Modern web applications feature a wide range of computationally expensive tasks, such as data fetching, advertisement, image processing, and others. Until recently, parallel computation has been mostly applied on the backend part of web applications and not so much on the front-end. However, to keep up with the increased backend parallelism frontend also needs to utilize this technique. As stated previously, in our research project we will investigate how the use of ''Web Workers API '' might help us achieve this goal.