zopfli.js

About

Porting Zopfli to JavaScript with Emscripten.

Usage

Use one in "bin" directory.

• zopfli.min.js: Deflate + Zlib + Gzip
• zopfli.raw.min.js: Deflate
• zopfli.zlib.min.js: Zlib
• zopfli.gzip.min.js: Gzip

Compression

RawDeflate

/** @type {(Array.<number>|Uint8Array)} */
var plain = [1, 2, 3, 4];

/** @type {Zopfli.Deflate} */
var compressor = new Zopfli.RawDeflate(plain);

/** @type {Uint8Array} */
var compressed = compressor.compress();

Zlib

/** @type {(Array.<number>|Uint8Array)} */
var plain = [1, 2, 3, 4];

/** @type {Zopfli.Deflate} */
var compressor = new Zopfli.Deflate(plain);

/** @type {Uint8Array} */
var compressed = compressor.compress();

Gzip

/** @type {(Array.<number>|Uint8Array)} */
var plain = [1, 2, 3, 4];

/** @type {Zopfli.Deflate} */
var compressor = new Zopfli.Gzip(plain);

/** @type {Uint8Array} */
var compressed = compressor.compress();

Compression Option

Second argument of constructor functions.

{
    'iterations': number // Zopfli iterations parameter (Default: 15)
}

How to Build

Requirement

• Ant 1.8+
• JRE 1.6+
• Emscripten's Dependencies

Build

Use "ant" command.

$ ant [target]

Build target

target | generate file | implementation --------|----------------------|------------- debug | zopfli.debug.min.js | - plain | zopfli.plain.min.js | - deflate | zopfli.raw.min.js | Raw Deflate zlib | zopfli.zlib.min.js | ZLIB Deflate gzip | zopfli.gzip.min.js | GZIP all | * | default target

License

Apache License 2.0