malchata/yall.js

Health v2 · maintenance only

Flags: archived

Adoption not part of the score

1381 stars · 136 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

yall.js is a small, SEO-friendly lazy loading library for the browser that handles autoplaying <video> elements, video poster images, and CSS background images using Intersection Observer. Version 4 focuses on cases not covered by native lazy loading, and can watch the DOM via Mutation Observer for dynamically added elements in single-page applications.

Use cases

• lazy load autoplaying videos that replace animated gifs
• lazy load video poster images
• lazy load css background images
• improve page load performance and web vitals
• lazy load elements added dynamically in a single page app
• seo-friendly lazy loading for images and video

When to choose

• you need to lazy load videos or css background images that native lazy loading doesn't cover
• you want a tiny, dependency-free script with Intersection Observer support
• your SPA injects lazy-loadable elements after initial page load

When to avoid

• you only need to lazy load <img>, <picture>, or <iframe> elements - use native loading="lazy" instead
• you need a full-featured lazy loader supporting all element types as in older versions
• your target browsers lack Intersection Observer support and you can't polyfill

Facets

library · maturity active

image-processing web-framework developer-tools web-development frontend performance browser lazy-loading intersection-observer video background-images webperf seo-friendly nodejs

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