SPF

   The Sender Policy Framework (SPF) is an email-authentication technique which is used to prevent spammers from sending messages on behalf of your domain. With SPF an organisation can publish authorized mail servers.

PHP 5.6.38-0+deb8u1

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

English - Language

   this website is using English as a language parameter

Google Analytics

   Google Analytics is a web analytics service offered by Google that tracks and reports website traffic, currently as a platform inside the Google Marketing Platform brand.

Nginx

   Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and first publicly released in 2004. A company of the same name was founded in 2011 to provide support and Nginx plus paid software.

Meta keywords

   Meta keywords are types of meta tags in the HTML source code of a webpage. They describe the content of a website shortly and concisely,this website is using the following keywords: OpenSpeedTest, Html5 Speed Test, speed, test, speedtest, speed test, bandwidth speed test, internet speed test, broadband speed test, speed test no flash, html speed test

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 : The best HTML5 Internet Speed Test. No Flash or Java needed ✅The Most Accurate Online Broadband Speed Test. Work on Any Web Browser. No Plugins needed.

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.

Character Encoding :UTF-8

   This website is using UTF-8 character encoding in HTML , character encoding is used to represent a repertoire of characters by some kind of encoding system.

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"

manifest.json

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

Google Adsense

   Google AdSense is a program run by Google through which website publishers in the Google Network of content sites serve text, images, video, or interactive media advertisements that are targeted to the site content and audience

FeedBurner

   FeedBurner is a web feed management provider launched in 2004. It provides custom RSS feeds and management tools for bloggers, podcasters, and other web-based content publishers. Google acquired FeedBurner in 2007.