The JPG image format was designed to efficiently store and compress realistic images and artwork (both in color and greyscale). Each of these file formats are designed with a specific purpose in mind, so it is important to understand the differences when we use them in our websites. There are three file formats for graphics used on the web: JPG, GIF, and PNG. This is especially important when using background images. Make sure there is sufficient contrast when using text in graphics so they are legible.Make graphics accessible with alternate text.This diminishes search engine indexing, accessibility, etc. Graphics should never be used for text content, except if a header necessitates including a logo.Avoid annoying images, animations, gratuitous effects - they get old fast without purpose.Graphics should help focus visitor’s attention on what’s important on the page.Large (file size) graphics add load time to a page - avoid.Web graphics should fit in with the purpose, organization and style of the site. ![]() Our sites are usually quite boring without the use of graphics. ![]() Create Visual Structure - clarify information hierarchy (think typography and hierarchy here).Visual/Aesthetic Appeal - maintains visitor interest and attention.Back to Class Five page » Web Graphic Formats Purpose
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