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🏃‍♂️🏃‍♀️🏃 JS minification benchmarks: babel-minify, esbuild, terser, uglify-js, swc, google closure compiler, tdewolff/minify

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minification benchmarks

What's the best JavaScript minifier?

This project benchmarks the following minifiers:

Benchmarks last updated on Dec 27, 2024.


🙋‍♂️ Why?

  1. To help you pick a minifier that fits your needs
  2. To promote JS minifiers and document their performances
  3. To encourage healthy competition and improvement amongst minifiers

👟 Methodology

  • Each minifier is executed in its own process with a 10s timeout
  • Artifact integrity is verified by a test before and after minification
  • Minifier upgrade PRs are automated via WhiteSource Renovate
  • Benchmarks are updated on every PR via GitHub Actions

⏱ Metrics

Minifiers are ranked by smallest minzipped size.

Minified size

Size of the minified output.

Minzipped size

Size of the minified output with Gzip compression.

For minifiers, this measures how compressable the output is.

For users, this measures network transfer size, which is usually the metric that matters most.

Time

How long minification took (average of 5 runs). Each time is annotated with a multiplier relative to the fastest minifier.

📋 Results

---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "react v17.0.2"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10,11]
	y-axis "Gzip size" 0 --> 19385
	bar [19385,8173,8177,8193,8265,8448,8543,8631,8661,8668,8746,11040]
Loading
Artifact Original size Gzip size
react v17.0.2 (Source) 72.13 kB 19.39 kB
Minifier Minified size Minzipped size Time
1. @swc/core -68% 22.87 kB 🏆-58% 8.17 kB 7x 20 ms
2. uglify-js 🏆-69% 22.64 kB -58% 8.18 kB 190x 536 ms
3. google-closure-compiler -68% 22.83 kB -58% 8.19 kB 1161x 3,269 ms
4. terser -68% 23.07 kB -57% 8.27 kB 98x 277 ms
5. babel-minify -67% 23.60 kB -56% 8.45 kB 209x 590 ms
6. esbuild -67% 23.70 kB -56% 8.54 kB 4x 13 ms
7. @tdewolff/minify -67% 23.53 kB -55% 8.63 kB 🏆 3 ms
8. bun -67% 23.99 kB -55% 8.66 kB 5x 14 ms
9. uglify-js (no compress) -65% 25.03 kB -55% 8.67 kB 33x 95 ms
10. terser (no compress) -65% 25.08 kB -55% 8.75 kB 43x 123 ms
11. tedivm/jshrink -43% 40.82 kB -43% 11.04 kB 37x 105 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "moment v2.29.1"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10,11]
	y-axis "Gzip size" 0 --> 36231
	bar [36231,18568,18687,18690,18910,19119,19334,19496,19569,19683,19857,24998]
Loading
Artifact Original size Gzip size
moment v2.29.1 (Source) 173.90 kB 36.23 kB
Minifier Minified size Minzipped size Time
1. uglify-js 🏆-67% 57.73 kB 🏆-49% 18.57 kB 219x 1,181 ms
2. @swc/core -67% 58.21 kB -48% 18.69 kB 9x 50 ms
3. terser -66% 59.14 kB -48% 18.69 kB 125x 672 ms
4. google-closure-compiler -66% 58.27 kB -48% 18.91 kB 718x 3,856 ms
5. babel-minify -66% 59.70 kB -47% 19.12 kB 254x 1,367 ms
6. esbuild -66% 59.82 kB -47% 19.33 kB 3x 19 ms
7. @tdewolff/minify -66% 59.95 kB -46% 19.50 kB 🏆 5 ms
8. uglify-js (no compress) -64% 62.50 kB -46% 19.57 kB 40x 217 ms
9. terser (no compress) -64% 63.15 kB -46% 19.68 kB 51x 274 ms
10. bun -64% 61.84 kB -45% 19.86 kB 3x 18 ms
11. tedivm/jshrink -44% 97.63 kB -31% 25.00 kB 45x 246 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "jquery v3.5.1"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10,11]
