Why Is Canvas Not Working On Safari

If you happen to be a web developer or use Safari, you might come across instances where the HTML5 Canvas, a valuable resource for designing graphics and animations, fails to operate properly on Safari. This article will delve into common problems that could potentially lead to this issue and provide potential resolutions.

Potential Issues

Some of the most common issues that could lead to Canvas not working properly on Safari could be due to the following reasons:

  • Browser Compatibility – While HTML5 and the Canvas API are generally well supported across modern browsers, Safari has been known to lag behind others in terms of implementing newer features.
  • Security Restrictions – Safari has stringent security protocols, and certain Canvas functionalities may be blocked by the browser’s security settings.
  • Rendering Issues – Sometimes, Safari may face issues rendering the Canvas, especially when complex shapes and animations are involved.

Possible Solutions

After identifying the potential issues, here are some solutions you might consider:

1. Update Your Browser

Ensure you’re using the latest version of Safari. Apple frequently releases updates that fix bugs and compatibility issues. To check for updates, go to the Apple menu > About Safari > Software Update.

2. Adjust Security Settings

If the issue is due to Safari’s security settings, it can sometimes be resolved by adjusting these settings. Navigate to Safari > Preferences > Privacy and consider disabling the Prevent cross-site tracking option. However, be aware that this may have implications for your privacy and security.

3. Use a Polyfill

If Safari does not support a particular Canvas feature, you can use a polyfill. A polyfill is a piece of code that provides the technology that you expect the browser to provide natively.

    if (!CanvasRenderingContext2D.prototype.ellipse) {
        CanvasRenderingContext2D.prototype.ellipse = function (x, y, radiusX, radiusY, rotation, startAngle, endAngle, anticlockwise) {
            this.translate(x, y);
            this.scale(radiusX, radiusY);
            this.arc(0, 0, 1, startAngle, endAngle, anticlockwise);

In the above code, a polyfill is created for the ellipse() method if it is not already available.


While it can be frustrating when Canvas isn’t working correctly on Safari, understanding the potential causes of these issues and how to resolve them can help ensure a smoother, more successful development experience. Happy coding!