What powers esf.bg?
Last seen Jun 2026 · 24 technologies across 16 categories
Accessibility
Analytics
Google Analytics
since Jan 2019
CDN
jQuery CDN
since Nov 2023
CMS
WordPress
since Jan 2019
Databases
MySQL
since Jan 2019
Font scripts
Google Font API
since Jan 2019
JavaScript libraries
Miscellaneous
Operating systems
Ubuntu
since Jan 2019
Programming languages
PHP
since Jan 2019
Security
HSTS
since Nov 2023
Tag managers
Google Tag Manager
since Mar 2019
UI frameworks
Web servers
Widgets
Slider Revolution
since Jan 2019
WordPress plugins
Audience
- 83% desktop
- 17% phone
Bulgaria
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.92 / 10 · ranked #633,146 of all domains
55 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.4 s |
| INP | 25 ms |
| CLS | 0.05 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Subdomains
| Host | Techs |
|---|---|
| old.esf.bg | 20 |
| esf.bg | 5 |
Full technology history →
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Recent changes
- dropped HCL Digital Experience May 2026
- dropped Java May 2026