A webmaster is a person responsible for maintaining one or more websites. The title may refer to web architects, web developers, site authors, website administrators, website owners, website coordinators, or website publishers. The duties of a webmaster may include: ensuring that the web servers, hardware and software are operating correctly, designing the website, generating and revising web pages, A/B testing, replying to user comments, and examining traffic through the site. Webmasters of commercial websites may also need to be familiar with e-commerce software.
Due to the RFC 822 requirement for establishing a "postmaster" email address for the single point of contact for the email administrator of a domain, the "webmaster" address and title were unofficially adopted by analogy for the website administrator. RFC 2142 turned this common practice into a standard.
Core responsibilities of the webmaster may include the regulation and management of access rights of different users of a website or content management system, the appearance and setting up website navigation. Content placement can be part of a webmaster's numerous duties, though content creation may not be.
Web development tools (often called devtools) allow web developers to test and debug their code. They are different from website builders and integrated development environments (IDEs) in that they do not assist in the direct creation of a webpage, rather they are tools used for testing the user interface of a website or web application.
Web development tools come as browser add-ons or built-in features in web browsers. Most popular web browsers, such as Google Chrome, Firefox, Internet Explorer, Safari and Opera, have built-in tools to help web developers, and many additional add-ons can be found in their respective plugin download centers.