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Sites using HSTS

HTTP Strict-Transport-Security (RFC 6797): site forbids HTTP downgrade.

#1 of 249 in Security Tracked since Apr 2026 Last seen: Sep 3, 2026 Website: developer.mozilla.org
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1,243,598 sites

1,187,044 found by StackScope, 56,554 via launch platforms

StackScope Wider Web 912,740 StackScope Discovery (Indie) 274,304 Product Hunt 46,167 PeerPush 4,380 Hacker News 3,555 Other 2,452
  • StackScope Wider Web 912,740
  • StackScope Discovery (Indie) 274,304
  • Product Hunt 46,167
  • PeerPush 4,380
  • Hacker News 3,555
  • Other 2,452
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 47.9% +1.9pp
Most used with Cloudflare, Tailwind CSS, Google Fonts
Top product types E-commerce, Health, Productivity
Green hosting 32% vs 45% avg

HSTS has been detected on 1,243,598 launches we've crawled. The 7-day rolling share is 47.9%, up 1.9 percentage points from last week. Most recent detection: Galene — Supervision and release for legal AI, today.

It's most commonly paired with Cloudflare, Tailwind CSS, and Google Fonts. By product type, the launches using it are most often E-commerce (15%), Health (13%), and Productivity (9%). By estimated origin, the United States leads (35%), ahead of India (14%). By domain ending, launches using it are 5.4 times as likely as the average launch to live on a .store domain. The 56,352 scored launches using HSTS average a StackScope score of 6.8 out of 10, against 6.4 across all launches we score.

What kind of products ship with HSTS

443,454 launches

E-commerce
14.90%
Health
13.17%
Productivity
8.85%
Finance
8.60%
Developer Tools
8.60%
Marketing
8.56%
Education
8.37%
Content
5.75%
AI
5.65%
Games
4.61%
Social
4.44%
Design
3.25%
Hiring & HR
2.54%
Crypto
1.71%
Directory
1.00%

Domain endings using HSTS

1,240,242 sites

  • .com 52.32%
  • .app 7.15%
  • .online 3.91%
  • .in 3.29%
  • .org 2.64%
  • .co 2.60%
  • .store 2.57%
  • .site 2.40%
  • .uk 2.21%
  • .ai 2.21%
  • .ca 2.16%
  • .dev 2.13%
  • .xyz 2.10%
  • .io 2.07%
  • .net 1.66%

Country

9,583 of 1,243,598 sites, where we are confident of the country.

  • United States United States 35.38%
  • India India 13.89%
  • United Kingdom United Kingdom 10.58%
  • Canada Canada 3.22%
  • France France 2.94%
  • Australia Australia 2.90%
  • Germany Germany 2.41%
  • Netherlands Netherlands 2.06%
  • Spain Spain 1.54%
  • Singapore Singapore 1.28%
  • Japan Japan 1.19%
  • Brazil Brazil 1.17%
  • United Arab Emirates United Arab Emirates 1.03%
  • Romania Romania 0.99%
  • Poland Poland 0.96%

