Lazy load scroll margin

[tcaptan-cr]

Request for Mozilla Position on an Emerging Web Specification

• Specification title: Lazy load scroll margin
• Specification or proposal URL (if available): https://html.spec.whatwg.org/#lazy-load-root-margin
• Explainer URL (if available): https://gist.github.com/tcaptan-cr/bf0ac25f77cb6b6c58c916e6577d91c3
• Proposal author(s) (@-mention GitHub accounts): tcaptan-cr
• Caniuse.com URL (optional):
• Bugzilla URL (optional): https://bugzilla.mozilla.org/show_bug.cgi?id=1864794
• Mozillians who can provide input (optional): zcorpan

Other information

[zcorpan]

I filed the spec issue to request scrollMargin in IntersectionObserver precisely to solve the issue of lazy-loaded images in scrollable containers being loaded too late. I've reviewed the relevant spec changes. Suggested position: positive.

cc @emilio

[emilio]

Agreed.

[zcorpan]

No dashboard entry as it's an improvement to lazy-loading.