The 'תוסף לומדות - יואל גבע' is a free Chrome add-on designed to assist users in learning English vocabulary while browsing the internet. It highlights words from the English learning material of Yoel Geva, specifically tailored for psychometric exam preparation. Users can see the meanings of these words along with their difficulty levels, making it a practical tool for enhancing vocabulary skills during regular online activities.

This add-on allows for customization, enabling users to disable it on specific websites through the options menu. Additionally, users have the flexibility to toggle the add-on on and off with a simple click, providing ease of use without interrupting their browsing experience. Overall, this tool offers a seamless way to integrate language learning into daily internet usage.