The use of standardized assessment instruments brings a dimension of reliability  and validity that allows a different view on various aspects related to the assessment of learning environments, complementing and enriching the more qualitative character of other approaches. In this area, questionnaires have been developed and validated in several countries, with the aim of collecting information for the evaluation of virtual learning environments. As has already been discussed in previous work, there is no such instrument validated for the Portuguese language. This study aims to fill this gap, presenting in detail the process of translation, adaptation and validation of the Portuguese reduced version of the Web-Based Learning Environment Inventory.