What powers html5andcss3.org?
Last seen Sep 2026 · 27 technologies across 16 categories
Advertising
Google AdSense
since Jan 2016
Analytics
Google Analytics
since Jun 2018
Development
Turbopack
since Sep 2026
Font scripts
Font Awesome
since Jan 2016
JavaScript frameworks
JavaScript graphics
JavaScript libraries
prettyPhoto
since Jan 2016
Miscellaneous
PaaS
Vercel
since Sep 2026
Performance
Priority Hints
since Sep 2026
Programming languages
Security
HSTS
since Sep 2026
Tag managers
Google Tag Manager
since May 2019
UI frameworks
Animate.css
since Jan 2016
Base UI
since Sep 2026
Bootstrap
since Jan 2016
Radix UI
since Sep 2026
Tailwind CSS
since Sep 2026
Web Servers
Apache HTTP Server
since Jan 2016
LiteSpeed
since Feb 2019
Widgets
OWL Carousel
since Jan 2016
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Open Page Rank
1.26 / 10 · ranked #9,157,296 of all domains
5 referring domains · OpenPageRank
Page
- Language: English
- CDN: Vercel
- Weight: 1.3 MB · 60 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Amazon Web Services (64.29.17.1)
- DNS: Vercel
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 1,156,561, 3 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| html5andcss3.org | 26 |
| www.html5andcss3.org | 8 |