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Interactive CSS Cubic-Bézier Curve Visualizer & Keyframe Easing Studio

Design silky-smooth CSS transition curves and keyframe animations with interactive Bézier control handles. Compare custom ease curves against linear, ease-in-out, anticipation overshoot, and spring bounce dynamics with real-time UI previews.Documentation & FAQs ↓

Interactive CSS Cubic-Bézier Curve Visualizer & Keyframe Easing Studio — Interactive Console
Runs locally in your browser • Instant output
Standard & Kinetic Presets
Interactive Bézier CanvasP1(0.25, 0.1) · P2(0.25, 1)
1.00.0

Drag the Orange (P1) and Blue (P2) control anchors or use coordinate sliders below.

Fine Coordinate Calibration

P1.x (Time)0.25
P1.y (Progression)0.1
P2.x (Time)0.25
P2.y (Progression)1
1.2s
Custom Easing (cubic-bezier(0.25, 0.1, 0.25, 1))0%
🚀
Standard Linear Benchmark0%
⚖️
Pure CSS Declaration
transition: all 1.2s cubic-bezier(0.25, 0.1, 0.25, 1);
Tailwind Arbitrary Easing:
Web Animations API (WAAPI)
element.animate([
  { transform: 'translateX(0px)' },
  { transform: 'translateX(260px)' }
], {
  duration: 1200,
  easing: 'cubic-bezier(0.25, 0.1, 0.25, 1)',
  fill: 'forwards'
});

Formula: B(t) = (1-t)³P₀ + 3(1-t)²tP₁ + 3(1-t)t²P₂ + t³P₃

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Step-by-Step Instructions

4 Steps to Completion
1Phase 1

Drag the red (P1) and blue (P2) control handles on the coordinate grid to shape your acceleration and deceleration curves.

2Phase 2

Adjust animation duration (e.g. 200ms to 1200ms) and toggle motion direction (translate, scale, opacity, or rotate).

3Phase 3

Click 'Play Animation' to inspect the movement velocity curve, acceleration profile, and side-by-side motion comparisons.

4Phase 4

Copy the generated CSS cubic-bezier(x1, y1, x2, y2) function directly into your stylesheet or design system tokens.

Practical Use Cases & Real-World Scenarios

Crafting Native-Feeling Micro-Interactions
Give web buttons, dropdown menus, and sliding navigation drawers the snappy, weighted elasticity of native iOS and Android motion design.
Simulating Physics Overshoot & Snap-Back
Create playful UI elements that briefly overshoot their resting boundary (y > 1.0) before snapping smoothly back into position.
Auditing & Harmonizing Design System Animations
Standardize brand motion tokens across engineering and design teams with exact mathematical cubic-bezier coordinate pairs.
Related Editorial Guide on AnshuTechy15 Best Animation Software to Become Expert in 2026
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100% free, private in-browser utility with zero server uploads.