HTTP/3
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
- Indexed sites
- 22,498
- Share of Miscellaneous
- 42%
HTTP/3 is the more common of the two in our index: it runs on 22,498 websites against 68 for X-Clacks-Overhead, and 10 sites use both. Counts come from real scans, not vendor claims.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
X-Clacks-Overhead is a non-standard HTTP header used to transmit tribute messages within server responses.
10 sites run both HTTP/3 and X-Clacks-Overhead. That is 15% of the sites using X-Clacks-Overhead, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.