Avoid long, thin images such as specialty horizontal rules. These are not effective for users who do not have image capabilities. Provide a brief textual alternative description for each image which can be used by text-only browsers and are essential to presenting the image to the visually impaired. This will speed up document formatting on many browsers. Proofreading and link verification Before releasing an HTML page to a public server, the syntax and spelling should be checked and all links verified.
Many development tools offer spelling and syntax checkers and link verifiers.