Run results for: gzip 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/139.0.0.0 Safari/537.36 Edg/139.0.0.0

Browser: Chrome 139

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

unzip fflate b

1.9M/s

unzip pako b

77K/s

zip fflate b

34K/s

zip pako b

15K/s

unzip fflate a

551/s

unzip pako a

356/s

zip pako a

137/s

zip fflate a

126/s

View exact numbers

Test name	Executions per second
✓ unzip fflate b	1,853,727 Ops/sec
unzip pako b	77,204 Ops/sec
zip fflate b	33,801 Ops/sec
zip pako b	14,624 Ops/sec
unzip fflate a	551 Ops/sec
unzip pako a	356 Ops/sec
zip pako a	137 Ops/sec
zip fflate a	126 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.gzip(a)
var cb = pako.gzip(b)

Tests:

zip pako a
pako.gzip(a)
zip fflate a
fflate.gzipSync(a)
zip pako b
pako.gzip(b)
zip fflate b
fflate.gzipSync(b)
unzip pako a
pako.ungzip(ca);
unzip fflate a
fflate.gunzipSync(ca);
unzip pako b
pako.ungzip(cb)
unzip fflate b
fflate.gunzipSync(cb)