This research was aimed to provide an overview of digital test design that created using the Wondershare application and then imported into the Kelase platform to realize good blended learning to improve students' cognitive abilities. The approach of this research was development research, which focused on developing digital test instruments. The stages of development include: making the instrument items, validating the contents of instrument items, analyzing the instrument items, making the final items, importing the final items to Wondershare, and importing the digital tests to the Kelase platform. The research subjects that were involved in simulating content validation were two experts. Item analysis was done by determining the score of content validation and that score then compared with the validity categorization table that refers to Guilford. The validation score of the instrument contents was 0.850, so it was classified as excellent validity. The results of this research showed that 17 final items were imported into the Wondershare application and the Kelase platform, while three items were removed.