What powers keio.edu?
Last seen Aug 2026 · 30 technologies across 17 categories
Analytics
Cloudflare Browser Insights
since Jun 2021
Google Analytics
since Aug 2018
CDN
cdnjs
since Nov 2021
Cloudflare
since May 2020
Databases
Editors
Font scripts
Google Font API
since Sep 2020
JavaScript frameworks
Backbone.js
since May 2022
Stimulus
since Mar 2026
JavaScript libraries
Htmx
since Nov 2025
libphonenumber
since Jun 2025
Lightbox
since Jul 2023
Preact
since Apr 2023
Selectize
since Nov 2022
Underscore.js
since May 2022
Miscellaneous
HTTP/3
since Sep 2022
Open Graph
since Sep 2022
Operating systems
Windows Server
since May 2020
Programming languages
Java
since Aug 2021
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Sep 2020
Translation
Weglot
since Apr 2023
Video players
VideoJS
since May 2026
Web frameworks
Microsoft ASP.NET
since May 2020
Web servers
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
- 100% desktop
United States
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.24 / 10 · ranked #1,210,327 of all domains
41 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 4.8 MB · 83 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| www.keio.edu | 27 |
| secure.keio.edu | 4 |
Full technology history →
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