Voila Project Report Vol.I - Page 10

Heuristic Evaluation The evaluation was performed using the heuristic evaluation method by Jakob Nielsen. Heuristic evaluation is a usability engineering method for finding the usability problems in a user interface design so that they can be attended to as part of an iterative design process. Heuristic evaluation involves having a small set of evaluators examine the interface and judge its compliance with recognized usability principles (the "heuristics"). For this project, ten usability heuristics were used, focusing on the core functionalities of Voila: screen capture and screen cast. The goal of this evaluation was to find the usability problems in the application through the application of these ten general principles: 1. Visibility of system status 2. Match between system and the real world 3. User control and freedom 4. Consistency and standards 5. Error prevention 6. Recognition rather than recall 7. Flexibility and efficiency of use 8. Aesthetic and minimalist design 9. Help users recognize, diagnose, and recover from errors 10.Help and documentation The usability problems found out were categorized according to the principles themselves. The main problems can be broadly stated as: - Proper instructions or messages are not displayed when a tool is selected or a task is done - Labelling is incorrect and confusing - Customization is a difficult process - Redundant and confusing options for the same tasks - Use of shortkeys for certain actions which user has to remember - Tedious way to increase or decrease pixel sizes - Aesthetically not very attractive Page 9