Can I use
?

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 - 130: Supported
  4. ✅ 131: Supported
  5. ✅ 132 - 134: Supported

Edge

  1. ✅ 12 - 18: Supported
  2. ✅ 79 - 130: Supported
  3. ✅ 131: Supported

Safari

  1. ❌ 3.1 - 8: Not supported
  2. ◐ 9 - 10.1: Partial support
  3. ✅ 11 - 18.0: Supported
  4. ✅ 18.1: Supported
  5. ✅ 18.2 - TP: Supported

Firefox

  1. ❌ 2 - 35: Not supported
  2. ✅ 36 - 52: Supported
  3. ✅ 53 - 131: Supported
  4. ✅ 132: Supported
  5. ✅ 133 - 135: Supported

Opera

  1. ❌ 9 - 27: Not supported
  2. ✅ 28 - 37: Supported
  3. ✅ 38 - 113: Supported
  4. ✅ 114: Supported

IE

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

Chrome for Android

  1. ✅ 131: Supported

Safari on iOS

  1. ❌ 3.2 - 8.4: Not supported
  2. ✅ 9 - 18.0: Supported
  3. ✅ 18.1: Supported
  4. ✅ 18.2: Supported

Samsung Internet

  1. ✅ 4: Supported
  2. ✅ 5 - 25: Supported
  3. ✅ 26: 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. ✅ 131: Supported

Firefox for Android

  1. ✅ 132: 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