What powers color-blindness-test.com?
Last seen Aug 2026 · 23 technologies across 12 categories
Advertising
Google AdSense
since Oct 2025
Analytics
CDN
Cloudflare
since Oct 2025
Cookie compliance
Funding Choices
since Oct 2025
Font scripts
Google Font API
since Jun 2026
JavaScript frameworks
Miscellaneous
Performance
Priority Hints
since Oct 2025
Programming languages
Node.js
since Oct 2025
Security
reCAPTCHA
since Oct 2025
Tag managers
Google Tag Manager
since Dec 2025
UI frameworks
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
0.90 / 10 · ranked #14,547,751 of all domains
5 referring domains · OpenPageRank
Page
- Language: English
- CDN: Cloudflare
- Weight: 2.0 MB · 158 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.79.192, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 6,795,568
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Base UI Aug 2026
- detected Plausible Aug 2026
- detected TanStack Start Aug 2026
- detected Google Font API Jun 2026
- detected Google Tag Manager Dec 2025
- detected Cloudflare Browser Insights Nov 2025