node-imagickal

node wrapper for ImageMagick commands

Installation

npm install imagickal

Examples

	var im = require('imagickal');

	//get image dimensions
	im.dimensions('image.jpg').then(function (dim) {
		console.log(dim.width);
		console.log(dim.height);
	});

	//get image dimensions and type
	im.identify('image.jpg').then(function (data) {
		console.log(data);
	});

	//Add true as second argument on identify to check if the image is corrupt.
	im.identify('image.jpg', true).then(function (data) {
		console.log(data);
	});

	//Don't like using promises, use regular node style callbacks for all functions that returns promises.
	im.identify('image.jpg', function (err, data) {
		console.log(data);
	});

	//Using streams instead of filepath
	im.identify(fs.createReadStream('image.jpg'), function (err, data) {
		console.log(data);
	});

	im.transform(fs.createReadStream('image.jpg'), fs.createWriteStream('out.jpg', {encoding: 'binary'}), {strip: true}).then(function () {
		console.log('Done')
	});


	//transform image with action object,
	//actions is applied in the same order as they are recevied
	var actions =  {
		resize: { width: 100 },
		crop: { width: 10, height: 10, x: 10, y: 10 },
		quality: 90,
		strip: true
	};

	im.transform('src.jpg', 'dst.jpg', actions).then(function () {
		console.log('Done')
	});

	//transform image with command object
	im.commands()
		.resize({ width: 100 })
		.crop({ width: 10, height: 10, x: 10, y: 10 })
		.quality(90)
		.strip()
		.exec('src.jpg', 'dst.jpg').then(function () {
			console.log('done');
		});

	//specify executable path
	im.commands({ executable: 'MAGICK_MEMORY_LIMIT=256MB /tmp/convert' }).exec('src.jpg', 'dst.png');

	//or set global for im.
	im.setDefaults({ executable: 'MAGICK_MEMORY_LIMIT=256MB /tmp/convert' });

Available image actions / commands

• rotate Rotate image, properties { angle: 0, x: 0, y: 0 }
• crop - Crop image, properties { width: 2560, height: 1013, x: 0, y: 0 }
• extent - Directly adjust image size, properties { width: 2560, height: 1013 }
• resize - Resize image, properties { width: 470, height: 186, flag: '>' }, available flags <,>,!,^ for more info read about them in the imagemagick resize docs
• sharpen - Sharpen image, properties { mode: 'variable' }, available modes are: light, moderate, strong, extreme, off.
• strip - Strip image of all profiles and comments.
• quality - Compression quality, defaults to 85.

Run Tests

npm test

Enable debugging output

Set DEBUG environment variable to imagickal

DEBUG=imagickal node ./app.js