imagemagick-convert

Node.js wrapper for ImageMagick CLI for simple converting images.

Prerequisites

• Node.js >= 7.10.1
• ImageMagick >= 6.9.5

Installation

With NPM:

npm install --save imagemagick-convert

With Yarn:

yarn add imagemagick-convert

ImageMagick installation (see more details):

OS	Command
OS X	brew install imagemagick
Ubuntu/Debian	apt-get install imagemagick
Centos/RHEL	yum install ImageMagick
Alpine	apk add --update imagemagick

Example

import {readFileSync} from 'fs';
import {convert} from 'imagemagick-convert';

// somewhere in async function
const imgBuffer = await convert({
    srcData: readFileSync('./origin.jpg'),
    srcFormat: 'JPEG',
    width: 100,
    height: 100,
    resize: 'crop',
    format: 'PNG'
});

Original JPEG:

Converted to PNG and resized:

fit	fill	crop

API reference

convert(options: Object):Promise<Buffer> - converts images

Options:

Attribute	Type	Required	Default	Description
srcData	Buffer	*		source image
srcFormat	Dictionary		auto-detection	source file format (explicit specification), for more details see ImageMagick Supported Image Formats
width	Integer		source width	output image width in pixels
height	Integer		source height	output image height in pixels
resize	Enum		crop	style of resizing: crop, fit, fill
density	Integer		600	density/resolution for rendering an image from vector formats such as Postscript, PDF, WMF, SVG
background	String		none	background color or transparency for images
gravity	Dictionary		Center	gravity option, for more details see ImageMagick gravity options
format	Dictionary		source format	output file format, for more details see ImageMagick Supported Image Formats
quality	Integer		75	JPEG/MIFF/PNG compression level: 1 - 100
blur	Float		0	blur level: 0 - 1
rotate	Integer		0	rotating degrees
flip	Boolean		false	vertical flip