	y-axis "Gzip size" 0 --> 84498
	bar [84498,30867,30903,30912,31468,31470,31621,31799,31954,32653,33086,40879]
Loading
Artifact Original size Gzip size
jquery v3.5.1 (Source) 287.63 kB 84.50 kB
Minifier Minified size Minzipped size Time
1. @swc/core -69% 89.15 kB 🏆-63% 30.87 kB 10x 89 ms
2. uglify-js 🏆-69% 88.45 kB -63% 30.90 kB 196x 1,639 ms
3. terser -69% 89.54 kB -63% 30.91 kB 107x 895 ms
4. @tdewolff/minify -69% 89.85 kB -63% 31.47 kB 🏆 8 ms
5. uglify-js (no compress) -67% 94.08 kB -63% 31.47 kB 38x 324 ms
6. terser (no compress) -67% 94.55 kB -63% 31.62 kB 43x 364 ms
7. babel-minify -68% 92.10 kB -62% 31.80 kB 270x 2,255 ms
8. esbuild -69% 90.07 kB -62% 31.95 kB 4x 37 ms
9. bun -68% 92.55 kB -61% 32.65 kB 3x 29 ms
10. google-closure-compiler -68% 92.70 kB -61% 33.09 kB 523x 4,363 ms
11. tedivm/jshrink -50% 144.14 kB -52% 40.88 kB 37x 315 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "vue v2.6.12"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10,11]
	y-axis "Gzip size" 0 --> 89668
	bar [89668,42485,42919,43036,43925,44230,44368,44376,44450,44679,45400,57169]
Loading
Artifact Original size Gzip size
vue v2.6.12 (Source) 342.15 kB 89.67 kB
Minifier Minified size Minzipped size Time
1. @swc/core -66% 115.48 kB 🏆-53% 42.49 kB 9x 126 ms
2. terser -66% 116.80 kB -52% 42.92 kB 83x 1,113 ms
3. uglify-js 🏆-67% 113.80 kB -52% 43.04 kB 171x 2,282 ms
4. babel-minify -66% 117.90 kB -51% 43.93 kB 186x 2,476 ms
5. google-closure-compiler -66% 115.61 kB -51% 44.23 kB 354x 4,717 ms
6. esbuild -65% 118.14 kB -51% 44.37 kB 3x 42 ms
7. @tdewolff/minify -66% 117.81 kB -51% 44.38 kB 🏆 13 ms
8. uglify-js (no compress) -63% 126.14 kB -50% 44.45 kB 28x 375 ms
9. terser (no compress) -63% 126.58 kB -50% 44.68 kB 33x 441 ms
10. bun -64% 121.50 kB -49% 45.40 kB 2x 32 ms
11. tedivm/jshrink -42% 197.36 kB -36% 57.17 kB 31x 416 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "lodash v4.17.21"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10,11]
	y-axis "Gzip size" 0 --> 96690
	bar [96690,24686,24972,25156,25186,25503,25862,26200,26221,26498,26655,36327]
Loading
Artifact Original size Gzip size
lodash v4.17.21 (Source) 544.09 kB 96.69 kB
Minifier Minified size Minzipped size Time
1. uglify-js 🏆-87% 68.17 kB 🏆-74% 24.69 kB 148x 1,756 ms
2. google-closure-compiler -86% 73.47 kB -74% 24.97 kB 390x 4,633 ms
3. @swc/core -87% 69.84 kB -74% 25.16 kB 9x 111 ms
4. terser -87% 70.67 kB -74% 25.19 kB 78x 935 ms
5. babel-minify -87% 72.37 kB -74% 25.50 kB 163x 1,940 ms
6. uglify-js (no compress) -86% 74.61 kB -73% 25.86 kB 28x 341 ms
7. esbuild -87% 72.48 kB -73% 26.20 kB 2x 29 ms
8. terser (no compress) -86% 75.29 kB -73% 26.22 kB 31x 378 ms
9. @tdewolff/minify -87% 71.90 kB -73% 26.50 kB 🏆 12 ms
10. bun -87% 73.45 kB -72% 26.66 kB 2x 25 ms
11. tedivm/jshrink -73% 148.78 kB -62% 36.33 kB 27x 328 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "d3 v6.3.1"
	x-axis ["Original",1,2,3,4,5,6,7,8,9]
	y-axis "Gzip size" 0 --> 130686
	bar [130686,87016,87207,88087,88319,89156,89891,90800,92395,94121]
Loading
Artifact Original size Gzip size
d3 v6.3.1 (Source) 555.77 kB 130.69 kB
Minifier Minified size Minzipped size Time
1. uglify-js 🏆-53% 263.56 kB 🏆-33% 87.02 kB 121x 4,067 ms
2. @swc/core -52% 265.26 kB -33% 87.21 kB 8x 274 ms
