86 (–16.3%) |
85 (–17.3%) |
86 (–15.9%) |
87 (–15.5%) |
85 (–16.8%) |
87 (–15.5%) |
| Opera | 185 | 135 (–26.9%) |
132 (–28.7%) |
135 (–27.1%) |
134 (–27.4%) |
134 (–27.6%) |
134 (–27.6%) |
| OSCE | 171 | 143 (–16.1%) |
141 (–17.3%) |
144 (–16%) |
144 (–15.8%) |
142 (–16.9%) |
144 (–15.8%) |
| Scrum Guide | 34 | 31 (–8.9%) |
30 (–10.7%) |
32 (–7.3%) |
31 (–7.9%) |
31 (–10%) |
31 (–7.8%) |
| SELFHTML | 21 | 19 (–7.6%) |
17 (–17.4%) |
18 (–13.7%) |
18 (–14.6%) |
18 (–16.5%) |
18 (–14.2%) |
| SitePoint | 241 | 237 (–1.3%) |
237 (–1.5%) |
239 (–0.7%) |
238 (–0.9%) |
238 (–0.9%) |
239 (–0.7%) |
| Smashing Magazine | 313 | 313 (+0.2%) |
311 (–0.5%) |
n/a | 312 (–0.2%) |
312 (–0.4%) |
313 (0%) |
| Startup-Verband | 51 | 38 (–26.3%) |
36 (–29.3%) |
37 (–27.2%) |
37 (–27.7%) |
37 (–28.2%) |
37 (–27.1%) |
| TAZ | 415 | 392 (–5.6%) |
372 (–10.3%) |
n/a | 383 (–7.7%) |
384 (–7.5%) |
385 (–7.2%) |
| TetraLogical | 60 | 54 (–10.1%) |
54 (–10.5%) |
54 (–9.8%) |
54 (–9.8%) |
54 (–10.1%) |
54 (–9.8%) |
| TPGi | 177 | 162 (–8.5%) |
160 (–9.9%) |
162 (–8.4%) |
161 (–9.3%) |
161 (–9.4%) |
162 (–8.5%) |
| United Nations | 152 | 132 (–13.7%) |
127 (–16.7%) |
131 (–13.7%) |
130 (–14.6%) |
129 (–15.2%) |
131 (–14%) |
| UX Collective | 156 | 201 (+29%) |
152 (–2.2%) |
154 (–0.7%) |
154 (–1.3%) |
154 (–1.3%) |
151 (–2.7%) |
| Vivaldi | 91 | 83 (–8.8%) |
82 (–10.7%) |
83 (–9.5%) |
82 (–9.8%) |
82 (–10.5%) |
83 (–9.4%) |
| W3C | 52 | 42 (–18.4%) |
41 (–20.4%) |
42 (–18.8%) |
42 (–19.1%) |
42 (–19.9%) |
42 (–18.7%) |
| WordPress Blog | 221 | 203 (–8%) |
200 (–9.4%) |
205 (–7.5%) |
203 (–8.1%) |
202 (–8.6%) |
205 (–7.2%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 38/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 32 ms | 39 ms | 857 ms | 43 ms | 9 ms | 199 ms | |
| Average result (KB) | 399 | 380 (–4.7%) |
366 (–8.2%) |
388 (–2.6%) |
375 (–5.9%) |
374 (–6.1%) |
377 (–5.5%) |
| 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 (–25.2%) |
26 (–16.3%) |
| A List Apart | 63 | 57 (–9.1%) |
53 (–14.8%) |
56 (–10%) |
39 (–37.4%) |
55 (–11.5%) |
58 (–7.3%) |
| Apple | 244 | 231 (–5.2%) |
216 (–11.5%) |
229 (–5.9%) |
219 (–10.1%) |
227 (–6.7%) |
229 (–6%) |
| BBC | 676 | 636 (–6%) |
621 (–8.1%) |
n/a | 630 (–6.8%) |
632 (–6.5%) |
671 (–0.8%) |
| Bun | 283 | 272 (–3.9%) |
259 (–8.3%) |
278 (–1.7%) |
271 (–4%) |
274 (–3.2%) |
276 (–2.4%) |
| CERN | 290 | 263 (–9.4%) |
248 (–14.5%) |
