With the growth and wide use of web-based applications in many domains, it is crucial to check their conformance with regards to their requirements. Among the important set of testing types, compatibility testing is of high importance. Indeed, ubiquity is required and the way of interacting with these applications can be performed in many manners. Compatibility testing aims at determining if the web application is proficient enough to run in different browsers, database, hardware, operating system, mobile devices, networks, etc. In this context, one challenge for compatibility testing is how to execute multiple tests cases, in a correct and efficient way, that may cover several environments and functionalities of the tested applications, while reducing the consumed resources and time. In our work, we propose a methodology to efficiently perform compatibility tests through several environments with different versions of operating systems (OS) and browsers. We emphasize on resource consumption improvement by using parallel testing and containerization.