3. terser -52% 267.77 kB -33% 88.09 kB 67x 2,264 ms
4. uglify-js (no compress) -50% 275.35 kB -32% 88.32 kB 22x 749 ms
5. terser (no compress) -50% 276.47 kB -32% 89.16 kB 30x 1,007 ms
6. @tdewolff/minify -51% 269.93 kB -31% 89.89 kB 🏆 33 ms
7. esbuild -51% 270.13 kB -31% 90.80 kB 2x 70 ms
8. bun -51% 273.41 kB -29% 92.40 kB 1x 50 ms
9. google-closure-compiler -51% 270.30 kB -28% 94.12 kB 212x 7,110 ms
10. babel-minify ❌ Minification ❌ ❌ -
11. tedivm/jshrink ❌ Minification ❌ ❌ - 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "terser v5.30.3"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10]
	y-axis "Gzip size" 0 --> 193763
	bar [193763,123076,123334,123482,124428,124609,124897,126562,126706,127653,145178]
Loading
Artifact Original size Gzip size
terser v5.30.3 (Source) 1.01 MB 193.76 kB
Minifier Minified size Minzipped size Time
1. @swc/core -55% 455.57 kB 🏆-36% 123.08 kB 7x 239 ms
2. uglify-js -55% 451.19 kB -36% 123.33 kB 123x 3,878 ms
3. terser -55% 458.29 kB -36% 123.48 kB 69x 2,161 ms
4. terser (no compress) -53% 474.40 kB -36% 124.43 kB 30x 965 ms
5. uglify-js (no compress) -53% 472.16 kB -36% 124.61 kB 25x 790 ms
6. @tdewolff/minify -55% 456.70 kB -36% 124.90 kB 🏆 31 ms
7. google-closure-compiler 🏆-56% 439.95 kB -35% 126.56 kB 211x 6,631 ms
8. esbuild -55% 458.89 kB -35% 126.71 kB 2x 63 ms
9. bun -54% 466.80 kB -34% 127.65 kB 1x 48 ms
10. tedivm/jshrink -37% 633.71 kB -25% 145.18 kB 37x 1,185 ms
11. babel-minify ❌ Minification ❌ ❌ - 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "three v0.124.0"
	x-axis ["Original",1,2,3,4,5,6,7,8,9,10]
	y-axis "Gzip size" 0 --> 248267
	bar [248267,158231,159071,159198,162998,163036,163198,163725,164737,166341,193471]
Loading
Artifact Original size Gzip size
three v0.124.0 (Source) 1.25 MB 248.27 kB
Minifier Minified size Minzipped size Time
1. @swc/core -48% 642.91 kB 🏆-36% 158.23 kB 7x 362 ms
2. uglify-js 🏆-49% 641.59 kB -36% 159.07 kB 107x 5,130 ms
3. terser -48% 653.25 kB -36% 159.20 kB 61x 2,944 ms
4. google-closure-compiler -48% 644.45 kB -34% 163.00 kB 172x 8,208 ms
5. uglify-js (no compress) -46% 674.49 kB -34% 163.04 kB 21x 1,015 ms
6. terser (no compress) -46% 675.50 kB -34% 163.20 kB 27x 1,298 ms
7. esbuild -48% 646.76 kB -34% 163.73 kB 1x 89 ms
8. @tdewolff/minify -48% 644.55 kB -34% 164.74 kB 🏆 48 ms
9. bun -47% 659.43 kB -33% 166.34 kB 1x 62 ms
10. tedivm/jshrink -24% 952.01 kB -22% 193.47 kB 31x 1,519 ms
11. babel-minify ❌ Timed out - - ⚠️ +10,000 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "victory v35.8.4"
	x-axis ["Original",1,2,3,4,5,6,7,8]
	y-axis "Gzip size" 0 --> 309942
	bar [309942,157435,157800,158706,165131,166386,167579,181071,182671]
Loading
Artifact Original size Gzip size
victory v35.8.4 (Source) 2.13 MB 309.94 kB
Minifier Minified size Minzipped size Time
1. uglify-js 🏆-67% 694.78 kB 🏆-49% 157.44 kB 118x 6,627 ms
2. @swc/core -67% 707.21 kB -49% 157.80 kB 9x 529 ms
3. terser -66% 715.58 kB -49% 158.71 kB 70x 3,973 ms
4. @tdewolff/minify -66% 718.73 kB -47% 165.13 kB 🏆 56 ms
5. terser (no compress) -64% 759.34 kB -46% 166.39 kB 28x 1,607 ms
6. uglify-js (no compress) -65% 756.53 kB -46% 167.58 kB 23x 1,345 ms
7. esbuild -66% 724.14 kB -42% 181.07 kB 2x 127 ms
8. bun -66% 727.90 kB -41% 182.67 kB 1x 87 ms
9. google-closure-compiler ❌ Timed out - - ⚠️ +10,000 ms
10. babel-minify ❌ Minification ❌ ❌ -
