What powers yukai.dev?
Last seen Oct 2026 · 12 technologies across 8 categories
Advertising
Google AdSense
since Aug 2026
Analytics
Google Analytics
since Aug 2026
Caching
Varnish
since Aug 2026
CDN
Miscellaneous
Open Graph
since Aug 2026
PWA
since Aug 2026
PaaS
GitHub Pages
since Aug 2026
Performance
Priority Hints
since Sep 2026
Security
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 85% phone
- 15% desktop
Taiwan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.19 / 10 · ranked #3,110,467 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Chinese (Taiwan)
- CDN: Fastly
- Weight: 1.0 MB · 33 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.35.108, IPv6)
- DNS: Cloudflare DNS
- Email: Cloudflare Email Routing
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 129,739, 3 hosts
- Verified with: Google, OpenAI
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Priority Hints Sep 2026