Web/API/HTMLCanvasElement/height

The HTMLCanvasElement.height property is a positive integer reflecting the height HTML attribute of the <canvas> element interpreted in CSS pixels. When the attribute is not specified, or if it is set to an invalid value, like a negative, the default value of 150 is used.

This is one of the two properties, the other being HTMLCanvasElement.width, that controls the size of the canvas.

Syntax

var pxl = canvas.height;
canvas.height = pxl;

Examples

Given this <canvas> element:

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

You can get the height of the canvas with the following code:

var canvas = document.getElementById('canvas');
console.log(canvas.height); // 300

Specifications

Specification	Status	Comment
HTML Living StandardThe definition of 'HTMLCanvasElement.height' in that specification.	Living Standard	No change since the latest snapshot, HTML5
HTML 5.1The definition of 'HTMLCanvasElement.height' in that specification.	Recommendation
HTML5The definition of 'HTMLCanvasElement.height' in that specification.	Recommendation	Snapshot of the HTML Living Standard containing the initial definition.

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
`height`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1.5	IE Full support 9	Opera Full support 9	Safari Full support 3	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0

Legend

Full support: Full support