11. tedivm/jshrink ❌ Post-validation ❌ ❌ - 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "echarts v5.1.1"
	x-axis ["Original",1,2,3,4,5,6,7]
	y-axis "Gzip size" 0 --> 684611
	bar [684611,320205,321987,330736,331412,331563,331791,337934]
Loading
Artifact Original size Gzip size
echarts v5.1.1 (Source) 3.20 MB 684.61 kB
Minifier Minified size Minzipped size Time
1. @swc/core 🏆-69% 993.10 kB 🏆-53% 320.21 kB 8x 1,037 ms
2. terser -69% 1.00 MB -53% 321.99 kB 51x 6,019 ms
3. terser (no compress) -66% 1.07 MB -52% 330.74 kB 22x 2,631 ms
4. uglify-js (no compress) -67% 1.07 MB -52% 331.41 kB 15x 1,776 ms
5. esbuild -68% 1.01 MB -52% 331.56 kB 1x 197 ms
6. @tdewolff/minify -68% 1.01 MB -52% 331.79 kB 🏆 117 ms
7. bun -68% 1.02 MB -51% 337.93 kB 1x 143 ms
8. babel-minify ❌ Timed out - - ⚠️ +10,000 ms
9. google-closure-compiler ❌ Timed out - - ⚠️ +10,000 ms
10. uglify-js ❌ Timed out - - ⚠️ +10,000 ms
11. tedivm/jshrink ❌ Minification ❌ ❌ - 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "antd v4.16.1"
	x-axis ["Original",1,2,3,4,5,6,7]
	y-axis "Gzip size" 0 --> 825175
	bar [825175,452866,457786,472044,475480,478572,488279,491833]
Loading
Artifact Original size Gzip size
antd v4.16.1 (Source) 6.67 MB 825.18 kB
Minifier Minified size Minzipped size Time
1. @swc/core 🏆-68% 2.15 MB 🏆-45% 452.87 kB 9x 1,305 ms
2. terser -66% 2.25 MB -45% 457.79 kB 49x 6,820 ms
3. @tdewolff/minify -66% 2.30 MB -43% 472.04 kB 🏆 136 ms
4. terser (no compress) -64% 2.43 MB -42% 475.48 kB 22x 3,060 ms
5. uglify-js (no compress) -64% 2.42 MB -42% 478.57 kB 18x 2,504 ms
6. esbuild -65% 2.31 MB -41% 488.28 kB 2x 304 ms
7. bun -66% 2.30 MB -40% 491.83 kB 1x 189 ms
8. babel-minify ❌ Timed out - - ⚠️ +10,000 ms
9. google-closure-compiler ❌ Timed out - - ⚠️ +10,000 ms
10. tedivm/jshrink ❌ Timed out - - ⚠️ +10,000 ms
11. uglify-js ❌ Timed out - - ⚠️ +10,000 ms 
---
config:
    xyChart:
        width: 720
        height: 360
        xAxis:
            labelPadding: 20
        yAxis:
            labelPadding: 10
---
xychart-beta
	title "typescript v4.9.5"
	x-axis ["Original",1,2,3,4,5]
	y-axis "Gzip size" 0 --> 1884998
	bar [1884998,851747,876535,876658,879301,915495]
Loading
Artifact Original size Gzip size
typescript v4.9.5 (Source) 10.95 MB 1.88 MB
Minifier Minified size Minzipped size Time
1. @swc/core 🏆-70% 3.31 MB 🏆-55% 851.75 kB 10x 2,680 ms
2. uglify-js (no compress) -68% 3.54 MB -53% 876.54 kB 15x 3,928 ms
3. @tdewolff/minify -69% 3.36 MB -53% 876.66 kB 🏆 254 ms
4. terser (no compress) -68% 3.53 MB -53% 879.30 kB 20x 5,178 ms
5. esbuild -68% 3.49 MB -51% 915.50 kB 1x 501 ms
6. terser ❌ Timed out - - ⚠️ +10,000 ms
7. babel-minify ❌ Timed out - - ⚠️ +10,000 ms
8. google-closure-compiler ❌ Timed out - - ⚠️ +10,000 ms
9. uglify-js ❌ Timed out - - ⚠️ +10,000 ms
10. tedivm/jshrink ❌ Minification ❌ ❌ -
11. bun ❌ Post-validation ❌ ❌ -

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🏃‍♂️🏃‍♀️🏃 JS minification benchmarks: babel-minify, esbuild, terser, uglify-js, swc, google closure compiler, tdewolff/minify

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javascript webpack gzip speed uglifyjs benchmarks size swc minification minifier measures google-closure-compiler uglify-js babel-minify gzip-size minifiers esbuild tesrser minification-benchmarks minification-performance

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