any side effect of using HTML alt attribute?
 

Use the HTML alt attribute to supply an alternative description of the element. The text you use for the alt attribute is shown to a visitor when their browser doesn't display the element itself. Often it's shown in the space where an image would normally appear.So is there any side effect of using HTML alt attribute?

Thanks for your answer!

There is no side effect of using HTML alt attribute and its good for SEO purpose if we use alt tag with an images.

Often it's shown in the space where an image would normally appear.

There is no side effect for your site. On the contrary, it may help search engine to know your site better.