🏃‍♂️🏃‍♀️🏃 JS minification benchmarks

This repo is routinely maintained to compare the quality and speed across the latest versions of the following JavaScript minifiers:

Benchmarks last updated on Jul 23, 2023.

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🙋‍♂️ Why?

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

👟 Methodology

Each minifier is executed in its own process with a 20 second timeout
Artifact integrity is verified by a test before and after minification
Minifier upgrade PRs are automated via WhiteSource Renovate
Benchmarks are gathered on every PR via GitHub Actions (verifiable minified artifacts are uploaded on each run)

⏱ 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

Artifact	Original size	Gzip size
react v17.0.2 (Source)	`72.14 kB`	`19.41 kB`
Minifier	Minified size	Minzipped size	Time
google-closure-compiler	^-68%`22.83 kB`	^🏆-58%`8.17 kB`	^1064x`4,074 ms`
swc	^-68%`22.87 kB`	^-58%`8.18 kB`	^9x`36 ms`
uglify-js	^🏆-69%`22.67 kB`	^-58%`8.19 kB`	^232x`890 ms`
terser	^-68%`23.14 kB`	^-57%`8.32 kB`	^110x`422 ms`
babel-minify	^-67%`23.60 kB`	^-57%`8.43 kB`	^368x`1,409 ms`
esbuild	^-67%`23.70 kB`	^-56%`8.53 kB`	^6x`26 ms`
bun	^-67%`23.98 kB`	^-56%`8.58 kB`	^6x`26 ms`
tdewolff-minify	^-67%`23.53 kB`	^-56%`8.62 kB`	^🏆`4 ms`
uglify-js.no-compress	^-65%`25.03 kB`	^-55%`8.65 kB`	^37x`144 ms`
terser.no-compress	^-65%`25.08 kB`	^-55%`8.72 kB`	^48x`187 ms`
minify-js	^-67%`23.46 kB`	^-54%`9.00 kB`	^1x`5 ms`
jshrink	^-43%`40.82 kB`	^-43%`11.00 kB`	^42x`162 ms`

Artifact	Original size	Gzip size
moment v2.29.1 (Source)	`173.90 kB`	`36.15 kB`
Minifier	Minified size	Minzipped size	Time
uglify-js	^🏆-67%`57.87 kB`	^🏆-49%`18.46 kB`	^253x`2,184 ms`
terser	^-66%`59.16 kB`	^-49%`18.59 kB`	^131x`1,134 ms`
swc	^-66%`58.38 kB`	^-48%`18.67 kB`	^11x`96 ms`
google-closure-compiler	^-66%`58.27 kB`	^-48%`18.75 kB`	^564x`4,863 ms`
babel-minify	^-66%`59.70 kB`	^-47%`19.02 kB`	^330x`2,848 ms`
esbuild	^-66%`59.82 kB`	^-47%`19.24 kB`	^4x`42 ms`
tdewolff-minify	^-66%`59.94 kB`	^-46%`19.42 kB`	^🏆`9 ms`
uglify-js.no-compress	^-64%`62.50 kB`	^-46%`19.44 kB`	^44x`381 ms`
terser.no-compress	^-64%`63.15 kB`	^-46%`19.56 kB`	^54x`469 ms`
bun	^-64%`61.79 kB`	^-46%`19.69 kB`	^4x`36 ms`
minify-js	^-65%`60.74 kB`	^-42%`20.82 kB`	^2x`18 ms`
jshrink	^-44%`97.63 kB`	^-31%`24.80 kB`	^45x`396 ms`

Artifact	Original size	Gzip size
jquery v3.5.1 (Source)	`287.63 kB`	`84.37 kB`
Minifier	Minified size	Minzipped size	Time
uglify-js	^🏆-69%`88.54 kB`	^🏆-63%`30.85 kB`	^224x`3,061 ms`
swc	^-69%`89.16 kB`	^-63%`30.87 kB`	^12x`166 ms`
terser	^-69%`89.54 kB`	^-63%`30.90 kB`	^117x`1,601 ms`
tdewolff-minify	^-69%`89.85 kB`	^-63%`31.44 kB`	^🏆`14 ms`
uglify-js.no-compress	^-67%`94.08 kB`	^-63%`31.44 kB`	^38x`521 ms`
terser.no-compress	^-67%`94.55 kB`	^-63%`31.59 kB`	^47x`649 ms`
babel-minify	^-68%`92.10 kB`	^-62%`31.75 kB`	^322x`4,407 ms`
esbuild	^-69%`90.07 kB`	^-62%`31.89 kB`	^6x`84 ms`
bun	^-68%`92.45 kB`	^-62%`32.45 kB`	^4x`58 ms`
google-closure-compiler	^-68%`92.70 kB`	^-61%`32.98 kB`	^399x`5,459 ms`
minify-js	^-69%`90.51 kB`	^-61%`33.20 kB`	^2x`27 ms`
jshrink	^-50%`144.14 kB`	^-52%`40.64 kB`	^38x`523 ms`

