YouTube Popularity Score is a browser extension designed for Chrome that evaluates the popularity of videos on YouTube. It assigns a score from 1 to 10 to recommended videos, enabling users to quickly identify trending content. This tool enhances the user experience by highlighting popular videos, making it easier to engage with quality content.

The extension operates using an algorithm that analyzes various data points, such as view counts and upload dates, to determine a video's popularity score. This score is displayed as a small badge beneath the video title. Completely free and open-source, YouTube Popularity Score requires no registration and does not collect personal data, ensuring a privacy-conscious experience for users. It supports both English and Turkish languages, broadening its accessibility.