What powers readingfeynman.org?
Last seen Aug 2026 · 34 technologies across 17 categories
Advertising
33Across
since Jul 2021
Amazon Advertising
since Apr 2025
Google AdSense
since Jun 2025
Google Publisher Tag
since Apr 2025
GumGum
since Jul 2022
ID5
since Oct 2023
OpenX
since Jul 2021
Prebid
since Apr 2025
PubMatic
since Jul 2021
Rubicon Project
since Jul 2021
TripleLift
since Feb 2024
WordAds
since Feb 2022
Analytics
Google Analytics
since Jan 2019
Snowplow Analytics
since Jul 2023
CDN
Cloudflare
since Apr 2022
CMS
WordPress
since Jan 2019
Databases
MySQL
since Jan 2019
Font scripts
Twitter Emoji (Twemoji)
since Jan 2019
JavaScript libraries
Miscellaneous
PaaS
WordPress.com
since Nov 2021
Page builders
WordPress Block Editor
since Jul 2024
Programming languages
PHP
since Jan 2019
Security
Segmentation
Adobe Audience Manager
since Jul 2022
Tag managers
Google Tag Manager
since Dec 2023
Video players
YouTube
since Jul 2026
Web servers
Nginx
since Jan 2019
Webmail
Google Workspace
since Aug 2022
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
- 53% desktop
- 47% phone
India
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.18 / 10 · ranked #10,182,925 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 2.8 MB · 102 requests
- WordPress theme: pubindependent-publisher-2 · all themes
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped AppNexus Aug 2026
- detected core-js Jul 2026
- dropped HTTP/3 Jul 2026
- detected YouTube Jul 2026
- detected Cloudflare Jun 2026
- detected Cloudflare Bot Management Jun 2026
- detected 33Across May 2026
- detected GumGum May 2026
- dropped GumGum Apr 2026
- dropped Microsoft ASP.NET Apr 2026
- detected WordPress Block Editor Mar 2026
- dropped 33Across Jan 2026
- detected GumGum Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025