Can I use
?

headers HTTP header: Expect-CT

IE

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

Edge

  1. 12 - 91: Supported
  2. 92: Supported

Firefox

  1. 2 - 89: Support unknown
  2. 90: Support unknown
  3. 91 - 92: Support unknown

Chrome

  1. 4 - 60: Not supported
  2. 61 - 91: Supported
  3. 92: Supported
  4. 93 - 95: Supported

Safari

  1. 3.1 - 14: Support unknown
  2. 14.1: Support unknown
  3. 15 - TP: Support unknown

Opera

  1. 10 - 47: Not supported
  2. 48 - 76: Supported
  3. 77: Supported

Safari on iOS

  1. 3.2 - 14.4: Support unknown
  2. 14.5: Support unknown

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 92: Not supported

Opera Mobile

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

Chrome for Android

  1. 92: Supported

Firefox for Android

  1. 90: Support unknown

UC Browser for Android

  1. 12.12: Support unknown

Samsung Internet

  1. 4 - 7.4: Not supported
  2. 8.2 - 13.0: Supported
  3. 14.0: Supported

QQ Browser

  1. 10.4: Support unknown

Baidu Browser

  1. 7.12: Support unknown

KaiOS Browser

  1. 2.5: Support unknown