---
title: "HTTP/3 Adoption 2026: 21.6% of Top 1M Sites - PageSpeed Matters"
url: https://www.pagespeedmatters.com/resources/data-studies/http-3-adoption
description: "21.6% of top 1M homepages (168,654 of 782,570) load over HTTP/3, 61.7% over HTTP/2 and 16.7% still over HTTP/1.1, while 40.4% advertise HTTP/3."
lang: en
---

HTTP/3 Adoption 2026: 21.6% of Top 1M Sites (https://www.pagespeedmatters.com/resources/data-studies/http-3-adoption)

21.6% of top 1M homepages (168,654 of 782,570) load over HTTP/3, 61.7% over HTTP/2 and 16.7% still over HTTP/1.1, while 40.4% advertise HTTP/3.

HTTP/3 share of homepages by tier

Top 10K 25.9%

Top 100K 25.5%

Rest of top 1M 21.1%

Source: PageSpeed Matters. HTTP Archive top 1M crawl, Sept 2026, mobile.

One lab crawl from one location; repeat visitors may connect over HTTP/3 more often.

Source: HTTP/3 Adoption 2026: 21.6% of Top 1M Sites - PageSpeed Matters (https://www.pagespeedmatters.com/resources/data-studies/http-3-adoption)