Share of new sites using HSTS

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

47.9%
last 7 days
+1.9pp vs prior week
1,243,598
sites all time
since Apr 2026
HSTS 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. 78% 39% 0% Apr May Jun Jul Aug Sep 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 5 · 357 / 581 = 61.4% Jun 6 · 255 / 436 = 58.5% Jun 7 · 250 / 404 = 61.9% Jun 8 · 308 / 515 = 59.8% Jun 9 · 550 / 876 = 62.8% Jun 10 · 424 / 722 = 58.7% Jun 11 · 368 / 577 = 63.8% Jun 12 · 282 / 449 = 62.8% Jun 13 · 228 / 380 = 60.0% Jun 14 · 208 / 345 = 60.3% Jun 15 · 323 / 532 = 60.7% Jun 16 · 677 / 1052 = 64.4% Jun 17 · 542 / 907 = 59.8% Jun 18 · 411 / 674 = 61.0% Jun 19 · 327 / 547 = 59.8% Jun 20 · 243 / 443 = 54.9% Jun 21 · 228 / 383 = 59.5% Jun 22 · 357 / 576 = 62.0% Jun 23 · 582 / 900 = 64.7% Jun 24 · 454 / 737 = 61.6% Jun 25 · 358 / 618 = 57.9% Jun 26 · 326 / 534 = 61.0% Jun 27 · 262 / 431 = 60.8% Jun 28 · 233 / 383 = 60.8% Jun 29 · 287 / 503 = 57.1% Jun 30 · 495 / 801 = 61.8% Jul 1 · 500 / 795 = 62.9% Jul 2 · 363 / 604 = 60.1% Jul 3 · 303 / 499 = 60.7% Jul 4 · 241 / 411 = 58.6% Jul 5 · 219 / 367 = 59.7% Jul 6 · 329 / 551 = 59.7% Jul 7 · 689 / 1171 = 58.8% Jul 8 · 6241 / 12590 = 49.6% Jul 9 · 11006 / 23749 = 46.3% Jul 10 · 10402 / 22553 = 46.1% Jul 11 · 7459 / 15986 = 46.7% Jul 12 · 10469 / 20292 = 51.6% Jul 13 · 10310 / 20930 = 49.3% Jul 14 · 9853 / 20415 = 48.3% Jul 15 · 7988 / 17245 = 46.3% Jul 16 · 6830 / 14268 = 47.9% Jul 17 · 9420 / 19731 = 47.7% Jul 18 · 10631 / 22704 = 46.8% Jul 19 · 12001 / 26088 = 46.0% Jul 20 · 10455 / 22590 = 46.3% Jul 21 · 9886 / 21654 = 45.7% Jul 22 · 10465 / 23207 = 45.1% Jul 23 · 8017 / 16868 = 47.5% Jul 24 · 5883 / 12858 = 45.8% Jul 25 · 4188 / 8949 = 46.8% Jul 26 · 8931 / 19983 = 44.7% Jul 27 · 15372 / 33877 = 45.4% Jul 28 · 16713 / 38225 = 43.7% Jul 29 · 22300 / 50116 = 44.5% Jul 30 · 20114 / 43962 = 45.8% Jul 31 · 23135 / 51136 = 45.2% Aug 1 · 22604 / 50524 = 44.7% Aug 2 · 22037 / 49744 = 44.3% Aug 3 · 21091 / 48208 = 43.8% Aug 4 · 17181 / 37349 = 46.0% Aug 5 · 16561 / 32718 = 50.6% Aug 6 · 18129 / 36602 = 49.5% Aug 7 · 19118 / 37902 = 50.4% Aug 8 · 20301 / 39694 = 51.1% Aug 9 · 17544 / 34228 = 51.3% Aug 10 · 13616 / 28877 = 47.2% Aug 11 · 15665 / 32038 = 48.9% Aug 12 · 16389 / 33504 = 48.9% Aug 13 · 22686 / 49964 = 45.4% Aug 14 · 24105 / 51447 = 46.9% Aug 15 · 24433 / 51530 = 47.4% Aug 16 · 24847 / 51851 = 47.9% Aug 17 · 19404 / 41466 = 46.8% Aug 18 · 24840 / 53965 = 46.0% Aug 19 · 23113 / 49485 = 46.7% Aug 20 · 30019 / 66891 = 44.9% Aug 21 · 41313 / 90419 = 45.7% Aug 22 · 41682 / 91548 = 45.5% Aug 23 · 41818 / 90281 = 46.3% Aug 24 · 37640 / 78964 = 47.7% Aug 25 · 32506 / 69435 = 46.8% Aug 26 · 29537 / 65108 = 45.4% Aug 27 · 40590 / 83441 = 48.6% Aug 28 · 39036 / 83426 = 46.8% Aug 29 · 39329 / 84344 = 46.6% Aug 30 · 44791 / 92526 = 48.4% Aug 31 · 42775 / 89912 = 47.6% Sep 1 · 44202 / 90746 = 48.7% Sep 2 · 46299 / 95107 = 48.7%
Mar 30, 2026 90 days Sep 2, 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.

Security leaders

Tool % of launches % of category
#1 – HSTS Current page 47.23% 91.20%
#2 – Cloudflare Bot Management 11.26% 21.74%
#3 – Google reCAPTCHA 1.82% 3.51%
#4 – DDoS-Guard 0.09% 0.18%
#5 ▲1 Anubis 0.07% 0.13%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Security tool.HSTS is typically used alongside Cloudflare Bot Management rather than instead of it. All 249 in Security →

Often used with

Tool Sites
Cloudflare 517,170
Tailwind CSS 443,257
Google Fonts 419,411
Vite 388,930
Vercel 380,640

Tools most often detected on the same sites as HSTS.

Recent launches we can show

330,858 of the 1,243,598 sites using HSTS are product launches we list individually. The other 912,740 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

Galene — Supervision and release for legal AI Sep 3, 2026 Dodge It All – Free One-Tap Browser Game Sep 3, 2026 Games SpendVeto — AI Agent Payment Governance for x402 (Open Source) Sep 3, 2026 Home · Tebdil Sep 3, 2026 E-commerce Bombay Cafe Map — find a Mumbai cafe you can actually work from Sep 3, 2026 Générateur d’itinéraires de voyage sur mesure - Routaya Sep 3, 2026 Productivity TFA Points Tracker | Texas Debate State Qualification Rankings Sep 3, 2026 Agent X-Ray Sep 3, 2026 ChitthiBhejo — send a card that feels like a letter Sep 3, 2026 EasyMaths — 10 minutes par jour pour automatiser tes bases en maths Sep 3, 2026 ImpactFlow | Strategy implementation and practical PMEL Sep 3, 2026 Finance AI Job Matcher · vagas remotas de tech Sep 3, 2026

Showing the most recent 12 of 330,858.

The StackScope API serves all 1,243,598 sites using HSTS, 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.