Can I use
?

Ogg/Theora video format

- OTHER

Free lossy video compression format.

Chrome

  1. ✅ 4 - 119: Supported
  2. ❌ 120 - 135: Disabled by default
  3. ❌ 136: Disabled by default
  4. ❌ 137 - 139: Disabled by default

Edge

  1. ❌ 12 - 16: Not supported (but has polyfill available)
  2. ✅ 17 - 121: Supported
  3. ❌ 122 - 135: Disabled by default
  4. ❌ 136: Disabled by default

Safari

  1. ❌ 3.1 - 18.4: Not supported
  2. ❌ 18.5: Not supported
  3. ❌ TP: Not supported

Firefox

  1. ❌ 2 - 3: Not supported
  2. ✅ 3.5 - 129: Supported
  3. ❌ 130 - 137: Not supported
  4. ❌ 138: Not supported
  5. ❌ 139 - 141: Not supported

Opera

  1. ❌ 9 - 10.1: Not supported
  2. ✅ 10.5 - 105: Supported
  3. ❌ 106 - 116: Disabled by default
  4. ❌ 117: Disabled by default

IE

  1. ❌ 5.5 - 8: Not supported
  2. ❌ 9 - 10: Not supported (but has polyfill available)
  3. ❌ 11: Not supported (but has polyfill available)

Chrome for Android

  1. ❌ 136: Not supported

Safari on iOS

  1. ❌ 3.2 - 18.4: Not supported
  2. ❌ 18.5: Not supported

Samsung Internet

  1. ❌ 4 - 26: Not supported
  2. ❌ 27: Not supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ❌ 80: Not supported

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 136: Not supported

Firefox for Android

  1. ✅ 137: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported
Resources:
Firefox bug: Investigate removing Theora support
Chrome Platform Status: Deprecate and remove Theora support
Wikipedia article