Alt tags are alternative tags that appear in the place of pictures or images when browser preferences are set as text only, which means browser doesn't show the images. Alt tags are very important factor which should be never overlooked.
There are two benefits of adding an alt tag to the image
1) Search engines understand what the image is about because crawlers or spiders are blind and they don’t understand the images. For them everything is text. So in order to tell the spiders what the image is about, it is always necessary to add an alt tag to the image
2) The visually impaired people can understand the image using text reading software like screen reader.
1) Search engines understand what the image is about because crawlers or spiders are blind and they don’t understand the images. For them everything is text. So in order to tell the spiders what the image is about, it is always necessary to add an alt tag to the image
2) The visually impaired people can understand the image using text reading software like screen reader.
Though the use of text browsers has come down to negligible levels with the wide spread penetration of broadband, the visually impaired people still use the software like screen reader and need a complete description of the images which is only possible with the alt tag.
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