🖼️ AVIF 转 PNGAVIF to PNG Converter

使用说明与常见问题How-to & FAQ

「AVIF 转 PNG」是什么？What is the AVIF to PNG Converter tool?

把 AVIF 图片批量转换为无损 PNG：保留透明背景，解码后的每个像素原样写入，适合继续编辑、做设计稿或上传到不支持 AVIF 的网站，多张打包 ZIP，图片只在浏览器本地处理。Batch-convert AVIF images to lossless PNG with transparency kept — every decoded pixel is written as-is, ready for editing, design work or sites that don't accept AVIF. Download each file or a ZIP; images are processed only in your browser.

如何使用「AVIF 转 PNG」？How do I use the AVIF to PNG Converter tool?

在「AVIF 转 PNG」中，选择或拖入文件，然后点击「全部下载（ZIP）」按钮即可。In the AVIF to PNG Converter: Choose or drop your files, then click "Download all (ZIP)".

为什么 PNG 比原来的 AVIF 大很多？Why is the PNG so much bigger than the AVIF?

AVIF 是有损压缩，体积很小；PNG 是无损格式，要把解码后的每个像素完整保存，所以照片转成 PNG 通常会大好几倍到十几倍。这不会让画质变好，但之后再编辑、再保存不会继续损失。只想要小文件时可以转 JPG 或 WebP。AVIF is lossy and very compact, while PNG is lossless and stores every decoded pixel, so a photo often grows several to more than ten times. Quality does not improve, but further edits and saves lose nothing more. For small files, convert to JPG or WebP instead.

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 PNG 文件会变大吗？Will the PNG be bigger?

可能会。PNG 是无损格式，照片转成 PNG 往往比 JPG/WebP 大好几倍，但不会再损失画质，适合需要继续编辑或需要透明背景的图片。Often, yes. PNG is lossless, so photos are usually several times larger than JPG/WebP, but no further quality is lost — good for images you will keep editing or that need transparency.

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 PNG」免费吗？需要注册吗？Is the AVIF to PNG Converter free? Do I need an account?

「AVIF 转 PNG」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 PNG 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.