Alt tags is the alternative text used for describing images. Alt tags are displayed on the site while the emages are loading, or when you hover over the image with your mouse. They also help blind people who are using text readers to read your page.

Alt tags are another place where you should insert your keywords to improve your rankings in SERPs. Even if your text already have keywords you could still improve and reinforce your most important keywords.

Again some people claim that Alt Tags are useless, the other think they help improve rankings. Some designers abuse alt tags and just fill them with all kind of keywords. Again that is alerting search engines. But still alt tags are required if you want your site to validate with W3C standards.

So I recommend to use keywords in Alt Tags, but don’t over do it.

And even if Alt Tags don’t have any value for search engines ( I am sure that is not the case), they still help visually impaired people browse your site.

An example code of Alt Tag is:

Alt=”Hummer H3”

The whole image code looks like this:

<img width=”500”

height=”360”

src=”hummerh3.jpg”

alt=”Hummer H3 for sale”>