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Cubic Bezier Generator
Drag the control points to shape an easing curve and copy the CSS.
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About Cubic Bezier Generator
Drag the two handles to shape the easing curve and watch it against a linear reference, which makes overshoot and a slow finish obvious. The curve is emitted as cubic-bezier().
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The x axis is progress and the y axis is displacement; the editing area deliberately extends from -0.5 to 1.5, because an overshooting curve has control points outside 0–1 (the default here is 0.34, 1.56, 0.64, 1).
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The x axis is held to 0–1: CSS requires both control-point x values inside [0,1], and anything outside invalidates the whole curve. Overshooting on y is legal, and that is where anticipation and bounce come from.
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A side-by-side demo against linear motion shows exactly where the curve speeds up and slows down; the output is a `transition-timing-function: cubic-bezier(...)` line.
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Drag a handle or pick a preset
The seven presets (linear / ease / ease-in / ease-out / ease-in-out / back-out / expo-out) are well-known point sets, and you can keep tuning after loading one.
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Compare against linear
Watch the two squares diverge — the longer the decelerating stretch, the softer the motion reads.
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Set the duration and copy
The duration only drives the demo; what you copy is the curve function itself, ready for your own transition.
CSS requires both control-point x values to lie in [0,1]; anything outside makes the curve invalid and the browser falls back to a default. The y axis may overshoot: above 1 is a bounce past the target, below 0 is a wind-up before it — that is exactly how overshoot easings are built.
No. `ease` is cubic-bezier(0.25, 0.1, 0.25, 1), `linear` is (0, 0, 1, 1) and `ease-in` is (0.42, 0, 1, 1). The presets are just names for those points — what you copy is the same function, interpolated by the browser the same way.
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