The WebGLRenderingContext.getSupportedExtensions() method returns a list of all the supported WebGL extensions.

None.

An Array of strings with all the supported WebGL extensions.

const canvas = document.getElementById("canvas");
gl = canvas.getContext("webgl");

const extensions = gl.getSupportedExtensions();
// Array [ 'ANGLE_instanced_arrays', 'EXT_blend_minmax', … ]

See also the WebGLRenderingContext.getExtension() method to get a specific extension object.

Extensions for the WebGL API are registered in the WebGL Extension Registry. They are also listed here.

• WebGLRenderingContext.getExtension()
• webglreport.com