Methods, systems, and computer-readable media for optimizing web pages using a rendering engine are presented. In some embodiments, a cloud service computing platform may receive, via a communication interface and from a user device, a request for a web page. Subsequently, the cloud service computing platform may retrieve, via the communication interface, and from a server, the web page. Further, the cloud service computing platform may render, using a headless browser, the web page to identify a plurality of content parts associated with the web page. Next, the cloud service computing platform may optimize the plurality of content parts associated with the web page. Additionally, the cloud service computing platform may transmit, via the communication interface and to the user device, the plurality of optimized content parts associated with the web page. Subsequently, the user device may render the plurality of optimized content parts associated with the web page.