Run results for: zlib compatible compression libraries comparison - pako vs fflate

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

zip fflate b

146K/s

unzip fflate b

64K/s

unzip pako b

57K/s

zip pako b

50K/s

unzip pako a

753/s

zip pako a

258/s

unzip fflate a

174/s

zip fflate a

135/s

View exact numbers

Test name	Executions per second
✓ zip fflate b	146,298 Ops/sec
unzip fflate b	64,093 Ops/sec
unzip pako b	56,878 Ops/sec
zip pako b	49,596 Ops/sec
unzip pako a	753 Ops/sec
zip pako a	258 Ops/sec
unzip fflate a	174 Ops/sec
zip fflate a	135 Ops/sec

HTML Preparation code:

<script src="https://unpkg.com/fflate"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pako/2.1.0/pako.es5.min.js"></script>

Script Preparation code:

const enc = new TextEncoder();
var a = new Uint8Array([...Array(1000000).keys()]);
var b = enc.encode('The quick brown fox jumps over the lazy dog')
var ca = pako.deflate(a)
var cb = pako.deflate(b)

Tests:

zip pako a
pako.deflate(a)
zip fflate a
fflate.zlibSync(a)
zip pako b
pako.deflate(b)
zip fflate b
fflate.zlibSync(b)
unzip pako a
pako.inflate(ca);
unzip fflate a
fflate.unzlibSync(ca);
unzip pako b
pako.inflate(cb)
unzip fflate b
fflate.unzlibSync(cb)