CSS3 font-kerning

- CR

Controls the usage of the kerning information (spacing between letters) stored in the font. Note that this only affects OpenType fonts with kerning information, it has no effect on other fonts.

IE

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

Edge

  1. 12 - 18: Not supported
  2. 79: Supported
  3. 80: Supported

Firefox

  1. 2 - 23: Not supported
  2. 24 - 33: Disabled by default
  3. 34 - 73: Supported
  4. 74: Supported
  5. 75 - 76: Supported

Chrome

  1. 4 - 28: Not supported
  2. 29 - 32: Supported
  3. 33 - 79: Supported
  4. 80: Supported
  5. 81 - 83: Supported

Safari

  1. 3.1 - 6.1: Not supported
  2. 7 - 9: Supported
  3. 9.1 - 12.1: Supported
  4. 13: Supported
  5. 13.1 - TP: Supported

Opera

  1. 9 - 15: Not supported
  2. 16 - 19: Supported
  3. 20 - 65: Supported
  4. 66: Supported

iOS Safari

  1. 3.2 - 7.1: Not supported
  2. 8 - 13.2: Supported
  3. 13.3: Supported
  4. 13.4: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4: Supported
  3. 4.4.3: Supported
  4. 80: Supported

Blackberry Browser

  1. 7: Not supported
  2. 10: Supported

Opera Mobile

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

Chrome for Android

  1. 80: Supported

Firefox for Android

  1. 68: Supported

IE Mobile

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

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 10.1: Supported
  2. 11.1: Supported

QQ Browser

  1. 1.2: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: Supported

Browsers with support for font feature settings can also set kerning value.

Resources:
MDN Web Docs - CSS font-kerning