flackr/scroll-timeline

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1163 stars · 112 forks observed · 2026-08-28

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

A JavaScript polyfill implementing the ScrollTimeline and ViewTimeline APIs from the CSS scroll-driven animations spec. It lets developers create scroll-linked animations in browsers that lack native support, via both the Web Animations API and CSS animation-timeline properties.

Use cases

• add parallax scrolling effects to a website
• animate elements as the user scrolls down the page
• use scroll-timeline CSS animations in browsers without native support
• create scroll-driven progress bars or reveal animations
• polyfill view-timeline for cross-browser scroll animations

When to choose

• you need scroll-driven animations working in browsers without native ScrollTimeline support
• you want to write scroll animations using standard spec syntax today
• you need both JS API and CSS animation-timeline polyfilling

When to avoid

• your target browsers natively support scroll-driven animations
• you need non-scroll-based animation timelines
• your CSS is loaded cross-origin, which the polyfill cannot process

Facets

library · maturity active

animation ui-components web-development frontend browser polyfill scroll-driven-animations scroll-timeline view-timeline web-animations-api css web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="flackr/scroll-timeline")