Archive for the ‘Glossary’ Category

File Under: Glossary


To crop means to cut the pieces of an image that you don’t need.

Cropping differs from resizing because when you crop an image you retain the dimensions of the image. Resizing an image actually shrinks the image into smaller dimensions.

File Under: Glossary

Image Maps

Image maps are images that have several links geographically mapped onto it.

For example, an image map of a photograph of the Beatles might enable you to click on Ringo and receive a page describing his drumming abilities. Click on George, and receive a file about how Eric Clapton stole Patti Boyd. One thing to remember about image maps is that they are a purely visual form of navigation, so if your visitor isn’t loading the images, they’ll never know where to click. For this reason, you should always include text links under the images as an alternative way to navigate.

File Under: Glossary


Many image-processing programs, like Adobe Photoshop, allow you to build images in layers. These layers are created one at a time and placed on top of each other to assemble the whole image. While the file is a pile of little layered images, you can manipulate each layer individually and look at how each change will alter the completed picture.

File Under: Glossary

Release Candidate

The release candidate stage is the stage right between beta and final release, and it’s the last chance for developers to test their code against the browser before it’s push out into the world full-force. It’s also the stage at which add-on developers can update their third-party extensions without worrying about further code changes.

File Under: Glossary


You’d think that figuring out how many unique individuals visit a website in a given time period would be pretty easy, but in reality it’s not. Web site developers have few ways of determining exactly how many people use a given computer, IP address, or ISP account. In fact, beyond the data you get from registration processes and cookies, there’s very little reliable information on how many people visit a site, which makes hard numbers hard to come by.