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Chart.js's built-in decimation plugin renders 100k+ point line charts interactively using min-max or LTTB sampling — but only if the axis type, data format, and sorting preconditions are met.
Step‑by‑step guide to create a Chart.js 4.x line chart that animates point radius, resizes responsively, and captures click events, plus a verification checklist and common pitfalls.
When working with Chart.js line charts that animate large datasets, the library clears and redraws the entire canvas on every animation frame, which can become a performance bottleneck as the number of points grows. This behavior persists in Chart.js 3 and later, even though the animation loop uses requestAnimationFrame, and the observed impact varies with c
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