AntiTestportal is a subscription-based Firefox extension designed to enhance the integrity of online assessments. It effectively blocks 'Honest respondent' technology, ensuring that users can take tests without external interference. The software also disables the document focus feature, preventing distractions during examinations. Additionally, it includes a timer limit block for each question, allowing users to focus solely on their responses without the pressure of countdowns.

The tool incorporates an experimental Google search module, enabling users to find answers to questions directly within the platform. Compatibility with Microsoft Teams enhances its usability, making it suitable for educational institutions and corporate environments. Overall, AntiTestportal offers essential features for maintaining a fair testing experience while navigating online assessments.