Abstract: This paper analyzes the current application of web automation test tools in software automation test, and puts forward a method of introducing image comparison technology into web automation test. Starting with the existing testing platform called applitools, this paper analyzes its function and structure, and presents the system structure of introducing image comparison technology into web automatic test. At the same time, we try to use the pillow and opencv library to compare images locally, and realize the function of applitools in the cloud. And it is combined with selenium framework to realize localization of image automatic testing. Finally, the possible development of image automatic test is proposed.

Key words: image comparison, software test, automation test, web application test