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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

unzip pako b

90K/s

zip fflate b

39K/s

zip pako b

16K/s

unzip fflate b

13K/s

unzip fflate a

525/s

unzip pako a

520/s

zip pako a

154/s

zip fflate a

149/s

View exact numbers

Test name	Executions per second
✓ unzip pako b	90,324 Ops/sec
zip fflate b	38,680 Ops/sec
zip pako b	15,630 Ops/sec
unzip fflate b	12,797 Ops/sec
unzip fflate a	525 Ops/sec
unzip pako a	520 Ops/sec
zip pako a	154 Ops/sec
zip fflate a	149 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)