🖼️ AVIF 转换器（AVIF 转 JPG/PNG/WebP）AVIF Converter (AVIF to JPG / PNG / WebP)

使用说明与常见问题How-to & FAQ

「AVIF 转换器（AVIF 转 JPG/PNG/WebP）」是什么？What is the AVIF Converter (AVIF to JPG / PNG / WebP) tool?

把 AVIF 图片批量转换为 JPG、PNG 或 WebP：解决 AVIF 在旧版 Windows、Photoshop、Office 和部分网站上打不开的问题，可调质量和透明背景色，多张打包 ZIP 下载，图片只在浏览器本地处理。Batch-convert AVIF images to JPG, PNG or WebP — for older Windows, Photoshop, Office and websites that cannot open AVIF. Adjust quality and the background for transparency, then download each file or a ZIP. Images are processed only in your browser.

如何使用「AVIF 转换器（AVIF 转 JPG/PNG/WebP）」？How do I use the AVIF Converter (AVIF to JPG / PNG / WebP) tool?

在「AVIF 转换器（AVIF 转 JPG/PNG/WebP）」中，按需设置「转换为」、「质量」、「透明处背景色（JPG）」等选项，然后点击「全部下载（ZIP）」按钮即可。支持拖放文件。In the AVIF Converter (AVIF to JPG / PNG / WebP): Set "Convert to", "Quality", "Background for transparency (JPG)", then click "Download all (ZIP)". Drag-and-drop files is supported.

AVIF 是什么格式？What is AVIF?

AVIF 是基于 AV1 视频编码的新一代图片格式，同等观感画质下通常比 JPG 小不少（节省多少取决于图片内容和编码设置），支持透明和 HDR。缺点是 Windows 10 旧版、Photoshop 旧版、Office 和很多上传表单还不支持，所以常常需要转成 JPG 或 PNG。AVIF is a modern image format based on the AV1 video codec, usually noticeably smaller than JPG at similar visual quality (how much depends on the image and encoder settings), with transparency and HDR. But older Windows 10, older Photoshop, Office and many upload forms don't support it, so it often needs converting to JPG or PNG.

转成哪种格式好？Which output should I choose?

照片选 JPG（体积小、兼容性最好）；需要透明背景或要继续编辑选 PNG（无损）；只在网页使用、又想保持较小体积可以选 WebP。Choose JPG for photos (small and universally compatible), PNG when you need transparency or will keep editing (lossless), and WebP for web use with small files.

能把 JPG/PNG 转成 AVIF 吗？Can it convert JPG/PNG to AVIF?

暂时不能。浏览器的 Canvas 目前不提供 AVIF 编码，本工具只做 AVIF → JPG/PNG/WebP 的解码转换。Not yet. Browser Canvas does not offer an AVIF encoder, so this tool converts AVIF to JPG, PNG or WebP only.

HDR、动画 AVIF 和元数据会怎样？What about HDR, animated AVIF and metadata?

HDR 图片会按屏幕的标准动态范围（sRGB）输出；动画 AVIF 只转换第一帧；EXIF（包括位置）不会保留。所有处理都在浏览器本地完成，图片不会上传。HDR images are output in standard dynamic range (sRGB); animated AVIF converts the first frame only; EXIF data, including location, is not kept. Everything runs locally and images are never uploaded.

图片会被上传到服务器吗？Are my images uploaded?

不会。「AVIF 转换器（AVIF 转 JPG/PNG/WebP）」使用浏览器 Canvas 在本地处理图片，处理后的文件直接从你的浏览器下载。No. The AVIF Converter (AVIF to JPG / PNG / WebP) processes images locally with the browser Canvas API and the result downloads straight from your browser.

「AVIF 转换器（AVIF 转 JPG/PNG/WebP）」免费吗？需要注册吗？Is the AVIF Converter (AVIF to JPG / PNG / WebP) free? Do I need an account?

「AVIF 转换器（AVIF 转 JPG/PNG/WebP）」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 Converter (AVIF to JPG / PNG / WebP) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.