Mozilla Composer:Images: Overview

• GIFs • JPGs •

You will want to put images on your web pages. However, images are much more memory-intensive than text. Thus you need to be aware of the sizes of the images you place on your pages.

Keep your images small, no larger than 450 (w) x 300(h) pixels.

Put no more than a maximum of 30 kb of graphics in any one file.

Reuse images to speed downloading.

To maintain a well-organized web site, store all of your images in a separate images folder inside the folder that contains your web pages.

Browsers can read two types of image files:

*.gif files
*.jpg files

GIFs

Gif files were developed by CompuServe. Note: gif stands for graphic interchange
format.

Gifs are platform-independent; that is, they can be viewed by a browser on any computer regardless of the operating system.

Gifs can display only 256 colors. Thus they are more suitable for clip art.

JPGs

Jpg files were developed in the early 1990s by the Joint Photographic Experts
Group (JPEG) at the International Standards Organization.

They, too, are platform-independent.

Jpg files can use the entire color spectrum. Thus they are your best choice when you want to display photographs or artwork on the web.

You can get images for your pages from a variety of sources:

You can create your own images with graphics software such as Paintshop Pro, Adobe Photoshop or Fireworks.
You can transfer images to computer files with a scanner.
You can take photographs with a digital camera.
You can have your existing photographs digitized by a film-processing service.
You can buy a CD-Rom full of clip art.
You can download images from the web.

NOTE: If you do scan or download images, be aware that if an image is under copyright you cannot legally use it without asking the permission of the owner.

Many web sites offer large collections of free clip art, bullets, buttons, horizontal rules, and tiled backgrounds that you can use on your web site. A list of such sites can be found on my Graphics Links page.

To copy an image from such a site, right click on the image. When the pop-up menu appears, choose Copy and copy the image to a location on your diskette or hard drive.

• Overview • Add an Image to a Page • Add a Background Image to a Page • Turn an Image into a Hyperlink •