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Cubic Bézier Editor

Visual CSS easing curve builder

Free forever — no sign-up, nothing uploaded. Files never leave your device.

braincoder.app/use/cubic-bezier-editor

Cubic Bézier Editor

Visual CSS easing curve builder

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document.pdf

1.2 MB

report.pdf

860 KB

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Free forever

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Local processing

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About this tool

Shape CSS easing curves with draggable-style sliders, presets, a live animated preview and a rendered curve.

BrainCoder's cubic-bezier timing function editor gives you a visual, hands-on way to create custom CSS animation curves. Instead of memorizing cubic-bezier syntax or guessing at timing values, drag the control points on a curve graph to sculpt the exact easing effect you want. The tool generates the CSS code in real time, so you can preview the animation feel and copy the code in one smooth workflow.

The editor displays the standard cubic-bezier curve with two control points that you can drag freely. See how your curve affects animation timing — from ease-in and ease-out to bouncy overshoot effects and smooth deceleration. The tool also includes preset curves for common easing patterns, so you can start with a known curve and fine-tune from there.

This is an essential tool for frontend developers, UI designers, and anyone creating CSS animations or transitions. It eliminates the trial-and-error of manual cubic-bezier values and helps you create more polished, professional-feeling animations. All editing happens in your browser with no server dependency.

Key features

Everything you get with Cubic Bézier Editor — no premium upsell.

Drag control points on an interactive curve graph

Real-time preview of the animation timing effect

Common preset curves (ease-in, ease-out, bounce, etc.)

Generates valid CSS cubic-bezier() function code

Copy generated code with one click

Works entirely in your browser — no installations needed

How to use Cubic Bézier Editor

Follow the steps below to use the tool.

  1. 1

    Open the Editor

    Navigate to the cubic-bezier editor. You'll see a graph with a default linear curve and two draggable control points.

  2. 2

    Drag the Control Points

    Click and drag each control point to shape the easing curve. The preview animation updates in real time to show how your curve affects timing.

  3. 3

    Copy the CSS Code

    Once you've found the perfect curve, click 'Copy' to grab the cubic-bezier() CSS value. Paste it into your transition or animation property.

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Frequently asked questions

Quick answers before you launch the tool.