GraphicsMagick Image Manipulation For Nodejs
Posted By : Sakshi Gadia | 31-May-2018
To manipulate images like cropped, compressed or resized etc. on the server side, we can use gm node module.
It can be accessed by:
npm install gm
To crop images:
Use gm module it takes width, height parameter to crop images
const gm = require('gm');
gm('/path/to/image').crop(300,400) // width, height
.write('/path/to/output', (err) => {
if(err){
console.log(err)
}
console.log(done)
})
To resize images:
gm('/path/to/image').resize(width, null)
The above code will resize the width by maintaining the aspect ratio.
Same as to resize the height
gm('/path/to/image').resize(null, height)
To compress images:
Compress type: None, BZip, Fax, Group4, JPEG, Lossless, LZW, RLE, Zip, or LZMA
gm('path/to/image').compress(type)
To use images by url, use request npm:
var request = require('request');
var url = "www.abc.com/pic.jpg"
gm(request(url))
.write('/path/to/image', function (err) {
if (!err) console.log('done');
});
Note:
There are various method of gm module
You can see the link for more details
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About Author
Sakshi Gadia
An experienced MEAN Stack developer having good knowledge in Nodejs, MongoDb. Apart from these in my spare time, I enjoy playing chess and ready to learn new technologies.