There are a few rules to adhere to when creating and publishing images on the web. Speed , format, and colors. Speed is a function of the size of the image. There is no need to have an image for the web any more detailed than 72-100 ppi(pixels per inch). There is a tool in most photo editing software to save the image for the web. This is one of the best features for optimizing an image. The formats that are compatible with all browsers are JPEG, GIF, and PNG. Images that have vivid contrast and large areas of a single color are better in GIF, and images like photographs that use continuous tones are more suited to JPEG. Most monitors today conform to true color which can display 16 million colors. 16 million colors gives the developer an ability to use any type of photography.Strict xhtml will require text alt tags for photos. It's always a good idea to include keywords in the alt tag to increase searchability.
Images
There are a few rules to adhere to when creating and publishing images on the web. Speed , format, and colors. Speed is a function of the size of the image. There is no need to have an image for the web any more detailed than 72-100 ppi(pixels per inch). There is a tool in most photo editing software to save the image for the web. This is one of the best features for optimizing an image. The formats that are compatible with all browsers are JPEG, GIF, and PNG. Images that have vivid contrast and large areas of a single color are better in GIF, and images like photographs that use continuous tones are more suited to JPEG. Most monitors today conform to true color which can display 16 million colors. 16 million colors gives the developer an ability to use any type of photography.Strict xhtml will require text alt tags for photos. It's always a good idea to include keywords in the alt tag to increase searchability.
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