Can I use
?

headers HTTP header: Expect-CT

IE

  1. 6 - 10: Support unknown
  2. 11: Support unknown

Edge

  1. 12 - 95: Supported
  2. 96: Supported

Firefox

  1. 2 - 93: Support unknown
  2. 94: Support unknown
  3. 95 - 96: Support unknown

Chrome

  1. 4 - 60: Not supported
  2. 61 - 95: Supported
  3. 96: Supported
  4. 97 - 99: Supported

Safari

  1. 3.1 - 15: Support unknown
  2. 15.1: Support unknown
  3. TP: Support unknown

Opera

  1. 10 - 47: Not supported
  2. 48 - 80: Supported
  3. 81: Supported

Safari on iOS

  1. 3.2 - 14.8: Support unknown
  2. 15: Support unknown

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 96: Not supported

Opera Mobile

  1. 12 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 96: Supported

Firefox for Android

  1. 94: Support unknown

UC Browser for Android

  1. 12.12: Support unknown

Samsung Internet

  1. 4 - 7.4: Not supported
  2. 8.2 - 14.0: Supported
  3. 15.0: Supported

QQ Browser

  1. 10.4: Support unknown

Baidu Browser

  1. 7.12: Support unknown

KaiOS Browser

  1. 2.5: Support unknown