CSS Easing and Animation Visualizer

Visualize a CSS cubic-bezier easing curve, preview it live on position/opacity/scale, pick presets, and export copy-ready CSS

Tune CSS animation timing: enter a cubic-bezier or pick a preset, see the easing curve (progress vs time) with control points, watch live previews on translateX/opacity/scale, and copy ready-to-use transition and keyframes CSS. The Bézier solver maps time→progress exactly like browsers.

Example Results

1 examples

Tune a snappy ease-out-back curve for a button pop

See the overshooting ease-out-back curve, preview the bounce on position/opacity/scale, and copy the CSS.

Easing curve + live preview + copy-ready CSS.
View input parameters
{ "easing": "cubic-bezier(0.34, 1.56, 0.64, 1)", "preset": "ease-out-back", "duration": 600, "delay": 0 }

Key Facts

Category
Design & Color
Input Types
text, select, number
Output Type
html
Sample Coverage
4
API Ready
Yes

Overview

The CSS Easing and Animation Visualizer lets you design, test, and export custom cubic-bezier timing functions and presets. By plotting the easing curve alongside live previews of translation, opacity, and scale, you can fine-tune animation durations and delays before copying production-ready CSS transition or keyframe code.

When to Use

  • •When designing custom UI transitions that require precise timing curves beyond standard browser defaults.
  • •When debugging bouncy or overshooting animations to ensure they do not cause unexpected layout shifts.
  • •When generating copy-ready CSS transition or keyframe code for web animations.

How It Works

  • •Input a custom cubic-bezier coordinate or select one of the built-in presets like ease-in-out, snappy, or ease-out-back.
  • •Adjust the animation duration and delay parameters in milliseconds to control the timing of the transition.
  • •Review the generated SVG easing curve and watch the live preview animate across translateX, opacity, and scale properties.
  • •Copy the generated CSS transition or keyframe code directly into your stylesheet.

Use Cases

Creating a snappy, spring-like bounce effect for interactive buttons and modal entries.
Fine-tuning smooth, gradual fade-ins for image galleries and page transitions.
Prototyping complex UI motion paths by visualizing progress-over-time curves before writing code.

Examples

1. Designing a Snappy Button Pop Animation

UI Designer
Background
A designer wants to add a playful, bouncy scale-up effect to a primary call-to-action button when hovered.
Problem
Standard CSS ease-out feels too flat, and manually guessing cubic-bezier coordinates for a bounce is tedious.
How to Use
Select the 'ease-out-back' preset, set the duration to 600ms, and observe the scale preview to verify the bounce intensity.
Example Config
easing: cubic-bezier(0.34, 1.56, 0.64, 1), duration: 600ms
Outcome
The designer copies the generated CSS transition code, achieving a perfect spring-back button animation.

2. Creating a Smooth Fade-In for Image Cards

Frontend Developer
Background
A developer needs to animate a grid of product cards fading in sequentially without looking abrupt.
Problem
Linear transitions look robotic, while standard ease-in starts too slowly for fast-loading content.
How to Use
Input a custom cubic-bezier curve or select 'ease-out-expo', set a 100ms delay, and preview the opacity transition.
Example Config
easing: cubic-bezier(0.16, 1, 0.3, 1), duration: 800ms, delay: 100ms
Outcome
The developer exports the CSS keyframes, resulting in a sleek, hardware-accelerated fade-in effect.

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FAQ

What is a cubic-bezier curve?

It is a mathematical curve defined by four control points that determines the speed of a CSS transition over time.

How does the live preview work?

It applies your selected easing curve, duration, and delay to real-time CSS animations of position (translateX), opacity, and scale.

What are overshooting curves?

These are curves where values go below 0 or above 1, creating a bounce effect that may cause layout shifts.

Can I copy keyframe animations?

Yes, the tool generates both standard CSS transition properties and keyframe-compatible CSS code.

How accurate is the curve solver?

It uses a Newton-Raphson solver with bisection fallback to map time to progress exactly as modern web browsers do.

API Documentation

Request Endpoint

POST /en/api/tools/css-easing-visualizer

Request Parameters

Parameter Name Type Required Description
easing text No -
preset select No -
duration number No -
delay number No -

Response Format

{
  "result": "
Processed HTML content
",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
HTML: HTML

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-css-easing-visualizer": {
      "name": "css-easing-visualizer",
      "description": "Visualize a CSS cubic-bezier easing curve, preview it live on position/opacity/scale, pick presets, and export copy-ready CSS",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=css-easing-visualizer",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]