Artifact	Original size	Gzip size
vue v2.6.12 (Source)	`342.15 kB`	`89.52 kB`
Minifier	Minified size	Minzipped size	Time
swc	^-66%`115.52 kB`	^🏆-53%`42.41 kB`	^10x`237 ms`
terser	^-66%`116.83 kB`	^-52%`42.87 kB`	^89x`1,981 ms`
uglify-js	^🏆-67%`113.98 kB`	^-52%`42.89 kB`	^173x`3,838 ms`
babel-minify	^-66%`117.90 kB`	^-51%`43.83 kB`	^217x`4,831 ms`
google-closure-compiler	^-66%`115.60 kB`	^-51%`44.05 kB`	^266x`5,915 ms`
esbuild	^-65%`118.14 kB`	^-51%`44.24 kB`	^4x`89 ms`
uglify-js.no-compress	^-63%`126.14 kB`	^-50%`44.36 kB`	^26x`597 ms`
tdewolff-minify	^-66%`117.83 kB`	^-50%`44.37 kB`	^🏆`22 ms`
terser.no-compress	^-63%`126.58 kB`	^-50%`44.57 kB`	^34x`772 ms`
bun	^-64%`121.52 kB`	^-50%`44.98 kB`	^3x`70 ms`
minify-js	^-64%`121.77 kB`	^-48%`46.72 kB`	^1x`36 ms`
jshrink	^-42%`197.36 kB`	^-36%`56.87 kB`	^30x`675 ms`

Artifact	Original size	Gzip size
lodash v4.17.21 (Source)	`544.10 kB`	`96.40 kB`
Minifier	Minified size	Minzipped size	Time
uglify-js	^🏆-87%`68.24 kB`	^🏆-75%`24.56 kB`	^167x`3,205 ms`
google-closure-compiler	^-86%`73.47 kB`	^-74%`24.84 kB`	^294x`5,653 ms`
swc	^-87%`69.86 kB`	^-74%`25.06 kB`	^8x`168 ms`
terser	^-87%`71.05 kB`	^-74%`25.07 kB`	^91x`1,750 ms`
babel-minify	^-87%`72.37 kB`	^-74%`25.37 kB`	^202x`3,874 ms`
uglify-js.no-compress	^-86%`74.61 kB`	^-73%`25.76 kB`	^28x`552 ms`
esbuild	^-87%`72.48 kB`	^-73%`26.06 kB`	^2x`46 ms`
terser.no-compress	^-86%`75.67 kB`	^-73%`26.10 kB`	^36x`707 ms`
bun	^-86%`74.09 kB`	^-73%`26.31 kB`	^2x`38 ms`
tdewolff-minify	^-87%`72.47 kB`	^-73%`26.32 kB`	^🏆`19 ms`
jshrink	^-73%`148.78 kB`	^-63%`36.01 kB`	^26x`509 ms`
minify-js _{Invalid output: SyntaxError}	—	—	—

Artifact	Original size	Gzip size
d3 v6.3.1 (Source)	`555.77 kB`	`129.99 kB`
Minifier	Minified size	Minzipped size	Time
uglify-js	^-53%`263.91 kB`	^🏆-33%`86.73 kB`	^135x`7,234 ms`
swc	^-52%`265.50 kB`	^-33%`87.21 kB`	^9x`491 ms`
terser	^-52%`267.91 kB`	^-33%`87.71 kB`	^82x`4,415 ms`
uglify-js.no-compress	^-50%`275.35 kB`	^-32%`88.30 kB`	^22x`1,210 ms`
terser.no-compress	^-50%`276.47 kB`	^-32%`88.99 kB`	^37x`1,977 ms`
tdewolff-minify	^-51%`269.93 kB`	^-31%`89.70 kB`	^🏆`53 ms`
esbuild	^-51%`270.13 kB`	^-30%`90.41 kB`	^2x`139 ms`
bun	^-51%`273.45 kB`	^-30%`91.49 kB`	^1x`91 ms`
google-closure-compiler	^-51%`270.30 kB`	^-28%`93.48 kB`	^155x`8,321 ms`
minify-js	^🏆-53%`261.82 kB`	^-26%`95.58 kB`	^1x`83 ms`
babel-minify _{Failed to minify}	—	—	—
jshrink _{Invalid output: TypeError}	—	—	—

