An indicator button for HTTP/3, QUIC and HTTP/2 support by each website. This extension is an alternative to HTTP/2 and SPDY indicators: https://www.crxsoso.com/webstore/detail/http2-and-spdy-indicator/mpbpobfflnpcgagjijhmgnchggcjblin It use Navigation Timing 2 instead of deprecated chrome.loadTimes() API. Source code: https://github.com/pd4d10/http-indicator