What is Atl Tag in SEO?

ALT labels provide a written text alternative to a picture.They are a way to "describe" a picture to those who can not see the picture. The most important operate of an ALT tag is to describe to a sightless customer what a picture is showing. Online search engine spiders also use ALT labels to figure out what a picture is or what it is comprising.
 
ALT is alternative tag. Sometimes, browsers may not be able to load photos for some reason. Even without seeing the photo, the visitor will be able to read the alternative keys typed in that empty photo. The search engine identifies what the image is about, as well as the visitor even without actually seeing the image.
 
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