node v0.10.26, 1mb sample:
deflate-dankogai x 4.73 ops/sec ±0.82% (15 runs sampled)
deflate-gildas x 4.58 ops/sec ±2.33% (15 runs sampled)
deflate-imaya x 3.22 ops/sec ±3.95% (12 runs sampled)
! deflate-pako x 6.99 ops/sec ±0.51% (21 runs sampled)
deflate-pako-string x 5.89 ops/sec ±0.77% (18 runs sampled)
deflate-pako-untyped x 4.39 ops/sec ±1.58% (14 runs sampled)
* deflate-zlib x 14.71 ops/sec ±4.23% (59 runs sampled)
inflate-dankogai x 32.16 ops/sec ±0.13% (56 runs sampled)
inflate-imaya x 30.35 ops/sec ±0.92% (53 runs sampled)
! inflate-pako x 69.89 ops/sec ±1.46% (71 runs sampled)
inflate-pako-string x 19.22 ops/sec ±1.86% (49 runs sampled)
inflate-pako-untyped x 17.19 ops/sec ±0.85% (32 runs sampled)
* inflate-zlib x 70.03 ops/sec ±1.64% (81 runs sampled)
node v0.11.12, 1mb sample:
deflate-dankogai x 5.60 ops/sec ±0.49% (17 runs sampled)
deflate-gildas x 5.06 ops/sec ±6.00% (16 runs sampled)
deflate-imaya x 3.52 ops/sec ±3.71% (13 runs sampled)
! deflate-pako x 11.52 ops/sec ±0.22% (32 runs sampled)
deflate-pako-string x 9.53 ops/sec ±1.12% (27 runs sampled)
deflate-pako-untyped x 5.44 ops/sec ±0.72% (17 runs sampled)
* deflate-zlib x 14.05 ops/sec ±3.34% (63 runs sampled)
inflate-dankogai x 42.19 ops/sec ±0.09% (56 runs sampled)
inflate-imaya x 79.68 ops/sec ±1.07% (68 runs sampled)
! inflate-pako x 97.52 ops/sec ±0.83% (80 runs sampled)
inflate-pako-string x 45.19 ops/sec ±1.69% (57 runs sampled)
inflate-pako-untyped x 24.35 ops/sec ±2.59% (40 runs sampled)
* inflate-zlib x 60.32 ops/sec ±1.36% (69 runs sampled)
zlib's test is partially affected by marshalling (that make sense for inflate only). You can change deflate level to 0 in benchmark source, to investigate details. For deflate level 6 results can be considered as correct.
Install:
node.js:
npm install pako
browser:
bower install pako
Example & API
Full docs - http://nodeca.github.io/pako/
var pako =require('pako');// Deflate//var input =newUint8Array();//... fill input data herevar output =pako.deflate(input);// Inflate (simple wrapper can throw exception on broken stream)//var compressed =newUint8Array();//... fill data to uncompress heretry {var result =pako.inflate(compressed);} catch (err) {console.log(err);}//// Alternate interface for chunking & without exceptions//var inflator =newpako.Inflate();inflator.push(chunk1,false);inflator.push(chunk2,false);...inflator.push(chunkN,true); // true -> last chunkif (inflator.err) {console.log(inflator.msg);}var output =inflator.result;
Sometime you can wish to work with strings. For example, to send big objects as json to server. Pako detects input data type. You can force output to be string with option { to: 'string' }.
var pako =require('pako');var test = { my:'super', puper: [456,567], awesome:'pako' };var binaryString =pako.deflate(JSON.stringify(test), { to:'string' });//// Here you can do base64 encode, make xhr requests and so on.//var restored =JSON.parse(pako.inflate(binaryString, { to:'string' }));
Notes
Pako does not contain some specific zlib functions:
High level inflate/deflate wrappers (classes) may not support some flush modes. Those should work: Z_NO_FLUSH, Z_FINISH, Z_SYNC_FLUSH.
pako for enterprise
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