OffscreenCanvas

- LS

OffscreenCanvas allows canvas drawing to occur with no connection to the DOM and can be used inside workers.

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 84: Supported
  3. 85: Supported

Firefox

  1. 2 - 43: Not supported
  2. 44 - 79: Disabled by default
  3. 80: Disabled by default
  4. 81 - 82: Disabled by default

Chrome

  1. 4 - 57: Not supported
  2. 58 - 68: Disabled by default
  3. 69 - 84: Supported
  4. 85: Supported
  5. 86 - 88: Supported

Safari

  1. 3.1 - 13.1: Not supported
  2. 14: Not supported
  3. TP: Not supported

Opera

  1. 9 - 44: Not supported
  2. 45 - 63: Disabled by default
  3. 64 - 69: Supported
  4. 70: Supported

iOS Safari

  1. 3.2 - 13.7: Not supported
  2. 14.0: Not supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Supported

Blackberry Browser

  1. 7: Not supported
  2. 10: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 46: Not supported

Chrome for Android

  1. 85: Supported

Firefox for Android

  1. 79: Disabled by default

IE Mobile

  1. 10: Not supported
  2. 11: Not supported

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4 - 9.2: Not supported
  2. 10.1 - 11.2: Supported
  3. 12.0: Supported

QQ Browser

  1. 10.4: Not supported

Baidu Browser

  1. 7.12: Not supported

KaiOS Browser

  1. 2.5: Disabled by default
Resources:
MDN article
WebGL off the main thread - Mozilla Hacks article