🖼️ AVIF 转 GIFAVIF to GIF Converter
把 AVIF 图片批量转换为 GIF：自动生成最多 256 色的调色板，可选择保留透明或填充背景色，适合需要 GIF 的聊天软件、论坛和旧系统，多张可打包 ZIP，全部在浏览器本地完成。Batch-convert AVIF images to GIF with an automatic palette of up to 256 colours, keeping transparency or filling it with a background colour — handy for chat apps, forums and older systems that want GIF. Download each file or a ZIP; everything runs locally in your browser.
使用说明与常见问题How-to & FAQ
「AVIF 转 GIF」是什么？What is the AVIF to GIF Converter tool?
把 AVIF 图片批量转换为 GIF：自动生成最多 256 色的调色板，可选择保留透明或填充背景色，适合需要 GIF 的聊天软件、论坛和旧系统，多张可打包 ZIP，全部在浏览器本地完成。Batch-convert AVIF images to GIF with an automatic palette of up to 256 colours, keeping transparency or filling it with a background colour — handy for chat apps, forums and older systems that want GIF. Download each file or a ZIP; everything runs locally in your browser.
如何使用「AVIF 转 GIF」？How do I use the AVIF to GIF Converter tool?
在「AVIF 转 GIF」中，选择或拖入文件，按需设置「透明处背景色」等选项，然后点击「全部下载（ZIP）」按钮即可。In the AVIF to GIF Converter: Choose or drop your files, set "Background for transparency", then click "Download all (ZIP)".
AVIF 转 GIF 适合什么图片？Which AVIFs suit GIF?
图标、标志、贴纸、截图和简单插画转成 GIF 效果最好；照片和渐变在 256 色下会出现色带和颗粒，这类图片更适合转成 PNG 或 JPG。AVIF 的半透明边缘在 GIF 里只能是全透明或不透明，边缘可能出现锯齿，可改为填充背景色。Icons, logos, stickers, screenshots and simple illustrations work best as GIF. Photos and gradients show banding and grain with 256 colours — convert those to PNG or JPG instead. GIF transparency is all-or-nothing, so soft AVIF edges may look jagged; filling with a background colour avoids that.
AVIF 是什么？为什么有的软件打不开？What is AVIF, and why won't some apps open it?
AVIF 是基于 AV1 编码的新一代图片格式，体积小、画质好，很多网站和手机已经在用；但旧版 Windows 照片查看器、Photoshop 的旧版本、Office 和不少上传表单还不支持。转换后的文件可以在这些软件里正常打开。需要 Chrome、Edge、Firefox 或 Safari 16 以上来解码。AVIF is a newer image format based on AV1 that gives small files with good quality, and many sites and phones already use it — but older Windows photo viewers, older Photoshop versions, Office and many upload forms still don't accept it. The converted file opens normally there. Decoding needs Chrome, Edge, Firefox or Safari 16+.
HDR、动画 AVIF 和 10 位色深会怎样？What about HDR, animated AVIF and 10-bit images?
HDR 和 10/12 位 AVIF 会按浏览器的标准动态范围（sRGB、8 位）输出；动画 AVIF 只转换第一帧，结果中会注明。HDR and 10/12-bit AVIFs are output in the browser's standard dynamic range (sRGB, 8-bit); animated AVIFs convert their first frame only, and the result says so.
转成 GIF 画质会变差吗？Does GIF reduce quality?
GIF 最多只有 256 种颜色，工具会自动量化调色板；照片和渐变会出现色带，图标、文字和简单图形效果最好。可选择保留透明（GIF 只支持全透明或不透明）。GIF is limited to 256 colors, so the palette is quantised automatically; photos and gradients may show banding, while icons, text and simple graphics work best. Transparency can be kept (GIF supports only fully transparent or opaque pixels).
图片会上传吗？Are my images uploaded?
不会。解码和编码都在你的浏览器里完成，文件不会离开你的设备；照片中的 EXIF 元数据（包括拍摄位置）不会写入输出文件。No. Decoding and encoding happen in your browser and files never leave your device; EXIF metadata in photos (including location) is not written to the output.
「AVIF 转 GIF」免费吗？需要注册吗？Is the AVIF to GIF Converter free? Do I need an account?
「AVIF 转 GIF」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The AVIF to GIF Converter is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.