# YouTube Niche Finder > Free Chrome extension and web engine that finds profitable YouTube niches: it scans hundreds of videos for a keyword, scores each one (Outlier Score = views vs the median of the channel's last 50 uploads; Viral Score 0-100; proprietary Super Score) and keeps only videos overperforming on small, recent channels. Users bring their own free YouTube API key. A weekly data report tracks rising niches. ## Core pages - [Home and live demo](https://www.youtube-niche-finder.app/en): run a real niche search in the browser - [Niche Radar](https://www.youtube-niche-finder.app/en/radar): weekly data report of rising, steady, seasonal and fading YouTube niches, computed from 12 months of YouTube search interest - [Documentation](https://www.youtube-niche-finder.app/en/documentation): Super Score, Outlier Score, analysis modes - [Free YouTube API key setup](https://www.youtube-niche-finder.app/en/api-setup) - [FAQ](https://www.youtube-niche-finder.app/en/faq) - [Blog](https://www.youtube-niche-finder.app/en/blog): honest guides on finding and working a YouTube niche - [Chrome Web Store listing](https://chromewebstore.google.com/detail/youtube-niche-finder/nofehbeocogacdnaaggcehbecjoblilh) ## Facts - Pricing: free; users provide their own YouTube Data API key (default quota: 10,000 credits/day and 100 API searches/day) - Platform: Chrome extension plus a web demo, available in English and French - Publisher: AI DIGITAL, https://aidigital.fr