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Every day, creators pour hours into videos that never trend — not because the content was bad, but because they published on the wrong day, used too few tags, or picked a saturated category. We wanted to know: Is virality actually predictable? The 2026 YouTube trending dataset across 11 countries gave us a chance to find out.
TrendLens is a virality intelligence dashboard for YouTube creators. It reveals what separates trending videos from ones that disappear — by category, country, and timing. The centrepiece is a pre-upload scoring tool: input your video's parameters and get a virality potential score with specific, actionable recommendations before you hit publish.
We analysed the 2026 YouTube Trending Videos dataset (11 countries, multiple trending cycles) to extract feature importance, engagement benchmarks, and timing patterns. The frontend is a fully interactive single-page dashboard built in HTML/CSS/JS, with four views: Overview, Virality Signals, Timing & Tags, and the Score My Video predictor.
Engagement rate and view count tell very different stories — high engagement doesn't equal high reach, and reconciling those two signals without misleading creators took several iterations. Normalising data across countries with very different trending thresholds (India vs. Germany, for example) was also non-trivial.
The pre-upload scorer is something no mainstream creator tool offers. Distilling the dataset down to three factors that explain ~65% of trending variance — engagement rate, publish timing, and tag count — and making that instantly actionable for a non-technical user felt like a genuine product win.
Virality has more structure than it appears. Friday–Saturday uploads trend 28% faster. Titles between 40 and 65 characters consistently outperform. Comments-enabled videos trend 2.1x more often. These aren't hunches — they're patterns that repeat across countries and categories.
Direct YouTube Studio API integration so creators can score real drafts. Channel-level benchmarking against top trending creators in the same category. And real-time trending cycle alerts — so creators know exactly when their niche is spiking and can move fast.
