We're live on Product Hunt. If you have found StackScope useful, a comment would mean a lot. See the launch

← All technologies

Sites using HTTP/3

HTTP/3 over QUIC support, advertised via the Alt-Svc response header. Common signal: large CDNs (Cloudflare, Fastly, Vercel, Akamai) all advertise h3 on every response. Surfaced as a top row on the /trends chart.

#1 of 15 in Protocol Tracked since Apr 2026 Last seen: Aug 29, 2026 Website: cloudflare.com
Stackdar alerts

Get told when a new site ships with HTTP/3.

Stackdar watches every launch we detect and sends you the ones using HTTP/3, by email, Slack or webhook. On every plan, from £15 a month.

See how alerts work

1,024,974 sites

988,101 found by StackScope, 36,873 via launch platforms

StackScope Wider Web 825,983 StackScope Discovery (Indie) 162,118 Product Hunt 28,847 PeerPush 3,278 Hacker News 2,964 Other 1,784
  • StackScope Wider Web 825,983
  • StackScope Discovery (Indie) 162,118
  • Product Hunt 28,847
  • PeerPush 3,278
  • Hacker News 2,964
  • Other 1,784
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 24.0% -15.1pp
Most used with Cloudflare, Google Search Console, Cloudflare DNS
Top product types E-commerce, Health, Developer Tools
Green hosting 82% vs 45% avg

HTTP/3 has been detected on 1,024,974 launches we've crawled. The 7-day rolling share is 24.0%, down 15.1 percentage points from last week. Most recent detection: grabhelpers - Hire Helpers and Manage Local Service Work, 3 days ago.

It's most commonly paired with Cloudflare, Google Search Console, and Cloudflare DNS. By product type, the launches using it are most often E-commerce (16%), Health (13%), and Developer Tools (10%). By estimated origin, the United States leads (34%), ahead of India (15%). By domain ending, launches using it are 6.6 times as likely as the average launch to live on a .store domain.

What kind of products ship with HTTP/3

326,028 launches

E-commerce
15.67%
Health
12.57%
Developer Tools
10.22%
Productivity
8.63%
Finance
8.32%
Education
8.20%
Marketing
7.63%
Games
6.21%
Content
5.71%
AI
5.55%
Social
4.04%
Design
2.89%
Hiring & HR
2.04%
Crypto
1.34%
Directory
0.96%

Domain endings using HTTP/3

1,025,015 sites

  • .com 46.50%
  • .in 5.90%
  • .online 5.69%
  • .app 4.98%
  • .site 3.94%
  • .store 3.20%
  • .org 2.99%
  • .co 2.59%
  • .uk 2.55%
  • .xyz 2.32%
  • .ca 2.31%
  • .ai 2.21%
  • .dev 1.92%
  • .net 1.89%
  • .io 1.78%

Country

6,222 of 1,024,974 sites, where we are confident of the country.

  • United States United States 33.83%
  • India India 14.59%
  • United Kingdom United Kingdom 9.85%
  • Canada Canada 3.01%
  • Australia Australia 2.54%
  • Netherlands Netherlands 2.51%
  • Germany Germany 2.38%
  • France France 2.17%
  • Singapore Singapore 1.77%
  • Japan Japan 1.54%
  • Spain Spain 1.33%
  • United Arab Emirates United Arab Emirates 1.32%
  • Pakistan Pakistan 1.09%
  • Poland Poland 1.08%
  • Brazil Brazil 1.01%

Share of new sites using HTTP/3

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.

