ImgUri

Easily convert local/network image file to data uri scheme.

Installation

$ npm install --save imguri

Usage

var imguri = require('imguri');

// ..

var resources = [
    'test/test.png',
    'test/nofile',
    'http://www.vnykmshr.com/images/favicon.ico',
    'http://www.vnykmshr.com/images/whois.png',
    'http://www.vnykmshr.com/'
];

var options = {
    force: false
};

imguri.encode(resources, options, console.log);

// ..
{
    'test/nofile': {
        err: [Error: no such file: test/nofile],
        data: undefined
    },

    'test/test.png': {
        err: null,
        data: 'data:image/png;base64,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'
    },

    'http://www.vnykmshr.com/images/whois.png': {
        err: [Error: Size limit exceeded: 11202 > 4096 Set options.force to override],
        data: undefined
    },

    'http://www.vnykmshr.com/': {
        err: [Error: Not an image, content - type: text / html, link: http: //www.vnykmshr.com/],
        data: undefined
    },

    'http://www.vnykmshr.com/images/favicon.ico': {
        err: null,
        data: 'data:binary;base64,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'
    }
}

The encode api returns a map of file being encoded to its result. If the specified input file is larger than 4KB, it sets an err, you can set options.force to true to encode larger files. It is generally not a good idea to encode larger image files to data-uri as it increased the page load time.

You can use result[file].data as source to img tag on html pages to load images.

Example

Please refer to test/index.js for a sample working code example.