Optimizing Content with the ALT Attribute
Oftentimes the ALT attribute can help in enhancing Web site's findability. It can also emphasize important keywords and phrases. In case you did not know the ALT HTML tag is an attribute associated with the IMG tag, which itself is a tag that marks up images on Web pages.
Enhancing textual content with the ALT tag is one of the oldest tricks in the SEOs cookbook. The best candidates for optimizing HTML with the ALT tag are Web sites that have little content (text) and consist mainly of images and multimedia files. The ALT tag can help in such scenarios, but not without consideration since it might as well cause unexpected results.
One purpose of the ALT tag that is very important is that when users hover over images then the ALT tag appears as a tool tip, which can help people learn about the image and especially if it is a multimedia content.
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