devtoweb
Your scroll listener fires on every pixel. `IntersectionObserver` fires when visibility actually changes.
Signal history
7-day window (free)Not enough history yet — the trend line fills in as snapshots accrue (hourly).
Entities
intersectionobserver
Embed a live signal badge
[](https://www.signalcrest.app/topic/dev%3A4178482)
Drop this in a README or blog post — it updates automatically as the score moves.