Is this tool free to use?

Yes, this tool is completely free to use. No registration, subscription, or payment is required. All processing happens directly in your browser.

Does this tool upload data to a server?

No. All processing happens locally in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy and security. The tool works even when offline.

Does this tool work on mobile devices?

Yes, this tool is fully responsive and works on all modern browsers including Chrome, Safari, Firefox, and Edge on desktop, tablet, and mobile devices.

Is an internet connection required to use this tool?

No internet connection is required after the page loads. Since all processing happens in your browser, you can use this tool offline once the page is loaded.

Is there a file size limit?

There is no server-side file size limit since files are processed locally in your browser. The only limitation is your device's memory (RAM). For very large files, we recommend processing them in smaller chunks.

🌈 Animated Backgrounds

Free online CSS animated background generator. Create stunning animated gradient backgrounds, particle backgrounds, and wave animations. Multiple animation styles (gradient flow, floating particles, wave motion, neon glow). Live preview. One-click copy CSS code for your website, landing page, or portfolio.

Animation Style

Speed

Color 1

Color 2

Color 3 (opt)

Color 4 (opt)

Live Preview

Generated CSS Code

How to Use the Animated Backgrounds

Generate with the Animated Backgrounds in three easy steps:

Configure Your Preferences
Adjust the settings and options for your animated backgrounds. Choose parameters such as length, complexity, style, or quantity based on your needs.
Click Generate
Click the "Generate" button to create your content. The tool instantly processes your preferences and produces the result right in your browser — no waiting, no server requests.
Copy or Download the Result
Review the generated output and click "Copy" to copy it to your clipboard, or "Download" to save it as a file. You can generate as many times as you need with no limits.

FAQ

生成的动画背景代码如何在自己的网站上使用？

点击“复制CSS”按钮复制生成的CSS代码，然后粘贴到你的网页样式表中。你可以将代码放在任何元素的样式中，或者直接放在 body 上作为页面背景。确保你的页面有足够的高度来展示动画效果。

动画背景会影响网站性能吗？

本工具生成的CSS动画使用GPU加速的CSS属性（transform、opacity等），性能较好。但如果同时运行多个复杂动画或长时间运行，可能会增加 CPU/GPU 占用。建议根据目标设备的性能选择合适的动画效果。

支持自定义动画颜色吗？

是的。对于渐变动画，你可以选择2-4种颜色，生成器会自动创建平滑的渐变流动动画。对于粒子动画，可以调整粒子数量、大小、速度和颜色。所有参数都可以实时调整和预览。

动画兼容所有浏览器吗？

本工具使用标准CSS @keyframes动画和渐变属性，兼容所有现代浏览器（Chrome、Firefox、Safari、Edge）。IE浏览器不支持CSS动画。建议在生产环境中使用时添加适当的浏览器前缀或使用Autoprefixer。