268 (–7.7%) |
216 (–25.6%) |
262 (–9.8%) |
278 (–4.3%) |
| CSS-Tricks | 148 | 131 (–11.3%) |
119 (–19.2%) |
130 (–11.9%) |
103 (–30.6%) |
129 (–12.5%) |
135 (–9%) |
| DeepSeek | 98 | 95 (–3.2%) |
71 (–27.4%) |
95 (–3.4%) |
77 (–21.6%) |
95 (–3.5%) |
97 (–1.2%) |
| DIN | 254 | 176 (–30.8%) |
164 (–35.4%) |
177 (–30.6%) |
136 (–46.5%) |
175 (–31.1%) |
183 (–27.9%) |
| DLR | 544 | 512 (–6%) |
502 (–7.8%) |
n/a | 497 (–8.6%) |
504 (–7.4%) |
541 (–0.5%) |
| ECMAScript | 7421 | 7054 (–4.9%) |
6812 (–8.2%) |
n/a | 6928 (–6.6%) |
6958 (–6.2%) |
6983 (–5.9%) |
| EDRi | 84 | 75 (–11.2%) |
71 (–16%) |
76 (–9.6%) |
55 (–34.7%) |
75 (–11.1%) |
78 (–6.7%) |
| EFF | 53 | 47 (–10.8%) |
43 (–18.6%) |
48 (–10.1%) |
46 (–14.1%) |
47 (–12.2%) |
48 (–9.7%) |
| European Alternatives | 49 | 33 (–33.2%) |
31 (–37.7%) |
33 (–33%) |
31 (–36.9%) |
33 (–33.5%) |
33 (–33.1%) |
| FAZ | 1606 | 1483 (–7.6%) |
1422 (–11.5%) |
n/a | 1351 (–15.8%) |
1542 (–4%) |
1549 (–3.5%) |
| French Tech | 174 | 133 (–23.6%) |
128 (–26.5%) |
134 (–23%) |
58 (–66.9%) |
132 (–24%) |
140 (–19.7%) |
| Front-End Social | 43 | 41 (–5.2%) |
37 (–14.4%) |
41 (–3.7%) |
37 (–14.2%) |
40 (–6.6%) |
42 (–3.5%) |
| Frontend Dogma | 222 | 229 (+3.6%) |
214 (–3.3%) |
221 (–0.2%) |
227 (+2.3%) |
221 (0%) |
240 (+8.4%) |
| 80 | 76 (–4.6%) |
75 (–5.3%) |
79 (–0.8%) |
64 (–19.8%) |
77 (–3.6%) |
79 (–0.3%) |
|
| Ground News | 2488 | 2321 (–6.7%) |
2246 (–9.7%) |
n/a | 2290 (–7.9%) |
2317 (–6.9%) |
2474 (–0.5%) |
| HTML 3.2 | 123 | 119 (–3.1%) |
118 (–3.4%) |
121 (–1.3%) |
123 (+0.6%) |
119 (–2.8%) |
123 (+0.5%) |
| HTML Living Standard | 151 | 154 (+1.8%) |
150 (–0.7%) |
151 (–0.3%) |
155 (+2.5%) |
151 (–0.2%) |
157 (+3.8%) |
| IETF | 82 | 34 (–58.7%) |
31 (–61.8%) |
34 (–58.1%) |
33 (–59.8%) |
33 (–59.5%) |
34 (–58.4%) |
| Igalia | 44 | 34 (–23.4%) |
31 (–30.1%) |
33 (–23.9%) |
33 (–26.1%) |
33 (–25.3%) |
34 (–23.3%) |
| Ladybird | 30 | 28 (–3.9%) |
27 (–7.7%) |
28 (–5%) |
25 (–14.1%) |
28 (–5.7%) |
28 (–5%) |
| Leanpub | 360 | 344 (–4.3%) |
328 (–8.9%) |
n/a | 335 (–7%) |
341 (–5.1%) |
354 (–1.6%) |
| Legge Stanca | 17 | 10 (–43.8%) |
9 (–46.5%) |
10 (–42.7%) |
9 (–46.7%) |
10 (–40.3%) |
12 (–27.5%) |
| Mastodon | 43 | 41 (–5.2%) |
37 (–14.4%) |
41 (–3.7%) |
37 (–14.3%) |
40 (–6.6%) |
41 (–3.5%) |
| MDN | 118 | 70 (–40.3%) |
66 (–43.8%) |
72 (–38.9%) |
54 (–53.9%) |
69 (–41.3%) |
71 (–39.2%) |
| Mistral AI | 425 | 411 (–3.2%) |
