What powers soundtheory.com?
Last seen Sep 2026 · 15 technologies across 10 categories
Analytics
Matomo Analytics
since Aug 2020
CDN
Ecommerce
Cart Functionality
since Aug 2020
JavaScript frameworks
React
since Jan 2019
JavaScript libraries
Miscellaneous
Programming languages
Ruby
since Jan 2019
Security
HSTS
since Sep 2022
Web frameworks
Ruby on Rails
since Jan 2019
Web servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 53% phone
- 47% desktop
India
Germany
Brazil
United Kingdom
France
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.32 / 10 · ranked #1,100,999 of all domains
61 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.2 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 6.0 MB · 27 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Gandi (217.70.189.131)
- Email: soundtheory.com
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Nov 2026
- Common Crawl link graph: rank 2,087,380, 2 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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