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PHP is a scripting language for creating websites.

JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.

Cloudflare Server is a web server developed by Cloudflare.

Iron Hosting Centre (IHC) is a Russian web hosting provider.

EuroByte is a Russian web hosting provider.

Cloudflare provides a content delivery network.

Iron Hosting Centre (IHC) is a Russian web hosting provider.

Cloudflare provides DNS servers and other web services.

Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.

GlobalSign is an IT security service provider, also operating as SSL certificate authority.

Yandex.Metrica is a free web analytics system combining customizable reporting tools with behavioral analytics.

Top.Mail.Ru is a Russian web access counter service.

LiveInternet is a Russian web access counter service.

Rambler is a Russian web portal offering a web counter service.

Facebook Social Plugins provide a way for Facebook users to share web pages with their friends.

The VKontakte (or VK) share button lets website visitors share content on the Russian social network.

External Cascading Style Sheets define style rules in a separate CSS file.

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Gzip (GNU zip) is a file compression algorithm.

Zstandard is a lossless data compression algorithm developed by Yann Collet at Facebook.

The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.

HTTP/2 is the second major version of the HTTP network protocol.

HTTP/3 is the third major version of the HTTP network protocol, derived from the QUIC protocol.

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Transitional version of HTML.

Windows-1251 is an 8-bit character encoding, designed to cover languages that use the Cyrillic alphabet.

PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.

Russian Federation