A new method and computer program for evaluating page load performance of a web browser is presented. The evaluation method comprises obtaining a first browser timestamp from the web browser when the web browser starts a page process in order to load a page from the server. Further, the method comprises obtaining at least one intermediate timestamp associated with an intermediate stage during the page load. The intermediate timestamp can be for example a second browser timestamp, a first server timestamp or a second server timestamp. After that, a third browser timestamp is obtained from the web browser when the web browser completes the page load. The obtained timestamps are used for calculating a first and second page load performance parameters relating respectively to a first and second technical aspect of the page load performance.