What powers 
joelonsdale.com?
Last seen Sep 2026 · 31 technologies across 18 categories
Advertising
Twitter Ads
since Feb 2023
Analytics
Blogs
Substack
since Feb 2023
CDN
Cloudflare
since Oct 2022
Unpkg
since Sep 2022
CMS
WordPress
since Dec 2020
Databases
MySQL
since Dec 2020
Mailgun
since Jun 2024
Issue trackers
Sentry
since Feb 2023
JavaScript frameworks
JavaScript libraries
Preact
since Feb 2023
Miscellaneous
PaaS
WP Engine
since Dec 2020
Performance
Priority Hints
since Mar 2026
Programming languages
Security
Cloudflare Bot Management
since Feb 2023
HSTS
since Feb 2023
SEO
UI frameworks
Web frameworks
Express
since Feb 2023
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 *: Allowed (was Restricted)
- Aug 2026 *: Restricted (was Allowed)
AI Crawlers
No AI crawlers blocked
Audience
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.63 / 10 · ranked #800,073 of all domains
109 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 2.8 MB · 40 requests
- WordPress theme: jld2021 · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (141.193.213.10)
- DNS: Google Cloud DNS
- Email: Mailgun
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 518,471, 4 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| blog.joelonsdale.com | 19 |
| joelonsdale.com | 18 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Priority Hints Mar 2026
- detected React Feb 2026
- detected React Router Feb 2026