What powers sem-r.com?
Last seen Jun 2026 · 18 technologies across 14 categories
Advertising
Twitter Ads
since Jul 2021
Analytics
Google Analytics
since Jun 2018
Microsoft Clarity
since Apr 2021
Caching
Varnish
since Jan 2020
CDN
Amazon CloudFront
since Apr 2026
Cloudflare
since Mar 2025
CMS
Hatena Blog
since Mar 2023
Issue trackers
Sentry
since Jan 2020
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Mar 2023
PaaS
Amazon Web Services
since Aug 2022
Security
Cloudflare Bot Management
since Mar 2025
Tag managers
Google Tag Manager
since Jan 2020
Video players
YouTube
since May 2019
Web servers
Nginx
since Jan 2020
Widgets
Twitter
since Jan 2020
Audience
- 73% desktop
- 27% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.61 / 10 · ranked #385,134 of all domains
161 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 1.6 MB · 61 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Amazon CloudFront Apr 2026
- dropped Facebook Login Dec 2025
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- detected Facebook Login Oct 2025
- dropped Pocket Aug 2025