Build CSS @keyframes animations visually. Cubic-bezier and spring easing curves, modern scroll-driven animations (scroll-timeline, view-timeline), live preview, and Tailwind v4 export.
Presets:
Preview
CSS
How to Use CSS Animation Keyframes Builder in 3 Steps
Configure. Pick a preset (fade-in, slide-up, bounce, pulse, shake, rotate) or start from scratch. Each keyframe lets you set transform, opacity, and any CSS property.
Process. Configure timing: duration, delay, iteration count, direction, fill-mode. Choose easing: built-in (ease, ease-in-out), cubic-bezier curve editor, or spring approximation.
Export. Toggle scroll-timeline or view-timeline for 2024 scroll-driven mode — animation progress tracks scroll position instead of time.
Why CSS Animation Keyframes Builder on Pixlane
CSS animations are the performant, declarative way to animate UI. Pixlane's builder ships a visual keyframe editor, presets for common animations (fade, slide, bounce, pulse, shake), and supports 2024's scroll-driven animations — `scroll-timeline` and `view-timeline` — so scroll-linked animations run without JavaScript. Live preview shows timing and easing in real time.
Scroll-Driven Animations — CSS 2024 `scroll-timeline` and `view-timeline` — scroll-linked animations with zero JavaScript. Progress-bar headers, reveal effects, parallax — all declarative.
Cubic-Bezier + Spring — Visual cubic-bezier editor for precise easing curves. Physics-based spring approximation (stiffness + damping) for bouncy feels.
Live Preview — See the animation loop in real time. Adjust timing and see immediate feedback. `prefers-reduced-motion` toggle to test accessibility paths.
Tailwind v4 Compatible — Export as Tailwind v4 `@theme animate` config, raw CSS, or SCSS mixin. Matches the modern zero-config Tailwind workflow.
Frequently Asked Questions
What is scroll-timeline?
CSS Animations Level 2 feature (shipping in Chrome, Edge; Safari in progress) that lets animations advance based on scroll position instead of time. `animation-timeline: scroll()` links an animation to the page scroll progress, enabling scroll-linked effects without JavaScript.
When should I use spring vs cubic-bezier?
cubic-bezier is a mathematical curve — precise, repeatable, what CSS natively supports. Spring is physics-based (stiffness, damping, mass) and feels more natural for 'bouncy' UI. Pixlane approximates spring as a cubic-bezier since CSS doesn't yet natively support springs.
Does this support prefers-reduced-motion?
Yes. The output wraps animations in `@media (prefers-reduced-motion: no-preference) { ... }` so users with motion sensitivity aren't affected. Critical for WCAG 2.3.3 compliance.
Is this tool free?
Yes. CSS Keyframes Builder on Pixlane is completely free with no signup required.