ReadTheWords.com is a free, web based service that assists people with written material. We do this by using TTS Technology, or Text To Speech Technology. Users of our service can generate a clear sounding audio file from almost any written material. We generate a voice that reads the words out loud, that you request us to read.
In HTML authoring, there are very good reasons to include an alt attribute into every img element. The purpose is to specify a textual replacement for the image, to be displayed or otherwise used in place of the image. Thus, the prime rule is: Consider what the page looks like or sounds like when images are not shown. Then, write for each image an alt text that best works as a replacement. This document also gives more specific suggestions for simple, common situations, and some uncommon too. For content-rich images, it recommends explicit links to textual alternatives.