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.

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: U2, The Joshua Tree Tour, 2019eXPERIENCE + iNNOCENCE Tour 2018, #U2eiTour, The Joshua Tree Tour 2017, #U2ieTour, Songs of Innocence, Ordinary Love, The Miracle (of Joey Ramone), Every Breaking Wave, One, No Line On The Horizon, How To Dismantle An Atomic Bomb, Adam, Bono, The Edge, Edge, Larry, U2 tickets, Gigs, Tour, U2 news, u2 music, u2 video, tour dates, song archive, merchandise, fans, Achtung Baby, The Joshua Tree, With or Without You, Vertigo, New Years Day, concert tickets, live, show, band

Pragma Header - backwards compatibility with HTTP/1.0

   The Pragma HTTP/1.0 general header is an implementation-specific header that may have various effects along the request-response chain. It is used for backwards compatibility with HTTP/1.0 caches where the Cache-Control HTTP/1.1 header is not yet present.

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 official U2 website with all the latest news, video, audio, lyrics, photos, tour dates and ticket information.

Cache-Control Header Max-Age

   Specifies the maximum amount of time a resource will be considered fresh. Contrary to Expires, this directive is relative to the time of the request. this website is having max-age=84600 secs.

English - Language

   this website is using English as a language parameter

Facebook SDK

   The Facebook SDK for JavaScript provides a rich set of client-side functionality

Google Tag Manager

   Google Tag Manager is a tag management system created by Google to manage JavaScript and HTML tags used for tracking and analytics on websites (variants of e-marketing tags, sometimes referred to as tracking pixels or web beacons.

PHP

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

PHP 5.6.27

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

Apache

   The Apache HTTP Server, colloquially called Apache, is free and open-source cross-platform web server software, released under the terms of Apache License 2.0. Apache is developed and maintained by an open community of developers under the auspices of the Apache Software Foundation.

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"

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.