Web/API/CanvasRenderingContext2D/font

The CanvasRenderingContext2D.font property of the Canvas 2D API specifies the current text style to use when drawing text. This string uses the same syntax as the CSS font specifier.

Syntax

ctx.font = value;

Options

value: A DOMString parsed as CSS font value. The default font is 10px sans-serif.

Examples

Using a custom font

In this example we use the font property to specify a custom font weight, size, and family.

HTML

<canvas id="canvas"></canvas>

JavaScript

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

ctx.font = 'bold 48px serif';
ctx.strokeText('Hello world', 50, 100);

Result

Loading fonts with the CSS Font Loading API

With the help of the FontFace API, you can explicitly load fonts before using them in a canvas.

let f = new FontFace('test', 'url(x)');

f.load().then(function() {
  // Ready to use the font in a canvas context
});

Specifications

Specification	Status	Comment
HTML Living StandardThe definition of 'CanvasRenderingContext2D.font' in that specification.	Living Standard

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`font`	Chrome Full support Yes	Edge Full support 12	Firefox Full support 3.5	IE Full support 9	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 4	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes

Legend

Full support: Full support

Gecko-specific notes

In Gecko-based browsers, such as Firefox, a non-standard and deprecated property ctx.mozTextStyle is implemented besides this property. Use ctx.font instead.
In Gecko, when setting a system font as the value of a canvas 2D context's font (e.g., menu), getting the font value used to fail to return the expected font (it returns nothing). This is fixed in Firefox's Quantum/Stylo parallel CSS engine, released in Firefox 57 (bug 1374885).