WEBGL_lose_context WebGL extensionBaseline · Widely available

The WEBGL_lose_context extension for WebGL 1.0 and 2.0 contexts simulates losing and restoring a WebGLRenderingContext or WebGL2RenderingContext.

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Apr 30, 2018. Widely available since Oct 30, 2020.

How to use ↓Compare browsers

Browser support

DesktopChrome

1–25Not supported

26+Supportedsince Mar 26, 2013

Current: 155

Edge

12–16Not supported

17+Supportedsince Apr 30, 2018

Current: 154

Firefox

1–21Not supported

22+Supportedsince Jun 25, 2013

Current: 157

Safari

1–7Not supported

8+Supportedsince Oct 16, 2014

Current: 27

MobileChrome Android

18–25Not supported

26+Supportedsince Apr 3, 2013

Current: 155

Firefox Android

4–21Not supported

22+Supportedsince Jun 25, 2013

Current: 157

Safari iOS

1–7Not supported

8+Supportedsince Sep 17, 2014

Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

Full syntax and examples are on MDN: WEBGL lose context.

Feature detection

JS · check before using

if ("WEBGL_lose_context" in globalThis) {
  // WEBGL_lose_context is available
} else {
  // load a polyfill or use a fallback
}

Documentation (MDN)

Specification

registry.khronos.org/webgl/extensions/WEBGL_lose_context ↗

Sub-features

Support for each part of the feature (3). The overall table above shows when the whole feature works.

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
WEBGL_lose_context	26	17	22	8	26	22	8
WEBGL_lose_context.loseContext	26	17	22	8	26	22	8
WEBGL_lose_context.restoreContext	26	17	22	8	26	22	8