Google image search is other feature of Google search engine and it operates little different to main search and therefore it is important to optimize for Google image search.

Online users looking for images uses Google image search instead of the main search and hence it is necessary to keep in mind few extra things.

The Alt tag describes about the image. Search engines do not recognize the images or flash code placed on your web page. Hence it is very important to use captions on the images to describe the image for those who can’t see them.

The file names of the images must describe what they are. Commonly many use the numbers or any code to name the images instead start naming with words that identify them.

Google bot is that spiders the web for content and includes it in the Google index. In the same way, to index images, Google uses other bot that indexes only images. The main difference between both is that the frequency with which they indexes.