ALT tags

The alt attribute is an attribute of the img tag and is meant to be an alternative for non-visual browsers when they come across images.
This means, that the text is meant to be used when the image is not visible on the page. Instead, what is displayed (or read) is the alternative text.
 
The term "ALT tag" is a common shorthand term used to refer to the ALT attribute within in the IMG tag. Any time you use an image, be sure to include an ALT tag or ALT text within the IMG tag. Doing so will provide a clear text alternative of the image for screen reader users.
 
Alt tags are associated with an image and,when implemented properly,accurately describe the image. Images are more difficult than text for search engines to understand.As search engines crawl web content, alt tags help them comprehend the images and related webpages.
 
ALT tags provide a text alternative to an image.They are a way to "describe" an image to those who can not see the image. The most important function of an ALT tag is to explain to a blind user what an image is displaying. Search engine crawlers also use ALT tags to decipher what an image is or what it is representing.
 
A hypertext or piece which is embedded or put on the picture to depict it. At the point when the picture can't stack then the alt labels is appeared on the page.
 
Alt tag tells google about image. If you have added alt tag in image so whenever user search keyword in google which you have named your image so google will show that image in result.

And some time because of slow net problem google will not show you image so you can take ideas of image by their name. So alt tag is very useful.


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