Intersection Observer Playground

Tag: Intersection Observer Playground

2+ tools

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Intersection Observer Sandbox - Online Visual Threshold

Adjust root, margin, and threshold. See a live log of intersection events as you scroll. Debug lazy loading.

API debug Intersection Observer lazy threshold

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Lazy Loading Demo - Online See Intersection Observer

Scroll down to see images load lazily. Code snippet provided. Learn how native loading='lazy' works.

Developer Tools demo Intersection Observer lazy load learn