What powers sparkjs.dev?
Last seen Jun 2026 · 8 technologies across 8 categories
Caching
Varnish
since Jul 2025
CDN
Fastly
since Jul 2025
Documentation
Font scripts
Google Font API
since Jul 2025
Miscellaneous
Open Graph
since Jul 2025
PaaS
GitHub Pages
since Jul 2025
Programming languages
Python
since Jul 2025
Security
HSTS
since Jul 2025
Audience
- 91% desktop
- 9% phone
United States
Japan
Singapore
China
India
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.34 / 10 · ranked #1,075,985 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 2.3 MB · 19 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.