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    morpheus-image-resize

    1.0.4 • Public • Published

    Morpheus Image Resize

    Morpheus Image Resize is a JavaScript library for image resizing. It allows you to resize images to given size by using the HTML5 Canvas API.

    NPM

    You can install Morpheus Image Resize by using npm.

    npm install --save-dev morpheus-image-resize
    

    Installation

    You can simply import Morpheus class and call static resize method to resize an image.

    import Morpheus from 'morpheus-image-resize';
    
    Morpheus.resize('image.jpg', {
        scale: 50
    })
    .then(canvas => Morpheus.toImage(canvas))
    .then(image => {
        document.body.appendChild(image);
    });
    

    You can also add the script file into your HTML.

    <!DOCTYPE html>
    <html lang="en">
    <head></head>
    <body>
    <script src="/node_modules/morpheus-image-resize/dist/morpheus.min.js"></script>
    <script>
    Morpheus.resize('image.jpg', {
        scale: 50
    })
    .then(canvas => Morpheus.toImage(canvas))
    .then(image => {
        document.body.appendChild(image);
    });
    </script>
    </body>
    </html>
    

    Demo

    This repository contains a simple demo project that allows you to give it a try and see the results.

    If you want to run the demo, clone the repository and go to the project directory.

    $ git clone https://github.com/cevadtokatli/morpheus-image-resize.git
    $ cd morpheus-image-resize/demo/dist
    

    Open the demo file in your browser.

    $ open index.html
    

    Methods

    All methods of Morpheus are static and return a Promise to be chained.

    Resize

    static Promise resize(Image, Options)

    Resizes given image and returns a Promise that resolves a canvas element which can be converted to a file, image, blob or base64 code by using Morpheus' convert methods (toImage, toFile, toBlob, toBase64).

    Method Arguments

    Image {HTMLImageElement|HTMLCanvasElement|File|String}

    Image to be resized. It can be given in five different ways.

    An Image Element:

    var img = new Image();
    img.addEventListener('load', function() {
        Morpheus.resize(img);
    });
    img.src = "image.jpg";
    
    Morpheus.resize(document.querySelector('img'));
    

    A Canvas Element:

    var canvas = document.querySelector('canvas');
    canvas.getContext('2d').drawImage(img, 0, 0, img.width, img.height);
    
    Morpheus.resize(canvas);
    

    A File:

    var file = document.querySelector('input[type="file"]').files[0];
    Morpheus.resize(file)
    

    An Image Source (String):

    Morpheus.resize('path/image.jpg');
    

    A Base64 Code (String):

    Morpheus.resize('data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQAB...');
    
    Options {Object}

    New size or scale.

    Options Properties:

    Width {Number}
    It must be a px value. If value is null, resizes width according to height.

    Height {Number}
    It must be a px value. If value is null, resizes height according to width.

    Scale {Number}
    It scales images in both dimensions at given ratio.

    Convert Methods

    static Promise toImage(HTMLCanvasElement canvas)

    Converts the given canvas element to an image element. Returns a Promise that resolves an image element.

    static Promise toFile(HTMLCanvasElement canvas, String fileName)

    Converts the given canvas element to a file. Returns a Promise that resolves a file.

    static Promise toBlob(HTMLCanvasElement canvas)

    Converts the given canvas element to a blob. Returns a Promise that resolves a blob.

    static Promise toBase64(HTMLCanvasElement canvas)

    Converts the given canvas element to base64. Returns a Promise that resolves base64.

    IE Support

    IE 10 is not supported and patches to fix problems will not be accepted.

    License

    Morpheus Image Resize is provided under the MIT License.

    Install

    npm i morpheus-image-resize

    DownloadsWeekly Downloads

    100

    Version

    1.0.4

    License

    MIT

    Unpacked Size

    275 kB

    Total Files

    9

    Last publish

    Collaborators

    • cevadtokatli