CSS Animation Generator — Keyframes Builder
Generate CSS animations from six presets—fade, slide, bounce, spin, pulse, shake. Adjust duration, timing, and delay. Copy production-ready code.
@keyframes tg-fade-in {
0% { opacity: 0; } 100% { opacity: 1; }
}
.element {
animation: tg-fade-in 1s ease 0s infinite;
}You're on 7BusyBoss — 300+ free tools that run instantly in your browser. No signup, nothing uploaded.
Not every property is cheap to animate
Animating width, height, top, or left forces the browser to recalculate layout on every frame—expensive and janky. Animating transform or opacity is GPU-accelerated and never causes reflow. This tool's six presets use only transform (translate, rotate, scale) and opacity, the two properties you should reach for when motion needs 60 fps.
Six motion patterns built in
fade-in transitions opacity: 0 to opacity: 1. slide-in combines transform: translateX(-40px) with opacity for entrance from the left. bounce uses translateY(-30px) at the midpoint. spin rotates 360 degrees. pulse scales to 1.15. shake shifts translateX left and right. All six are ready to copy as production-ready @keyframes.
Timing and delay shape the feel
ease and ease-in-out start and end slow, making motion feel intentional. linear suits spinners and loops. ease-in accelerates (exits), ease-out decelerates (entrances). Delay up to 3 seconds stagger multiple elements—set three buttons to animate one after another by giving them delay 0, 0.1, and 0.2 seconds.
Chaining and custom keyframes require hand edits
This tool generates single keyframes. To run animations in sequence—one finishes, the next starts—wrap each animated element in a <div> and stagger their delays manually, or use CSS animation-timeline: view() on modern browsers. Custom keyframes need direct edits to the @keyframes rule. Cubic-bezier and prefers-reduced-motion are not available.
An animation is only as good as its easing curve, since linear motion reads as mechanical however well timed. Shape one with the cubic-bezier generator.
How to use the CSS Animation Generator
Takes about a minute. No signup, no download, your data stays in your browser.
- 1Open the tool. Scroll up to the CSS Animation Generator above — it loads instantly in your browser, no install needed.
- 2Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
- 3Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.
Frequently asked questions
Common questions about the CSS Animation Generator.
Why are all six presets built on transform and opacity?
These two properties don't force the browser to recalculate page layout. Animating width, height, left, or top triggers reflow on every frame—expensive and creates jank. Transform and opacity run on the GPU and stay smooth even on slower devices.
Which timing function should I use for entrance animations?
ease-out starts fast and slows down near the end, which feels like the element is arriving at rest. That's why it's standard for elements sliding or fading in. ease-in does the opposite—good for exits and dismissals.
Can I animate the same element with multiple animations at once?
The tool generates a single animation shorthand per element. To layer multiple animations on one element, edit the CSS and list them: animation: tg-fade-in 1s ease, tg-pulse 2s linear; separating each with a comma.
Do I need vendor prefixes for production use?
No. All modern browsers support unprefixed animation, @keyframes, and transform. If you need to support Internet Explorer 9, add -webkit- prefixes, but IE is no longer maintained and most projects have dropped that support.
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