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epitometool

CSS animation generator

CSS & UI generators

Generate keyframes and animation shorthand with live motion preview and timing controls.

Updated

Animation controls

Preview

CSS output

@keyframes epitomePulse {
  from { transform: rotate(-8deg) scale(0.94); opacity: 0.6; }
  to { transform: rotate(8deg) scale(1); opacity: 1; }
}

.target {
  animation: epitomePulse 1200ms ease-in-out 0ms infinite alternate both;
}

Quick start

How to generate CSS keyframes

Create a reusable keyframes block and animation shorthand.

  1. Step 1
    Tune motion

    Set duration, delay, easing, rotation and scale values.

  2. Step 2
    Preview animation

    Verify the visual feel on the animated square.

  3. Step 3
    Copy CSS

    Use the generated keyframes + animation declarations directly.

In-depth guide

CSS animation generator

Create reusable keyframes and animation shorthand without manually tuning each value.

Animation shorthand order

animation commonly combines name, duration, timing-function, delay, iteration-count, direction and fill-mode.

Performance guidance

Prefer animating transform and opacity. Avoid layout-triggering properties like width/left where possible.

How to use it

  1. Adjust duration, timing function, delay and iteration count with the live controls.
  2. Edit the keyframe stops to describe the start, middle and end states.
  3. Preview the motion, then copy the generated @keyframes block and animation shorthand into your stylesheet.

The timing function shapes the feel: ease-out for entrances, ease-in for exits, linear for loops like spinners.

Pitfalls and privacy

Long or infinite animations can distract users and drain battery on mobile — keep durations short and respect prefers-reduced-motion for accessibility. Animating width, height, top or left forces layout recalculation every frame and causes jank; animate transform and opacity instead. The generated CSS is plain text produced entirely in your browser — nothing is uploaded.

When to use it vs alternatives

Use this tool for quick browser-based work when you need an answer or output immediately. Use a dedicated application or automated workflow when you need bulk processing, approvals, or repeatable production rules.

Frequently asked questions

Can I use this output in production?

Yes. The output is standard CSS keyframes plus a valid animation shorthand.

Does this support custom cubic-bezier?

This first release includes common easing presets. A bezier graph editor is planned for a later sprint.

Will the animation run smoothly on mobile?

Yes. Transform and opacity are GPU-friendly animation properties on modern browsers.

How do I make the animation loop forever?

Set iteration-count to infinite. Combine it with a linear timing function for steady loops like spinners or marquees.

What is the difference between ease-in and ease-out?

ease-out starts fast and settles gently, which suits elements entering the screen. ease-in starts slow and accelerates, which suits elements leaving.

Should I respect reduced-motion preferences?

Yes. Wrap non-essential animation in a prefers-reduced-motion media query so users who opt out of motion get a static experience.

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