The WebGLActiveInfo interface is part of the WebGL API and represents the information returned by calling the WebGLRenderingContext.getActiveAttrib() and WebGLRenderingContext.getActiveUniform() methods.


The read-only name of the requested variable.
The read-only size of the requested variable.
The read-only type of the requested variable.


A WebGLActiveInfo object is returned by:

WebGLActiveInfo? getActiveAttrib(WebGLProgram? program, GLuint index); 
WebGLActiveInfo? getActiveUniform(WebGLProgram? program, GLuint index);
WebGLActiveInfo? getTransformFeedbackVarying(WebGLProgram? program, GLuint index)


Specification Status Comment
WebGL 1.0
The definition of 'WebGLActiveInfo' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 9 4.0 (2.0) 11 12 5.1
Available in workers No support 44 (44) [1] No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 25 (Yes) ? 12 8.1
Available in workers No support No support 44.0 (44) [1] No support No support No support

[1] This feature is behind a feature preference setting. In about:config, set gfx.offscreencanvas.enabled to true.

See also

Document Tags and Contributors

 Contributors to this page: fscholz, snnopy
 Last updated by: fscholz,