Hyperlink - A hyperlink, more commonly called a link, is an electronic connection between one web page to either (1) other web pages on the same web site, or (2) web pages located on another web site. More specifically, a hyperlink is a connection between one page of a hypertext document to another.

JPEG - Abbreviation for Joint Photographic Experts Group. File format for full-color and black-and-white graphic images. JPEG images allow for more colors than GIF images and are usually smaller in size.Leading/ Line-height.

JavaScript - JavaScript is a scripting language developed by Netscape. JavaScript can make web pages more animated and dynamic in terms of graphics and navigation. One of the most common graphic JavaScript effects is called a mouseover, and Javascript navigation is commonly created using drop-down menus.

Meta-tag - Meta-tags are HTML tags that can be used to identify the creator of a web page, what HTML specifications a web page follows, the keywords and description of the page, etc. The most common use of a meta-tag in online marketing is the keyword and description tags, which tell the search engines that index meta-tags what description to use in their search query results.

PDF - Stands for Portable Document Format. Created by Adobe Systems in its software program Adobe Acrobat as a universal browser. Files can be downloaded via the web and viewed page by page, provided the user is computer has installed the necessary plug-in which can be downloaded from Adobe's own web site.
The Portable Document Format (PDF) is the file format created by Adobe Systems in 1993 for document exchange. PDF is a fixed-layout format used for representing two-dimensional documents in a manner independent of the application software, hardware, and operating system.Each PDF file encapsulates a complete description of a 2-D document that includes the text, fonts, images, and 2-D vector graphics that compose the documents.

PHP - Abbreviation for Hypertext Pre-Processor.It is a computer scripting language, originally designed for producing dynamic web pages. It is for server-side scripting, but can be used from a command line interface or in standalone graphical applications.
While PHP was originally created by Rasmus Lerdorf in 1995, the main implementation of PHP is now produced by The PHP Group and serves as the de facto standard for PHP as there is no formal specification. Released under the PHP License, the Free Software Foundation considers it to be free software.
PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. It generally runs on a web server, taking PHP code as its input and creating web pages as output. It can be deployed on most web servers and on almost every operating system and platform free of charge. PHP is installed on more than 20 million websites and 1 million servers, although the number of websites with PHP installed has declined since August 2005. It is also the most popular Apache module among computers using Apache as a web server.

Plug-In - A software extension that provides added capabilities to the browser, for purposes such as viewing, hearing, or saving specially formatted files. Most plug-ins are available via the creator's web page for downloading.

PNG - Stands for Portable Network Graphics format, and is generally pronounced "ping." PNG is used for lossless compression and displaying images on the web. The advantages of PNG is that it supports images with millions of colors and produces background transparency without jagged edges. The disadvantages are that PNG images will not show up on older browsers, and still can be comparatively larger in file size than GIFs.