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/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

unzip pako b

108K/s

zip fflate b

37K/s

unzip fflate b

31K/s

zip pako b

18K/s

unzip fflate a

765/s

unzip pako a

545/s

zip pako a

131/s

zip fflate a

125/s

View exact numbers

Test name	Executions per second
✓ unzip pako b	107,939 Ops/sec
zip fflate b	37,188 Ops/sec
unzip fflate b	31,488 Ops/sec
zip pako b	17,957 Ops/sec
unzip fflate a	765 Ops/sec
unzip pako a	545 Ops/sec
zip pako a	131 Ops/sec
zip fflate a	125 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)