In HTML, the alt attribute specifies an alternate text for an image, if the image cannot, or is not displayed. Originally implemented as a way to describe an image to visitors on slower connections or to make a page more accessible to visitors who use a screen reader on their computers, they also have some benefit from a search engine optimization perspective.
The portion of a web page that users can see immediately upon visiting, with no scrolling required.
Testing two or more versions of a piece of content to determine which performs better. Examples could include two versions of a landing page with different color schemes or images to see if one has a higher conversion rate than the other.
301 “Moved Permanently” — Requested URL has permanently been relocated to another URL. Frequently used to deliver visitors and search engines to the proper page after a site redesign.
200 Result: “OK” — Indicates that the client’s request was successfully received, understood, and accepted.
404 Error: “Page Not Found” A frequently encountered error page served to a visitor when the requested page can not be located on the server.
Widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
A popular database back end for web-development. Allows websites to store data in an easily manageable and efficient manner. Now that it is owned by Oracle, there is a general trend within the open source community to migrate towards MariaDB as a successor.
Open source code library for the dynamic creation and manipulation of images. “Wrappers” are available for Perl, PHP and other languages. GD creates PNG, JPEG and GIF images, among other formats.
File Transfer Protocol: Used on the Internet for exchanging filesm, most commonly used to download a file from a server (host) using the Internet or to upload files to a host. Generally replaced these days with SFTP, which allows a more secure file transfer experience.