node-qimagemagick

You can install this module using npm

npm install qimagemagick --save

Requirements

• ImageMagick CLI:
  • Debian/Ubuntu: sudo apt-get install imagemagick

Examples

Convert and show info

1import { QIM } from "qimagemagick";
2// const { QIM } = require("qimagemagick");
3
4async function main() {
5    let image = await QIM.read_to_buffer('./example-images/coffee.png');
6    
7    let info = await QIM.identify(image).catch(reason => {console.log(reason)});
8    console.log(info);
9    
10    let blob = await QIM.convert(image, {
11        format: 'jpg',
12        resize: '50%'
13    }).catch(reason => {
14        console.log('error: ', reason);
15        process.exit(1);
16    });
17    
18    let converted_info = await QIM.identify(blob).catch(reason => {console.log(reason)});
19    console.log(converted_info);
20}
21
22main();

Output

1Info {
2  width: 1909,
3  height: 1066,
4  page_width: 1909,
5  page_height: 1066,
6  offset_x: 0,
7  offset_y: 0,
8  format: 'PNG',
9  depth: '8-bit',
10  colorspace: 'sRGB',
11  size: '1.8288MiB'
12}
13Info {
14  width: 955,
15  height: 533,
16  page_width: 955,
17  page_height: 533,
18  offset_x: 0,
19  offset_y: 0,
20  format: 'JPEG',
21  depth: '8-bit',
22  colorspace: 'sRGB',
23  size: '181.8047KiB'
24}

Crop from center

1import { QIM } from "qimagemagick";
2// const { QIM } = require("qimagemagick");
3
4async function main() {
5    let image = await QIM.read_to_buffer('./example-images/coffee.png');
6
7    let blob = await QIM.convert(image, {
8        gravity: 'Center',
9        crop: '300x300+0+0'
10    }).catch(reason => {
11        console.log('error: ', reason);
12        process.exit(1);
13    });
14    
15    let converted_info = await QIM.identify(blob).catch(reason => {console.log(reason)});
16    console.log(converted_info);
17}
18main();

Output

1Info {
2  width: 300,
3  height: 300,
4  page_width: 1909,
5  page_height: 1066,
6  offset_x: 804,
7  offset_y: 383,
8  format: 'PNG',
9  depth: '8-bit',
10  colorspace: 'sRGB',
11  size: '36.2393KiB'
12}

Reading images

• From local file

  1let buffer = await QIM.read_to_buffer('./coffee.png');
  2let info = await QIM.identify('./coffee.png');

• From URL

  1let buffer = await QIM.read_to_buffer('https://placedog.net/640/480');
  2let info = await QIM.identify('https://placedog.net/640/480');

• From Buffer

  1let buffer = await QIM.read_to_buffer('https://placedog.net/640/480');
  2let info = await QIM.identify(buffer);

More Examples

• Runkit - Polaroid

• Runkit - Annotate

Full Documentation

To see the full documentation visit: ImageMagick – Command-line Processing