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    Konva.js is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.
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    Financial Contributors on Open Collective npm version Build Status Build StatusCDNJS version

    Konva is an HTML5 Canvas JavaScript framework that enables high performance animations, transitions, node nesting, layering, filtering, caching, event handling for desktop and mobile applications, and much more.

    You can draw things onto the stage, add event listeners to them, move them, scale them, and rotate them independently from other shapes to support high performance animations, even if your application uses thousands of shapes. Served hot with a side of awesomeness.

    This repository began as a GitHub fork of ericdrowell/KineticJS.

    Quick Look

    <script src=""></script>
    <div id="container"></div>
      var stage = new Konva.Stage({
        container: 'container',
        width: window.innerWidth,
        height: window.innerHeight,
      // add canvas element
      var layer = new Konva.Layer();
      // create shape
      var box = new Konva.Rect({
        x: 50,
        y: 50,
        width: 100,
        height: 50,
        fill: '#00D2FF',
        stroke: 'black',
        strokeWidth: 4,
        draggable: true,
      // add cursor styling
      box.on('mouseover', function () { = 'pointer';
      box.on('mouseout', function () { = 'default';

    Browsers support

    Konva works in all modern mobile and desktop browsers. A browser need to be capable to run javascript code from ES2015 spec. For older browsers you may need polyfills for missing functions.

    At the current moment Konva doesn't work in IE11 directly. To make it work you just need to provide some polyfills such as Array.prototype.find, String.prototype.trimLeft, String.prototype.trimRight, Array.from.

    Loading and installing Konva

    Konva supports UMD loading. So you can use all possible variants to load the framework into your project:

    Load Konva via classical <script> tag from CDN:

    <script src=""></script>

    Install with npm:

    npm install konva --save
    // The modern way (e.g. an ES6-style import for webpack, parcel)
    import Konva from 'konva';

    Typescript usage

    Add DOM definitions into your tsconfig.json:

      "compilerOptions": {
        "lib": [

    3 Minimal bundle

    import Konva from 'konva/lib/Core';
    // Now you have a Konva object with Stage, Layer, FastLayer, Group, Shape and some additional utils function.
    // Also core currently already have support for drag&drop and animations.
    // BUT there are no shapes (rect, circle, etc), no filters.
    // but you can simply add anything you need:
    import { Rect } from 'konva/lib/shapes/Rect';
    // importing a shape will automatically inject it into Konva object
    var rect1 = new Rect();
    // or:
    var shape = new Konva.Rect();
    // for filters you can use this:
    import { Blur } from 'konva/lib/filters/Blur';

    4 NodeJS env

    In order to run konva in nodejs environment you also need to install canvas package manually. Konva will use it for 2d canvas API.

    npm install konva canvas

    Then you can use the same Konva API and all Konva demos will work just fine. You just don't need to use container attribute in your stage.

    import Konva from 'konva';
    const stage = new Konva.Stage({
      width: 500,
      height: 500,
    // then all regular Konva code will work


    Change log


    Building the Konva Framework

    To make a full build run npm run build. The command will compile all typescript files, combine then into one bundle and run minifier.


    Konva uses Mocha for testing.

    • If you need run test only one time run npm run test.
    • While developing it is easy to use npm start. Just run it and go to http://localhost:1234/unit-tests.html. The watcher will rebuild the bundle on any change.

    Konva is covered with hundreds of tests and well over a thousand assertions. Konva uses TDD (test driven development) which means that every new feature or bug fix is accompanied with at least one new test.

    Generate documentation

    Run npx gulp api which will build the documentation files and place them in the api folder.

    Pull Requests

    I'd be happy to review any pull requests that may better the Konva project, in particular if you have a bug fix, enhancement, or a new shape (see src/shapes for examples). Before doing so, please first make sure that all of the tests pass (npm run test).


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