🖼️ PNG 转 JPGPNG to JPG Converter
把 PNG 图片批量转换为 JPG：拖入多张图片一键转换，可调质量和透明背景色，可打包下载 ZIP，图片只在浏览器本地处理，不会上传。Convert PNG images to JPG in bulk — drop in several files, adjust quality and the background for transparent areas, and download them individually or as a ZIP. Images are processed locally and never uploaded.
使用说明与常见问题How-to & FAQ
「PNG 转 JPG」是什么？What is the PNG to JPG Converter tool?
把 PNG 图片批量转换为 JPG：拖入多张图片一键转换，可调质量和透明背景色，可打包下载 ZIP，图片只在浏览器本地处理，不会上传。Convert PNG images to JPG in bulk — drop in several files, adjust quality and the background for transparent areas, and download them individually or as a ZIP. Images are processed locally and never uploaded.
如何使用「PNG 转 JPG」？How do I use the PNG to JPG Converter tool?
在「PNG 转 JPG」中，按需设置「质量」、「透明处背景色」等选项，然后点击「全部下载（ZIP）」按钮即可。支持拖放文件。In the PNG to JPG Converter: Set "Quality", "Background for transparency", then click "Download all (ZIP)". Drag-and-drop files is supported.
透明背景会怎样？What happens to transparency?
JPG 不支持透明，透明区域会填充为你选择的背景色（默认白色）。质量 90 左右通常肉眼看不出差别，数值越低文件越小。JPG has no transparency, so transparent areas are filled with your background color (white by default). Quality around 90 is visually lossless for most photos; lower means smaller files.
图片会上传到服务器吗？Are my images uploaded?
不会。解码和编码都用浏览器的 Canvas 在本地完成，文件不会离开你的设备；照片中的 EXIF 元数据（包括位置）会被去除。No. Decoding and encoding happen locally with the browser's Canvas, so files never leave your device; EXIF metadata (including location) is removed.
「PNG 转 JPG」免费吗？需要注册吗？Is the PNG to JPG Converter free? Do I need an account?
「PNG 转 JPG」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 PNG to JPG 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.