What powers alter.systems?
Last seen Aug 2026 · 13 technologies across 8 categories
CDN
Cloudflare
since Nov 2025
jsDelivr
since Nov 2025
Font scripts
Google Font API
since Nov 2025
JavaScript frameworks
Svelte
since Nov 2025
JavaScript graphics
KaTeX
since Nov 2025
Miscellaneous
Programming languages
Node.js
since Nov 2025
Security
Cloudflare Bot Management
since Nov 2025
Cloudflare Turnstile
since Nov 2025
UI frameworks
SvelteKit
since Nov 2025
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 Aug 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 61% phone
- 39% desktop
United States
United Kingdom
Canada
Finland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.45 / 10 · ranked #2,591,449 of all domains
27 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3 s |
| INP | 100 ms |
| CLS | 0.2 |
| TTFB | 2300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.0 MB · 70 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected PWA Apr 2026
- dropped Cloudflare Browser Insights Mar 2026
- dropped HTTP/3 Mar 2026
- detected Open Graph Dec 2025