Websites compete fiercely for the highest rank in search engines. The benefits lie in lower advertisement cost and better promotion effect of the websites for business activities. Therefore, every company expects their website to appear in the top 10 or on the first page of search engines, making web developers highly competitive to get into the highest rank on search engines. In this paper, we explore and evaluate the ability of the PROMETHEE method to index and rank websites based on multi-criteria analysis for the first time. The results are verified with an analytical solution derived manually and validated against Google results. This method allows companies to conveniently compare their websites’ popularity with competitors’ in the search engine, so it can be a powerful tool to improve their websites’ ranking by using the feedback-loop concept to boost their marketing strategy.