The CanvasRenderingContext2D.fillRect() method of the Canvas 2D API draws a rectangle that is filled according to the current fillStyle.

The path created by this method is automatically closed, so any subsequent fill() or stroke() calls will have no effect on it.


void ctx.fillRect(x, y, width, height);

The fillRect() method draws a filled rectangle whose starting point is at (x, y) and whose size is specified by width and height. The fill style is determined by the current fillStyle attribute.


The x-axis coordinate of the rectangle's starting point.
The y-axis coordinate of the rectangle's starting point.
The rectangle's width. Positive values are to the right, and negative to the left.
The rectangle's height. Positive values are down, and negative are up.


A simple filled rectangle

This example draws a filled green rectangle using the fillRect() method.


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


var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.fillStyle = 'green';
ctx.fillRect(10, 10, 150, 100);


Filling the whole canvas

This code snippet fills the entire canvas with a rectangle. This is often useful for creating a background, on top of which other things may then be drawn.

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.fillRect(0, 0, canvas.width, canvas.height);


Specification Status Comment
HTML Living Standard
The definition of 'CanvasRenderingContext2D.fillRect' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes


Full support  
Full support

See also

Document Tags and Contributors

Contributors to this page: mfluehr, fscholz, Sheppy, nmve, erikadoyle
Last updated by: mfluehr,