Artifact	Original size	Gzip size
terser v5.19.2 (Source)	`984.87 kB`	`188.36 kB`
Minifier	Minified size	Minzipped size	Time
uglify-js	^-55%`441.14 kB`	^🏆-36%`119.98 kB`	^136x`6,698 ms`
swc	^-55%`445.09 kB`	^-36%`120.00 kB`	^8x`400 ms`
terser	^-55%`447.48 kB`	^-36%`120.23 kB`	^83x`4,097 ms`
terser.no-compress	^-53%`463.03 kB`	^-36%`121.13 kB`	^35x`1,752 ms`
uglify-js.no-compress	^-53%`460.75 kB`	^-36%`121.27 kB`	^26x`1,291 ms`
tdewolff-minify	^-55%`445.90 kB`	^-36%`121.42 kB`	^🏆`49 ms`
google-closure-compiler	^🏆-56%`429.73 kB`	^-35%`122.89 kB`	^159x`7,838 ms`
esbuild	^-55%`448.07 kB`	^-35%`122.94 kB`	^2x`100 ms`
bun	^-54%`455.49 kB`	^-34%`123.81 kB`	^1x`61 ms`
jshrink	^-37%`619.05 kB`	^-25%`141.08 kB`	^35x`1,770 ms`
babel-minify _{Failed to minify}	—	—	—
minify-js _{Invalid output: SyntaxError}	—	—	—

Artifact	Original size	Gzip size
three v0.124.0 (Source)	`1.25 MB`	`247.75 kB`
Minifier	Minified size	Minzipped size	Time
swc	^-48%`643.15 kB`	^🏆-36%`157.73 kB`	^8x`640 ms`
uglify-js	^🏆-49%`642.22 kB`	^-36%`158.26 kB`	^113x`9,057 ms`
terser	^-48%`654.11 kB`	^-36%`158.98 kB`	^71x`5,725 ms`
babel-minify	^-48%`648.83 kB`	^-35%`161.70 kB`	^208x`16,635 ms`
google-closure-compiler	^-48%`644.45 kB`	^-35%`161.84 kB`	^124x`9,951 ms`
uglify-js.no-compress	^-46%`674.49 kB`	^-35%`162.17 kB`	^22x`1,796 ms`
terser.no-compress	^-46%`675.60 kB`	^-34%`162.35 kB`	^31x`2,502 ms`
esbuild	^-48%`646.76 kB`	^-34%`162.65 kB`	^1x`151 ms`
tdewolff-minify	^-48%`644.89 kB`	^-34%`163.91 kB`	^1x`87 ms`
bun	^-47%`662.23 kB`	^-33%`164.93 kB`	^🏆`80 ms`
minify-js	^-47%`660.81 kB`	^-32%`168.59 kB`	^1x`129 ms`
jshrink	^-24%`952.01 kB`	^-22%`192.43 kB`	^33x`2,673 ms`

Artifact	Original size	Gzip size
victory v35.8.4 (Source)	`2.14 MB`	`309.06 kB`
Minifier	Minified size	Minzipped size	Time
uglify-js	^-67%`702.67 kB`	^🏆-49%`157.52 kB`	^121x`11,422 ms`
swc	^-67%`708.00 kB`	^-49%`157.58 kB`	^9x`906 ms`
terser	^-66%`715.61 kB`	^-49%`158.05 kB`	^85x`8,084 ms`
tdewolff-minify	^-66%`718.74 kB`	^-47%`164.50 kB`	^🏆`94 ms`
terser.no-compress	^-64%`759.34 kB`	^-46%`165.72 kB`	^32x`3,055 ms`
uglify-js.no-compress	^-65%`756.53 kB`	^-46%`166.88 kB`	^23x`2,242 ms`
minify-js	^🏆-72%`607.42 kB`	^-46%`168.01 kB`	^1x`185 ms`
google-closure-compiler	^-67%`705.87 kB`	^-44%`174.20 kB`	^123x`11,581 ms`
esbuild	^-66%`724.14 kB`	^-42%`179.74 kB`	^2x`207 ms`
bun	^-66%`728.21 kB`	^-41%`181.17 kB`	^1x`111 ms`
babel-minify _{Failed to minify}	—	—	—
jshrink _{Invalid output: SyntaxError}	—	—	—

