CSS Animation Generator

📖 Tool Introduction

The CSS Animation Generator is a free online tool built for front-end developers and visual designers, and it turns the old chore of hand-writing @keyframes into a few strokes of a slider. You simply tune five core properties — horizontal translation, vertical translation, rotation, scale and end opacity — then choose a duration and an easing curve, and the colourful ball on the stage plays the animation with your settings immediately, while the standard CSS code you can paste straight into your project stylesheet is produced below at the same time. Whether you want a hover lift on a button, a spinning entrance for an icon, or a gentle fade transition for a page element, you can finish tuning it and copy the code within seconds. Everything runs locally in your browser, with no network request and no upload of your parameters. The interface ships in Simplified Chinese, Traditional Chinese and English, automatically follows the website theme colour, and works smoothly on a phone as well. There is no account to register and nothing to install — open it and start animating. It is a genuinely practical companion for anyone who wants to craft polished interaction motion without digging through documentation or memorising cubic-bezier values. Because the preview and the code are always in sync, you can experiment boldly, copy whatever feels right, and drop it into your production codebase with total confidence that what you saw is exactly what you get.

✨ Key Features

• Five keyframe dimensions: translate, rotate, scale and opacity each tuned independently for rich entrance and loop motion
• Live stage preview: every slider drag replays the animation on the ball with the latest values, true to what you see
• Seven easing curves: from linear and ease to an overshooting cubic-bezier, covering common motion rhythms
• Loop and direction control: infinite loop plus normal and alternate directions for seamless start and end
• Standards-based output: builds the @keyframes block with from and to rules together with the animation shorthand
• One-click example: a built-in bounce preset lets you feel a complete animation and study its code in seconds

📝 How to Use

1. Drag the left sliders to set the end translate, rotation, scale and opacity of the animation
2. Type the duration in seconds and pick a suitable easing curve from the dropdown
3. Tick infinite loop or choose normal and alternate direction, and watch the live preview on the stage
4. Click the generate button and read the assembled CSS keyframe rules in the code area
5. Click copy code and paste the result into your project stylesheet to use it

⚠️ Notes

• Duration value: duration must be a number greater than 0; invalid input falls back to the default with a hint
• Coordinate direction: translation accepts negatives — negative X moves left, negative Y moves up
• Scale baseline: scale starts from 1; set it to 0 for a fade-out or fade-in reveal effect
• Performance tip: animating only transform and opacity avoids layout reflow for the smoothest result
• Fully local: every calculation and preview happens in your browser with no network request at all