There are many different graphics formats used on the internet. Sometimes different tools that nominally use the same format do not create images that are compatible - hence my title Graphics Wars. This page explores different image formats. There's also a section on safe colors and a list of links for more information and free graphics to use on your website. Do not copy images without permission.
JPEG (Joint Photographic Experts Group) files are one example of multiple formats for the same file extension. The ICO committee could not agree on the format standard. C-cube Microsystems used the JFIF (JPEG File Interchange Format) standard for jpg and jpeg files. Later SPIFF (Still Pictures Image File Format) added enhancements and used the Jpeg and spf file extensions.
There are hundreds of different graphic file formats. The table below describes a few.
Table of Image Formats
Colors displayed on a computer for text and graphics are expressed in terms of red, green and blue (RGB). The RBG number may be expressed in hex or decimal. Old monitors and browsers support only 256 different colors. To be sure that everyone sees the same colors on your webpages, use only colors from the 'browser safe' palette. This are colors with hex values of 00, 33, 66, 99, CC or FF for each of the RGB values. In decimal these values are 00, 51, 102, 153, 204, 255. (e.g. hex: 00 33 66, decimal: 00 51 102) If you use a color that is not in this palette and the user's browser only supports this palette, it will display the closest color in the browser safe palette. See the Color Cube for an interactive display of the 216 browser safe colors. HTML Goodies: Hex and Word Color Codes is a helpful chart of color names and codes but it includes named colors that are not in the safe palette.
Create It~101 - Free graphics and Html tutorial
Dave's Emporium - Free Graphics to Download
GIMP - GIMP is a very powerful free graphic tool for creating and editing graphics. It's very complex and challenging to learn, but stick with it and you'll be amazed at what you can create! There's lots of documentation available but not much for the beginner. Cooltext.com has great online tools that use GIMP but make it real easy to create logos, buttons and bullets. GIMP was originally written in UNIX but is also available for Windows, although most of the documentation assumes UNIX.
GraphicCat's Lair - Some great free graphic sets are available here and Pat will create custom graphics for a fee. The hydrangea wallpaper, buttons and bar that I use were created by her.
The Graphic Station - Free graphics and true type fonts
myImager - A free online image editor. This is a very powerful tool that can change the size, color, rotation, format and compression of your images without any other graphic tools. Other features are also available.
PhotoPlus 5 - Free image creation and editing software. Versions 6 and 7 of PhotoPlus and other graphics products are available for purchase. Tutorials are also available on the site.<
Rosh Web - Free graphics and java scripts
WizHat - Free graphics, quick Html reference, glossary and more