SelecTrans is a Chrome add-on designed to facilitate quick translations of selected text using free public APIs. Users can easily translate text by highlighting it and right-clicking to select the 'translate selection' option. This streamlined process allows for efficient language conversion directly from the browser without the need for additional steps or applications.

The add-on's reliance on free public APIs means that while it is user-friendly, its functionality may be inconsistent, as these APIs can occasionally be unavailable. To address this, users can switch between different APIs through the add-on's toolbar icon. This flexibility provides a practical solution for maintaining translation capabilities, ensuring that users can continue to access translation services as needed.