What powers johnprimerblues.com?
Last seen Aug 2026 · 19 technologies across 13 categories
Analytics
Google Analytics
since Sep 2022
Caching
Varnish
since Jun 2024
Sendgrid
since Mar 2024
JavaScript frameworks
Stimulus
since Sep 2022
JavaScript libraries
jQuery Migrate
since Sep 2022
SoundManager
since Sep 2022
Miscellaneous
Open Graph
since Sep 2022
Mobile frameworks
jQuery-pjax
since Sep 2022
Performance
Turbo
since Sep 2022
Programming languages
Ruby
since Sep 2022
Security
Video players
YouTube
since Sep 2024
Web frameworks
Ruby on Rails
since Sep 2022
Web servers
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.99 / 10 · ranked #1,607,787 of all domains
59 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| CLS | 0.05 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 2.1 MB · 77 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| www.johnprimerblues.com | 19 |
| johnprimerblues.com | 18 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Isotope Jul 2026
- dropped Cart Functionality Apr 2026