What powers sijthoff.nl?
Last seen Jun 2026 · 25 technologies across 15 categories
Analytics
Google Analytics
since Mar 2026
Linkedin Insight Tag
since Mar 2026
CDN
Cloudflare
since Mar 2026
Google Hosted Libraries
since Mar 2026
CMS
WordPress
since Mar 2026
Cookie compliance
Databases
MySQL
since Mar 2026
Font scripts
Twitter Emoji (Twemoji)
since Mar 2026
JavaScript libraries
OWL Carousel
since Mar 2026
Miscellaneous
Open Graph
since Mar 2026
RSS
since Mar 2026
Programming languages
Security
Cloudflare Bot Management
since Mar 2026
reCAPTCHA
since Mar 2026
Tag managers
Google Tag Manager
since Mar 2026
UI frameworks
Web servers
Widgets
Wisepops
since Mar 2026
WordPress plugins
Audience
Netherlands
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.07 / 10 · ranked #1,474,406 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 3700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 2.5 MB · 90 requests
- WordPress theme: sijthoff · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.