The Webometrics University Ranking is a ranking system based on university web presence, visibility and web access. This ranking system measures how strongly a university is present in the web by its own web domain, sub-pages, rich files, scholarly articles etc. The central hypothesis of this approach is that web presence is a reliable indicator of the global performance and prestige of the universities and as such, is an indirect way to measure all the university missions (teaching, research, transfer). Although the Web is universally recognized as one of the most relevant tools for scholarly communication, it is still very rare these indicators are used for the evaluation of the scientific research and the academic performance of universities. Webometric indicators are provided to show the commitment of the institutions to Web publication.