24.0%
last 7 days
-15.1pp vs prior week
1,024,974
sites all time
since Apr 2026
HTTP/3 daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 67% 33% 0% Apr May Jun Jul Aug Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Weekly averages before this point, daily after. Jun 3 · 275 / 714 = 38.5% Jun 4 · 244 / 599 = 40.7% Jun 5 · 249 / 581 = 42.9% Jun 6 · 183 / 436 = 42.0% Jun 7 · 161 / 404 = 39.9% Jun 8 · 205 / 515 = 39.8% Jun 9 · 351 / 876 = 40.1% Jun 10 · 291 / 722 = 40.3% Jun 11 · 216 / 577 = 37.4% Jun 12 · 194 / 449 = 43.2% Jun 13 · 171 / 380 = 45.0% Jun 14 · 141 / 345 = 40.9% Jun 15 · 225 / 532 = 42.3% Jun 16 · 407 / 1052 = 38.7% Jun 17 · 375 / 907 = 41.3% Jun 18 · 264 / 674 = 39.2% Jun 19 · 246 / 547 = 45.0% Jun 20 · 181 / 443 = 40.9% Jun 21 · 144 / 383 = 37.6% Jun 22 · 227 / 576 = 39.4% Jun 23 · 385 / 900 = 42.8% Jun 24 · 291 / 737 = 39.5% Jun 25 · 249 / 618 = 40.3% Jun 26 · 222 / 534 = 41.6% Jun 27 · 188 / 431 = 43.6% Jun 28 · 173 / 383 = 45.2% Jun 29 · 230 / 503 = 45.7% Jun 30 · 325 / 801 = 40.6% Jul 1 · 333 / 795 = 41.9% Jul 2 · 231 / 604 = 38.2% Jul 3 · 201 / 499 = 40.3% Jul 4 · 176 / 411 = 42.8% Jul 5 · 159 / 367 = 43.3% Jul 6 · 233 / 551 = 42.3% Jul 7 · 479 / 1171 = 40.9% Jul 8 · 6028 / 12589 = 47.9% Jul 9 · 11767 / 23745 = 49.6% Jul 10 · 11349 / 22551 = 50.3% Jul 11 · 7923 / 15979 = 49.6% Jul 12 · 10950 / 20291 = 54.0% Jul 13 · 10736 / 20922 = 51.3% Jul 14 · 10601 / 20408 = 51.9% Jul 15 · 9209 / 17242 = 53.4% Jul 16 · 7501 / 14264 = 52.6% Jul 17 · 10524 / 19732 = 53.3% Jul 18 · 12271 / 22700 = 54.1% Jul 19 · 13703 / 26075 = 52.6% Jul 20 · 11843 / 22586 = 52.4% Jul 21 · 11350 / 21648 = 52.4% Jul 22 · 12270 / 23202 = 52.9% Jul 23 · 8553 / 16863 = 50.7% Jul 24 · 6582 / 12855 = 51.2% Jul 25 · 4549 / 8946 = 50.8% Jul 26 · 10662 / 19976 = 53.4% Jul 27 · 17729 / 33864 = 52.4% Jul 28 · 19589 / 38220 = 51.3% Jul 29 · 24346 / 50103 = 48.6% Jul 30 · 21984 / 43951 = 50.0% Jul 31 · 25750 / 51109 = 50.4% Aug 1 · 25530 / 50469 = 50.6% Aug 2 · 25181 / 49660 = 50.7% Aug 3 · 24385 / 48190 = 50.6% Aug 4 · 17466 / 37325 = 46.8% Aug 5 · 17373 / 32705 = 53.1% Aug 6 · 20057 / 36578 = 54.8% Aug 7 · 20835 / 37887 = 55.0% Aug 8 · 21989 / 39680 = 55.4% Aug 9 · 18072 / 34206 = 52.8% Aug 10 · 15610 / 28846 = 54.1% Aug 11 · 16641 / 32016 = 52.0% Aug 12 · 17219 / 33477 = 51.4% Aug 13 · 25748 / 49907 = 51.6% Aug 14 · 25791 / 51427 = 50.2% Aug 15 · 26293 / 51491 = 51.1% Aug 16 · 26409 / 51802 = 51.0% Aug 17 · 20751 / 41399 = 50.1% Aug 18 · 28249 / 53842 = 52.5% Aug 19 · 25558 / 49411 = 51.7% Aug 20 · 37008 / 66827 = 55.4% Aug 21 · 50102 / 90355 = 55.5% Aug 22 · 50871 / 91512 = 55.6% Aug 23 · 9394 / 90225 = 10.4% Aug 24 · 2281 / 78827 = 2.9% Aug 25 · 24839 / 69245 = 35.9% Aug 26 · 34494 / 65050 = 53.0% Aug 27 · 24846 / 83366 = 29.8% Aug 28 · 45642 / 83292 = 54.8% Aug 29 · 5926 / 84133 = 7.0% Aug 30 · 0 / 92043 = 0.0% Aug 31 · 0 / 88440 = 0.0%
Mar 30, 2026 90 days Aug 31, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.

Protocol leaders

Tool % of launches % of category
#1 – HTTP/3 Current page 41.47% 99.99%
#2 – Tor Onion Service <0.01% 0.01%
#3 United States Semantic Standard <0.01% <0.01%
#4 I2P <0.01% <0.01%
#5 ▼1 TDM Reservation Protocol <0.01% <0.01%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Protocol tool. All 15 in Protocol →

Often used with

Tool Launches
Cloudflare 27,304
Google Search Console 24,422
Cloudflare DNS 22,870
Tailwind CSS 16,947
Google Analytics 16,376

Tools most often detected on the same launches as HTTP/3.

Recent launches we can show

198,991 of the 1,024,974 sites using HTTP/3 are product launches we list individually. The other 825,983 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

grabhelpers - Hire Helpers and Manage Local Service Work Aug 29, 2026 Hiring & HR FormPort - Create, publish and collect form responses Aug 29, 2026 Productivity Symbiote Aug 29, 2026 AI THE SALES FLOOR — The Back Office Built for Growing Moving Companies Aug 29, 2026 Zap Logo — remove logos from shipping labels, free Aug 29, 2026 Design Post Flows · Agendamento de posts em massa Aug 29, 2026 Marketing Vertflow — YouTube analytics & real per-video revenue Aug 29, 2026 Marketing Bloom Realms — Grow Your Realm. Defend What Blooms. Aug 29, 2026 Games Find It From a Photo — FindMyWear Aug 29, 2026 YOUR COFFEE — その豆、その道具で、いちばんおいしい淹れ方。 Aug 29, 2026 Clinent | Software para Clínicas Odontológicas | Agenda, WhatsApp y Facturación Aug 29, 2026 N3XUS — Welcome Home. Aug 29, 2026

Showing the most recent 12 of 198,991.

The StackScope API serves all 1,024,974 sites using HTTP/3, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.