This helps users decide whether they want to start a download. To help make your pages available to physically disabled persons, place an anchor to a page with a text transcript or description of the sound right next to the anchor for the sound. Testing Test your documents on a couple of different platforms. Each system's video settings will be set to display different from yours. Some are more tolerant of syntactic errors than others.
Some platforms run slower than others.
Check your presentation effect in various environments. Have another user test your documents. Test all links to be sure that they are valid. Use Bobby accessibility checker to test your web page to see if it meets accessibility specification levels. Additional checks can be performed using the JAWS screen reading technology which is commonly used by persons with visual disabilities.