What powers crclass.org?
Last seen Jun 2026 · 22 technologies across 14 categories
CDN
jsDelivr
since Feb 2023
CMS
WordPress
since Feb 2023
Databases
MySQL
since Feb 2023
Font scripts
Google Font API
since Sep 2024
Twitter Emoji (Twemoji)
since Feb 2023
JavaScript libraries
Marked
since Feb 2025
OWL Carousel
since Feb 2023
Miscellaneous
RSS
since Feb 2023
Page builders
WordPress Block Editor
since Jul 2024
Performance
Priority Hints
since Aug 2023
Programming languages
PHP
since Feb 2023
Security
HSTS
since Sep 2022
UI frameworks
Animate.css
since Feb 2023
Video players
Vimeo
since Feb 2023
Web servers
Apache HTTP Server
since Jan 2019
WordPress themes
Audience
- 87% desktop
- 13% phone
Taiwan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.39 / 10 · ranked #2,695,027 of all domains
15 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 25 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Chinese (Taiwan)
- Weight: 4.3 MB · 70 requests
- WordPress theme: generatepress · all themes
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected core-js Jun 2026
- detected jQuery UI Jun 2026
- dropped jQuery UI Apr 2026
- dropped Popup Maker Apr 2026
- detected Twitter Emoji (Twemoji) Mar 2026
- detected jQuery UI Feb 2026
- detected Popup Maker Feb 2026