HTML Link & Heading Extractor
About CSS Keyframe Previewer
The CSS `@keyframes` Animation Studio & Timeline Previewer allows developers to construct, scrub, pause, and preview multi-step CSS keyframe animations (`0%`, `50%`, `100%`), exporting clean CSS code with iteration counts and fill modes.
How to Use CSS Keyframe Previewer
Step 1
Select a keyframe preset (Pulse, Shake, Spin, Bounce) or create custom stops.
Step 2
Add CSS properties at each percentage step (`transform`, `opacity`, `filter`).
Step 3
Use the timeline controls to play, pause, or scrub through the animation.
Step 4
Click "Copy @keyframes CSS".
Practical Use Cases for CSS Keyframe Previewer
Designing Complex Multi-Stage CSS Animations
Build pulsing spinners, skeleton loaders, floating hero illustrations, and notification bell shake animations with an interactive visual timeline.
Scrubbing and Debugging CSS Animations Frame-by-Frame
Pause and scrub keyframe progress percentage (`0%` to `100%`) using a slider to inspect element transforms and opacity at precise intervals.
Input & Output Examples
Generating Pulse Scale Keyframes
Animation: `pulse 1.5s infinite ease-in-out`
`@keyframes pulse {\n 0%, 100% { transform: scale(1); opacity: 1; }\n 50% { transform: scale(1.1); opacity: 0.8; }\n}`Key Features & Performance
- ✓Interactive keyframe track: add keyframe percentage stops (`0%`, `25%`, `50%`, `75%`, `100%`).
- ✓Configurable: `animation-duration`, `animation-iteration-count`, `animation-direction`, `animation-fill-mode`.
- ✓Scrubbable timeline slider with Play, Pause, and Reverse playback controls.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy `@keyframes` CSS.
Key Terminology & Definitions
`@keyframes` At-Rule
A CSS at-rule that controls the intermediate steps in a CSS animation sequence by defining styles for key points along the animation sequence.
`animation-fill-mode: forwards`
A property ensuring that the target element retains the computed style values set by the last executed keyframe when the animation ends.