What powers 21stmemory.com?
Last seen Aug 2026 · 9 technologies across 8 categories
Analytics
Google Analytics
since Aug 2026
Caching
Varnish
since Aug 2026
CDN
Cloudflare
since Aug 2026
Fastly
since Aug 2026
Miscellaneous
Open Graph
since Aug 2026
PaaS
GitHub Pages
since Aug 2026
Performance
Priority Hints
since Aug 2026
UI frameworks
Tailwind CSS
since Aug 2026
Widgets
Ko-fi
since Aug 2026
AI Crawlers
Not checked yet. Rescan the site (button above) and we fetch its robots.txt, llms.txt, and ai.txt to show which AI crawlers it blocks.
Audience
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 1.1 s |
| INP | 150 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 0.6 MB · 18 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.