Image Map
Image maps are defined with the <map> tag of HTML. Clickable areas are defined with one or more <area> tags.
It is positional information about HTML and XHTML, containing details of coordinates of a unique image. In normal images, the whole image is linked to one destination, image maps are made to hyperlink parts of the image to different destinations. Image maps offer an easy method to link various areas of the image without having to make separate image files for the image. All you need to create an image map is the image itself and HTML code to define the clickable areas.
These maps are used for the frontend and backend. The backend image maps help the browser send positional details to the server when the user clicks a specific part of an image. It also helps the server to define the content pixel by pixel, and what is required to respond to the user’s actions. The frontend image maps don’t require specific logic for server execution. You can create image maps using a text editor, but you must know HTML, and it can take a lot of time and effort.
There are many apps like KImageMap that help you create image maps fast and without hassles. Keep in mind, however, that they can give rise to accessibility problems, and hence you should only use them where appropriate.