@postermywall/fabricjs-2

Fabric.js

A simple and powerful Javascript HTML5 canvas library.

• Website
• Old V5 documentation
• GOTCHAS
• Contributing, Developing and More

Features

• Out of the box interactions such as scale, move, rotate, skew, group...
• Built in shapes, controls, animations, image filters, gradients, patterns, brushes...
• JPG, PNG, JSON and SVG i/o
• Typed and modular
• Unit tested

Supported Browsers/Environments

Context	Supported Version	Notes
Firefox	✔️	58
Safari	✔️	11
Opera	✔️	chromium based
Chrome	✔️	64
Edge	✔️	chromium based
Edge Legacy	❌
IE11	❌
Node.js	✔️	Node.js installation

Fabric.js does not use polyfills by default, or tries to keep it at minimum. the browser version we support is determined by the level of canvas api we want to use and some js syntax. While JS can be easily transpiled, canvas API can't.

Installation

$ npm install fabric --save
# or use yarn
$ yarn add fabric
# or use pnpm
$ pnpm install fabric

Browser

See browser modules for using es6 imports in the browser or use a dedicated bundler.

Node.js

We strongly recommend to run your applications only LTS versions of node.

Said so the minimum supported version of node is 18. We bump up the minimum version of node with a Major release only when the dependencies force us to do so.

Fabric.js depends on node-canvas for a canvas implementation (HTMLCanvasElement replacement) and jsdom for a window implementation on node. This means that you may encounter node-canvas limitations and bugs.

Follow these instructions to get node-canvas up and running.

Quick Start

// v6
import { Canvas, Rect } from 'fabric'; // browser
import { StaticCanvas, Rect } from 'fabric/node'; // node

// v5
import { fabric } from 'fabric';

Plain HTML

<canvas id="canvas" width="300" height="300"></canvas>

<script src="https://cdn.jsdelivr.net/npm/fabric@6.4.3/dist/index.js"></script>
<script>
  const canvas = new fabric.Canvas('canvas');
  const rect = new fabric.Rect({
    top: 100,
    left: 100,
    width: 60,
    height: 70,
    fill: 'red',
  });
  canvas.add(rect);
</script>

React.js

import React, { useEffect, useRef } from 'react';
import * as fabric from 'fabric'; // v6
import { fabric } from 'fabric'; // v5

export const FabricJSCanvas = () => {
  const canvasEl = useRef<HTMLCanvasElement>(null);
  useEffect(() => {
    const options = { ... };
    const canvas = new fabric.Canvas(canvasEl.current, options);
    // make the fabric.Canvas instance available to your app
    updateCanvasContext(canvas);
    return () => {
      updateCanvasContext(null);
      canvas.dispose();
    }
  }, []);

  return <canvas width="300" height="300" ref={canvasEl}/>;
};

Node.js

import http from 'http';
import * as fabric from 'fabric/node'; // v6
import { fabric } from 'fabric'; // v5

const port = 8080;

http
  .createServer((req, res) => {
    const canvas = new fabric.Canvas(null, { width: 100, height: 100 });
    const rect = new fabric.Rect({ width: 20, height: 50, fill: '#ff0000' });
    const text = new fabric.Text('fabric.js', { fill: 'blue', fontSize: 24 });
    canvas.add(rect, text);
    canvas.renderAll();
    if (req.url === '/download') {
      res.setHeader('Content-Type', 'image/png');
      res.setHeader('Content-Disposition', 'attachment; filename="fabric.png"');
      canvas.createPNGStream().pipe(res);
    } else if (req.url === '/view') {
      canvas.createPNGStream().pipe(res);
    } else {
      const imageData = canvas.toDataURL();
      res.writeHead(200, '', { 'Content-Type': 'text/html' });
      res.write(`<img src="${imageData}" />`);
      res.end();
    }
  })
  .listen(port, (err) => {
    if (err) throw err;
    console.log(
      `> Ready on http://localhost:${port}, http://localhost:${port}/view, http://localhost:${port}/download`,
    );
  });

See our ready to use templates.

Other Solutions

Project	Description
Three.js	3D graphics
PixiJS	WebGL renderer
Konva	Similar features
html-to-image	HTML to image/canvas

More Resources

• WIP new fabricjs.com
• Demos on fabricjs.com
• Fabric.js on Twitter
• Fabric.js on CodeTriage
• Fabric.js on Stack Overflow
• Fabric.js on jsfiddle
• Fabric.js on Codepen.io

Credits

• kangax
• asturur on Twitter
• ShaMan123
• melchiar
• Ernest Delgado for the original idea of manipulating images on canvas
• Maxim "hakunin" Chernyak for ideas, and help with various parts of the library throughout its life
• Sergey Nisnevich for help with geometry logic
• Stefan Kienzle for help with bugs, features, documentation, GitHub issues
• Shutterstock for the time and resources invested in using and improving Fabric.js
• and all the other contributors