Meta Description

   A meta description is a 160-character snippet, a meta tag in HTML, that summarizes a page`s content. this website is having meta description of the following : Българският тенис сайт! - Tennis.bg

Cloudflare Certificate Transparency

   The Expect-CT header allows sites to opt in to reporting and/or enforcement of Certificate Transparency requirements, which prevents the use of misissued certificates for that site from going unnoticed.

Vary Header Accept-Encoding

   The Accept-Encoding request HTTP header advertises which content encoding, usually a compression algorithm, the client is able to understand. Using content negotiation, the server selects one of the proposals, uses it and informs the client of its choice with the Content-Encoding response header.

CloudFlare

   Cloudflare, Inc. is a U.S. company that provides content delivery network services, DDoS mitigation, Internet security and distributed domain name server services. Cloudflare"s services sit between the visitor and the Cloudflare user"s hosting provider, acting as a reverse proxy for websites.

Google Hosted Libraries

   The Google Hosted Libraries is a stable, reliable, high-speed, globally available content distribution network for the most popular, open-source JavaScript libraries.

Stackpath BootstrapCDN

   BootstrapCDN is a public content delivery network. Users of BootstrapCDN can load CSS, JavaScript and images remotely, from its servers,encompasses MaxCDN and NetDNA

Facebook Pixel

   The Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising by understanding the actions people take on your website.

Font Awesome 4.5.0

   Font Awesome is a font and icon toolkit based on CSS and LESS. It was made by Dave Gandy for use with Twitter Bootstrap, and later was incorporated into the BootstrapCDN.

manifest.json

   The manifest.json file is the only file that every extension using WebExtension APIs must contain.

Cloudflare

   Cloudflare, Inc. is an American web infrastructure and website security company, providing content delivery network services, DDoS mitigation, Internet security, and distributed domain name server services

PHP 5.4.41-0+deb7u1

   PHP: Hypertext Preprocessor is a general-purpose programming language originally designed for web development.

Google Publisher Tags

   Google Publisher Tags (GPT) is an ad tagging library with which you can dynamically build ad requests. GPT takes key details from you (such as ad unit code, ad size, and key-values), builds the request, and displays the ad on web pages or mobile apps.

Progressive Web Apps For iOS

   One of the main characteristics of a Progressive Web App (PWA) is app-likeness. Although your app is technically run in the web browser, you should strive to make it look — and feel — as good as a native application.

Viewport - initial-scale

   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Viewport - Width

   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Viewport - Mobile compatible

   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Chunked transfer encoding

   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"