Can I use
?

headers HTTP header: Expect-CT

IE

  1. 6 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 118: Supported
  2. 119: Supported

Firefox

  1. 2 - 119: Not supported
  2. 120: Not supported
  3. 121 - 123: Not supported

Chrome

  1. 4 - 60: Not supported
  2. 61 - 118: Supported
  3. 119: Supported
  4. 120 - 122: Supported

Safari

  1. 3.1 - 17.0: Not supported
  2. 17.1: Not supported
  3. 17.2: Not supported
  4. TP: Support unknown

Opera

  1. 10 - 47: Not supported
  2. 48 - 103: Supported
  3. 104: Supported

Safari on iOS

  1. 3.2 - 17.0: Not supported
  2. 17.1: Not supported
  3. 17.2: Not supported

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 119: Not supported

Opera Mobile

  1. 12 - 12.1: Not supported
  2. 73: Supported

Chrome for Android

  1. 119: Supported

Firefox for Android

  1. 119: Not supported

UC Browser for Android

  1. 15.5: Support unknown

Samsung Internet

  1. 4 - 7.4: Not supported
  2. 8.2 - 22: Supported
  3. 23: Supported

QQ Browser

  1. 13.1: Support unknown

Baidu Browser

  1. 13.18: Support unknown

KaiOS Browser

  1. 2.5: Support unknown
  2. 3: Support unknown