What powers spell.sh?
Last seen Aug 2026 · 15 technologies across 10 categories
Advertising
Carbon Ads
since Aug 2026
Analytics
Vercel Analytics
since Apr 2026
JavaScript frameworks
JavaScript graphics
Miscellaneous
Open Graph
since Apr 2026
Webpack
since Apr 2026
PaaS
Vercel
since Apr 2026
Performance
Priority Hints
since Apr 2026
Programming languages
Node.js
since Apr 2026
Security
HSTS
since Apr 2026
UI frameworks
Radix UI
since Apr 2026
Tailwind CSS
since Apr 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Aug 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
1.96 / 10 · ranked #3,698,525 of all domains
15 referring domains · OpenPageRank
Page
- CDN: Vercel
- Weight: 1.9 MB · 36 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.