🎞️ 多张图片合成 GIF 动图Images to Animated GIF
把多张图片按顺序合成一张 GIF 动图：可调整帧顺序、每帧时长、输出尺寸、循环次数和背景色，实时预览后下载，图片只在浏览器本地处理不上传。Combine several images into one animated GIF: reorder frames, set the frame delay, output size, loop count and background colour, preview and download — all processed locally in your browser.
使用说明与常见问题How-to & FAQ
「多张图片合成 GIF 动图」是什么？What is the Images to Animated GIF tool?
把多张图片按顺序合成一张 GIF 动图：可调整帧顺序、每帧时长、输出尺寸、循环次数和背景色，实时预览后下载，图片只在浏览器本地处理不上传。Combine several images into one animated GIF: reorder frames, set the frame delay, output size, loop count and background colour, preview and download — all processed locally in your browser.
如何使用「多张图片合成 GIF 动图」？How do I use the Images to Animated GIF?
选择或拖入多张图片（JPG、PNG、WebP 等），在列表中用 ↑↓ 调整顺序或删除，设置每帧时长和输出宽度，点击「生成 GIF」即可预览并下载。尺寸不同的图片会按比例缩放并居中，空白处填充背景色。Pick or drop several images (JPG, PNG, WebP…), reorder with ↑↓ or remove frames, set the frame delay and output width, then click Create GIF to preview and download. Images of different sizes are scaled to fit and centred on the background colour.
为什么 GIF 颜色看起来有颗粒？Why do GIF colours look grainy?
GIF 每帧最多只能有 256 种颜色，照片类图片会被压缩成 256 色，渐变处可能出现色带。颜色简单的插画、截图效果最好；照片动画建议做成 MP4 或 WebP。Each GIF frame can hold at most 256 colours, so photos are reduced to 256 and gradients may band. Flat illustrations and screenshots work best; for photo animations prefer MP4 or WebP.
文件太大怎么办？The GIF is too big — what can I do?
减小输出宽度和帧数最有效：宽度减半，文件大约变为原来的四分之一。也可以生成后用「GIF 压缩」工具进一步压缩。Reduce the width and the number of frames — halving the width cuts the file to roughly a quarter. You can also run the result through the GIF compressor.
「多张图片合成 GIF 动图」免费吗？数据会上传吗？Is the Images to Animated GIF free? Is my data uploaded?
「多张图片合成 GIF 动图」完全免费，无需注册或安装，手机和电脑都能用；所有处理都在你的浏览器本地完成，输入的内容和文件不会上传到服务器。The Images to Animated GIF is completely free with no sign-up or install and works on phones and desktops; everything runs locally in your browser and nothing you enter is uploaded.