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HTTP/2 protocol

- OTHER

Networking protocol for low-latency transport of content over the web. Originally started out from the SPDY protocol, now standardized as HTTP version 2.

Chrome

  1. 4 - 40: Not supported
  2. 41 - 50: Supported
  3. 51 - 122: Supported
  4. 123: Supported
  5. 124 - 126: Supported

Edge

  1. 12 - 18: Supported
  2. 79 - 122: Supported
  3. 123: Supported

Safari

  1. 3.1 - 8: Not supported
  2. 9 - 10.1: Partial support
  3. 11 - 17.3: Supported
  4. 17.4: Supported
  5. 17.5 - TP: Supported

Firefox

  1. 2 - 35: Not supported
  2. 36 - 52: Supported
  3. 53 - 123: Supported
  4. 124: Supported
  5. 125 - 127: Supported

Opera

  1. 9 - 27: Not supported
  2. 28 - 37: Supported
  3. 38 - 108: Supported
  4. 109: Supported

IE

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

Chrome for Android

  1. 123: Supported

Safari on iOS

  1. 3.2 - 8.4: Not supported
  2. 9 - 17.3: Supported
  3. 17.4: Supported
  4. 17.5: Supported

Samsung Internet

  1. 4: Supported
  2. 5 - 23: Supported
  3. 24: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

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

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 123: Supported

Firefox for Android

  1. 124: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported

HTTP/2 is only supported over TLS (HTTPS). See also the precursor of HTTP/2, the SPDY protocol, which has been deprecated and removed from most browsers, in favor of HTTP/2.

Resources:
Wikipedia article about HTTP/2
Browser support test