What powers englishka.cz?
Last seen Jun 2026 · 42 technologies across 20 categories
Analytics
Google Analytics
since Dec 2020
CDN
Cloudflare
since Jan 2023
jsDelivr
since May 2026
CMS
WordPress
since Dec 2020
Databases
MySQL
since Dec 2020
Documentation
Zendesk
since Oct 2024
Google Workspace
since Aug 2022
Sendgrid
since Aug 2022
Font scripts
Google Font API
since Dec 2020
Twitter Emoji (Twemoji)
since Dec 2020
Issue trackers
Sentry
since Feb 2024
JavaScript frameworks
JavaScript libraries
crypto-js
since Feb 2024
Lightbox
since Dec 2020
metisMenu
since Jul 2022
Select2
since Apr 2022
SweetAlert
since Mar 2021
Miscellaneous
Performance
Priority Hints
since Apr 2025
Programming languages
Rich text editors
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Dec 2020
UI frameworks
Web servers
Widgets
WordPress plugins
Smash Balloon Instagram Feed
since Mar 2022
Audience
- 70% phone
- 30% desktop
Czechia
Slovakia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.64 / 10 · ranked #5,367,835 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.4 s |
| INP | 125 ms |
| CLS | 0.05 |
| TTFB | 3600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 31.4 MB · 243 requests
- WordPress theme: mioweb3 · all themes
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| student.englishka.cz | 20 |
| englishka.cz | 19 |
| studovna.englishka.cz | 13 |
Full technology history →
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Recent changes
- detected jsDelivr May 2026
- detected SweetAlert2 May 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- dropped PixelYourSite Sep 2025
- detected Google Tag Manager Aug 2025