Artifact	Original size	Gzip size
echarts v5.1.1 (Source)	`3.20 MB`	`683.47 kB`
Minifier	Minified size	Minzipped size	Time
swc	^🏆-69%`993.45 kB`	^🏆-53%`319.77 kB`	^10x`1,770 ms`
terser	^-69%`1.00 MB`	^-53%`321.40 kB`	^76x`13,587 ms`
terser.no-compress	^-66%`1.07 MB`	^-52%`329.73 kB`	^32x`5,801 ms`
uglify-js.no-compress	^-67%`1.07 MB`	^-52%`330.46 kB`	^16x`3,003 ms`
esbuild	^-68%`1.01 MB`	^-52%`330.68 kB`	^2x`400 ms`
tdewolff-minify	^-68%`1.01 MB`	^-52%`331.30 kB`	^1x`199 ms`
bun	^-68%`1.03 MB`	^-51%`335.42 kB`	^🏆`177 ms`
minify-js	^-69%`1.01 MB`	^-50%`340.93 kB`	^1x`309 ms`
babel-minify _{Timed out}	—	—	—
google-closure-compiler _{Timed out}	—	—	—
jshrink _{Invalid output: TypeError}	—	—	—
uglify-js _{Timed out}	—	—	—

Artifact	Original size	Gzip size
antd v4.16.1 (Source)	`6.69 MB`	`825.74 kB`
Minifier	Minified size	Minzipped size	Time
swc	^🏆-68%`2.15 MB`	^🏆-45%`453.62 kB`	^9x`2,247 ms`
terser	^-66%`2.25 MB`	^-44%`458.47 kB`	^62x`14,895 ms`
tdewolff-minify	^-66%`2.30 MB`	^-43%`473.23 kB`	^🏆`239 ms`
terser.no-compress	^-64%`2.43 MB`	^-42%`476.68 kB`	^27x`6,643 ms`
uglify-js.no-compress	^-64%`2.42 MB`	^-42%`479.73 kB`	^18x`4,344 ms`
esbuild	^-66%`2.31 MB`	^-41%`488.09 kB`	^2x`560 ms`
bun	^-66%`2.30 MB`	^-41%`490.89 kB`	^1x`298 ms`
jshrink	^-33%`4.45 MB`	^-24%`625.76 kB`	^48x`11,513 ms`
babel-minify _{Timed out}	—	—	—
google-closure-compiler _{Timed out}	—	—	—
minify-js _{Invalid output: TypeError}	—	—	—
uglify-js _{Timed out}	—	—	—

Artifact	Original size	Gzip size
typescript v4.8.3 (Source)	`10.82 MB`	`1.87 MB`
Minifier	Minified size	Minzipped size	Time
swc	^🏆-70%`3.27 MB`	^🏆-55%`843.46 kB`	^10x`4,803 ms`
uglify-js.no-compress	^-68%`3.50 MB`	^-54%`866.64 kB`	^20x`9,235 ms`
tdewolff-minify	^-69%`3.33 MB`	^-53%`867.52 kB`	^🏆`452 ms`
terser.no-compress	^-68%`3.49 MB`	^-53%`869.36 kB`	^29x`13,186 ms`
minify-js	^-69%`3.31 MB`	^-52%`898.44 kB`	^3x`1,646 ms`
esbuild	^-68%`3.45 MB`	^-52%`902.92 kB`	^1x`881 ms`
babel-minify _{Timed out}	—	—	—
bun _{Invalid output: AssertionError}	—	—	—
google-closure-compiler _{Timed out}	—	—	—
jshrink _{Timed out}	—	—	—
terser _{Timed out}	—	—	—
uglify-js _{Timed out}	—	—	—

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