HTTP/3 is a relatively new protocol and is currently only supported by a limited number of browsers. Here are some examples:
- Google Chrome supports HTTP/3 since version 86
- Mozilla Firefox has supported HTTP/3 since version 89
- Apple Safari does not currently support HTTP/3
- Microsoft Edge has supported HTTP/3 since version 93
It is important to note that HTTP/3 support in browsers is still relatively new and may change as the protocol evolves.