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Riddhi Sharma109 Points
question on images
why alt is used when already a link is provided for an image?
Andrew YoungCourses Plus Student 639 Points
Alt is the text when your visitor's browser/server can't serve image successfully
Here is some details for
src the location of your image
alt the text that will show when image can't be server or show to the crawling bot (eg. google search console bot)
Brice Roberts22,415 Points
An "alt" tag provides the text caption when you scroll over the image, or gives the user some idea of what the image is going to be, if they disable image loading by default or on metered(slow) internet connections that will no quickly load. It allows the user to understand what the image is if they cannot see it.
But, the most important reason is for Accessibility. For blind users, it gives screen reading software the capability of describing the image to the user. For this reason, you should also use as much detail as you can fit in a sentence.