The WEBGL_debug_renderer_info extension is part of the WebGL API and exposes two constants with information about the graphics driver for debugging purposes.

MDN Reference

interface WEBGL_debug_renderer_info {
    UNMASKED_RENDERER_WEBGL: 37446;
    UNMASKED_VENDOR_WEBGL: 37445;
}

Properties

UNMASKED_RENDERER_WEBGL
UNMASKED_VENDOR_WEBGL