Lingo Gapfy is a free Chrome extension designed to transform YouTube videos into interactive listening exercises. By utilizing subtitles, it creates engaging gap-filling activities where users can improve their auditory recognition skills. The extension effectively hides native captions and pauses on each subtitle line, allowing learners to focus on specific words. A custom panel displays the subtitles with selected words replaced by gaps, offering a unique approach to language practice.

Users can listen to the audio, type in the missing words, and replay the line as needed until they complete all gaps. This method not only aids in comprehension but also enhances retention of vocabulary. To begin using Lingo Gapfy, simply click the fox-face extension icon in the browser toolbar and start your training.