🖼️ HEIC 转 PNGHEIC to PNG Converter
把 iPhone 等设备拍的 HEIC 照片批量转换为 PNG：拖入多张图片一键转换，按解码后的像素无损写入 PNG，可打包下载 ZIP，图片只在浏览器本地处理，不会上传。Convert HEIC photos from iPhones and other devices to PNG in bulk — drop in several files, the decoded pixels are written to PNG losslessly, 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
「HEIC 转 PNG」是什么？What is the HEIC to PNG Converter tool?
把 iPhone 等设备拍的 HEIC 照片批量转换为 PNG：拖入多张图片一键转换，按解码后的像素无损写入 PNG，可打包下载 ZIP，图片只在浏览器本地处理，不会上传。Convert HEIC photos from iPhones and other devices to PNG in bulk — drop in several files, the decoded pixels are written to PNG losslessly, and download them individually or as a ZIP. Images are processed locally and never uploaded.
如何使用「HEIC 转 PNG」？How do I use the HEIC to PNG Converter tool?
在「HEIC 转 PNG」中，选择或拖入文件，然后点击每个结果旁的「下载」按钮即可；有多个文件时也可以点「全部下载（ZIP）」一次打包下载。In the HEIC to PNG Converter: Choose or drop your files, then click the Download button next to each result (with several files, "Download all (ZIP)" saves them together).
转成 PNG 会变大吗？透明背景能保留吗？Will the PNG be bigger, and is transparency kept?
通常会变大：PNG 是无损格式，照片转成 PNG 往往比 JPG/WebP 大好几倍，但解码后的像素不会再损失画质，适合需要继续编辑的图片。少数带透明通道的 HEIC（iPhone 照片没有）目前读不出透明信息：输出是不透明的，原本透明的区域会显示图片里存着的底色，转换后会在结果旁提示。Usually bigger: PNG is lossless, so photos are often several times larger than as JPG/WebP, but the decoded pixels lose no further quality, which suits images you'll keep editing. The rare HEIC files with an alpha channel (iPhone photos have none) can't have their transparency read yet: the output is opaque and areas meant to be transparent show the colours stored underneath; the result row says so.
HEIC 是什么？为什么第一次比较慢？What is HEIC, and why is the first run slow?
HEIC 是 iPhone 默认的照片格式，大多数浏览器和 Windows 软件不能直接打开。解码组件（heic2any，内含 LGPL 许可的 libheif）约 1.3 MB，第一次转换时才加载；照片的 EXIF 信息（拍摄时间、位置）不会保留。HEIC is the iPhone's default photo format, which most browsers and Windows apps cannot open. The decoder (heic2any with LGPL-licensed libheif) is about 1.3 MB and loads on first use; EXIF data such as capture time and location is not kept.
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.
「HEIC 转 PNG」免费吗？需要注册吗？Is the HEIC to PNG Converter free? Do I need an account?
「HEIC 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 HEIC 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.