jpegtran 1.2.90 (part of libjpeg-turbo) Node.js wrapper that makes it seamlessly available as a local dependency on OS X, Linux and Windows. Most commonly used to losslessly minify JPEG images.

libjpeg-turbo is a derivative of libjpeg that uses SIMD instructions (MMX, SSE2, NEON) to accelerate baseline JPEG compression and decompression on x86, x86-64, and ARM systems. On such systems, libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal.

var execFile = require('child_process').execFile;
var jpegtranPath = require('jpegtran-bin').path;

execFile(jpegtranPath, ['-outfile', 'output.jpg', 'input.jpg'], function(err, stdout, stderr) {
	console.log('Image minified');
});

You can also run directly from ./node_modules/.bin/jpegtran-bin

Note to self on how to update the binaries.

Run npm install to build the binary.

• Download the Windows files 32/64-bit (GCC compiled) on a Windows machine
• Run the downloaded file to extract
• Go to the bin folder at the destination and copy jpegtran.exe and libjpeg-62.dll

Everything excluding the binaries licensed under the BSD license and copyright Google.

libjpeg-turbo licensed under the BSD license and copyright dcommander.