CSS Scroll-Driven Animation Generator
Guide
CSS Scroll-Driven Animation Generator
Generate production-ready CSS that animates elements as the user scrolls, using the modern animation-timeline: view() et scroll() properties. Pick an animation type, target selector, timeline, axis, and range — then copy a clean stylesheet with an optional @supports fallback for older browsers.
Comment utiliser
- Pick an animation type — fade, slide, scale, rotate, or clip-path reveal.
- Choose a target selector from the preset list or type a custom one (e.g.
.card). - Select the timeline kind:
view()drives the animation off the element’s scroll progress through the viewport, whilescroll()binds it to overall page scroll. - Adjust the axis and named range (cover, contain, entry, exit) along with start and end percent sliders to tune exactly when the animation plays.
- Activer le
@supportsfallback so unsupported browsers still receive sensible initial styles, then copy the generated CSS into your stylesheet.
Caractéristiques
- Live preview pane – A scrollable demo area runs your animation in real time so you can iterate before copying.
- view() and scroll() timelines – Generate code for either an element-based or document-based scroll timeline.
- Named range plus percent – Combine names like entry, coveret exit with start and end percent sliders for fine control.
- Fallback layer pour des fonds répétables.
@supports not (animation-timeline: view())rule sets a safe initial state for older browsers. - Sortie en CSS pur – No JavaScript runtime required for the generated rules; the JS only powers the in-page builder.
FAQ
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What is the difference between scroll() and view() timelines?
scroll() ties an animation to the scroll progress of a scroll container (the document or a specific scroller), so the animation plays based on how far the user has scrolled overall. view() ties the animation to the position of an individual element as it moves through the viewport — typically used for element-reveal effects. Both are progress-based timelines, but their progress source is different.
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What do the named ranges cover, contain, entry, and exit mean?
They define where along a view() timeline the animation starts and ends. cover spans from when the element first touches the viewport to when it leaves. contain runs while the element is fully inside the viewport. entry covers the time the element is entering, and exit covers the time it is leaving. Each can be paired with a percent offset to fine-tune the start and end points.
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Do scroll-driven animations need JavaScript to run?
No. The CSS scroll-driven animations specification is implemented natively in the browser — keyframes are interpolated against the scroll position without any script. JavaScript is only needed if you want to drive timelines programmatically or animate properties that CSS cannot reach. For typical scroll reveals, pure CSS is enough.
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How do I provide a fallback for browsers that do not support animation-timeline?
Use a feature query: @supports not (animation-timeline: view()) { /* fallback styles */ }. Inside that block, set the element's initial visible state (for example opacity: 1 and no transform) so users on older browsers see the content without the animation. Alternatively, you can layer a small IntersectionObserver-based script as a polyfill.
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