Cubic Bezier Animator Guide

What it does

The Cubic Bezier Animator lets you design custom CSS easing curves with draggable control points and watch them compared against preset easings in real time. Fine-tune motion feel for transitions and animations without guessing coordinate values or reloading the page. All curve math and animation preview runs locally in your browser — no uploads and no external libraries required.

When to use it

• Crafting custom UI transition timing that feels more natural than ease-in-out
• Matching motion design specs from After Effects or prototyping tools
• A/B testing easing feel on buttons, modals, and page transitions
• Teaching or learning how cubic-bezier control points affect acceleration
• Replacing default CSS easings with brand-specific motion tokens

How to use it

1. Drag the control points on the curve editor to shape your easing.
2. Watch the comparison animation loop against linear, ease, and other presets.
3. Read the live cubic-bezier(x1, y1, x2, y2) values as you adjust handles.
4. Fine-tune coordinates numerically if you need pixel-perfect values from a spec.
5. Copy the cubic-bezier() CSS value and paste it into your transition or animation rule.

Tips

• Y values outside 0–1 create overshoot effects — useful for playful bounces but jarring on subtle UI.
• Compare against ease-out for enter animations and ease-in for exit animations as starting points.
• The same cubic-bezier value works in CSS transitions, animations, and the Web Animations API.
• Save values in your design system as named tokens like --ease-emphasis for consistency.

FAQ