258 (–39.2%) |
n/a | 333 (–21.7%) |
415 (–2.3%) |
425 (0%) |
| Mondoweiss | 403 | 381 (–5.5%) |
367 (–9%) |
n/a | 360 (–10.6%) |
376 (–6.6%) |
388 (–3.6%) |
| Mozilla | 47 | 37 (–21%) |
32 (–31.6%) |
37 (–22.2%) |
33 (–29.4%) |
35 (–25.6%) |
36 (–23%) |
| Nielsen Norman Group | 103 | 85 (–17%) |
60 (–41.7%) |
86 (–16.6%) |
61 (–41%) |
85 (–17.4%) |
87 (–15.5%) |
| Opera | 185 | 130 (–29.5%) |
122 (–33.8%) |
134 (–27.4%) |
85 (–53.9%) |
129 (–30%) |
134 (–27.6%) |
| OSCE | 171 | 143 (–16.1%) |
134 (–21.5%) |
144 (–16%) |
135 (–20.8%) |
142 (–17%) |
144 (–15.8%) |
| Scrum Guide | 34 | 31 (–9%) |
30 (–10.9%) |
32 (–7.3%) |
31 (–8.3%) |
31 (–10%) |
31 (–7.8%) |
| SELFHTML | 21 | 18 (–14.2%) |
17 (–19.1%) |
18 (–14.4%) |
18 (–16%) |
17 (–17.3%) |
18 (–14.2%) |
| SitePoint | 241 | 229 (–4.9%) |
215 (–10.5%) |
231 (–4.1%) |
217 (–9.8%) |
229 (–4.6%) |
239 (–0.7%) |
| Smashing Magazine | 313 | 312 (–0.2%) |
309 (–1.2%) |
n/a | 296 (–5.4%) |
310 (–0.8%) |
313 (0%) |
| Startup-Verband | 51 | 37 (–26.4%) |
35 (–31.1%) |
37 (–27.3%) |
36 (–29.6%) |
36 (–28.4%) |
37 (–27.1%) |
| TAZ | 415 | 373 (–10.1%) |
349 (–16%) |
n/a | 363 (–12.4%) |
374 (–9.8%) |
385 (–7.2%) |
| TetraLogical | 60 | 54 (–10.2%) |
50 (–17%) |
54 (–9.9%) |
50 (–16.4%) |
54 (–10.2%) |
54 (–9.8%) |
| TPGi | 177 | 136 (–23.4%) |
133 (–25.1%) |
142 (–20%) |
117 (–34.2%) |
138 (–22%) |
162 (–8.5%) |
| United Nations | 152 | 128 (–16.2%) |
113 (–25.5%) |
124 (–18.5%) |
85 (–44.2%) |
125 (–17.6%) |
131 (–14%) |
| UX Collective | 156 | 145 (–6.5%) |
132 (–15.1%) |
153 (–1.4%) |
133 (–14.8%) |
144 (–7.7%) |
151 (–2.7%) |
| Vivaldi | 91 | 80 (–12%) |
73 (–20%) |
81 (–11.5%) |
64 (–29.8%) |
80 (–12.8%) |
83 (–9.4%) |
| W3C | 52 | 40 (–22.1%) |
37 (–28.4%) |
40 (–22.5%) |
38 (–27%) |
40 (–23.7%) |
42 (–18.7%) |
| WordPress Blog | 221 | 182 (–17.9%) |
171 (–22.7%) |
191 (–13.6%) |
153 (–30.9%) |
189 (–14.5%) |
205 (–7.2%) |
| Sites processed (of sites overall) | 48/48 | 48/48 | 38/48 | 48/48 | 48/48 | 48/48 | |
| Average processing time | 38 ms | 65 ms | 1244 ms | 153 ms | 11 ms | 196 ms | |
| Average result (KB) | 399 | 368 (–7.6%) |
350 (–12.2%) |
386 (–3.1%) |
348 (–12.7%) |
367 (–8%) |
377 (–5.5%) |
Benchmarks last updated: Jul 27, 2026
- Minifiers:
- htmlcompressor.com incorrectly converts no-break spaces to spaces which can give an impression of greater effectiveness (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.