HEIC 转 JPG
把 iPhone 的 HEIC 照片免费转成通用 JPG，本地处理不上传。
How to use / 使用步骤
- Upload the .heic photos from your iPhone (multiple allowed).上传 iPhone 拍的 .heic 照片（可多张）。
- The tool decodes and converts them to universal JPG locally.工具在本地解码并转换为通用的 JPG。
- Download the JPGs — they open anywhere.下载 JPG，任何设备和软件都能打开。
About HEIC to JPG Converter / 关于本工具
HEIC (High Efficiency Image Container) is the format iPhones use by default since iOS 11. It stores photos at about half the size of JPEG with the same quality, which is great on the phone — but awkward everywhere else. Windows, many websites, older photo software and lots of printers can't open HEIC, so you get an error or a blank thumbnail. Converting to JPG solves this instantly: JPG is the most widely supported image format in the world and works on every device, browser and app.
HEIC（高效图像容器）是 iPhone 自 iOS 11 起的默认格式。它能以 JPEG 一半左右的体积存下同等画质，在手机上很棒——但到了别处就麻烦。Windows、许多网站、老旧的看图软件和不少打印机都打不开 HEIC，于是你看到报错或空白缩略图。转成 JPG 立刻解决：JPG 是全世界兼容性最好的图片格式，任何设备、浏览器和应用都能用。
How conversion works here / 本工具如何转换
Decoding HEIC in a browser needs a specialised library, which this tool loads only when you actually convert a HEIC file — keeping the page fast for everyone else. The decode and the JPG encode both happen on your device, so your photos are never uploaded. You can convert a whole batch at once and download them together.
在浏览器里解码 HEIC 需要专门的库，本工具只在你真正转换 HEIC 文件时才加载它——让其他人的页面保持轻快。解码和 JPG 编码都在你的设备上完成，照片绝不上传。可一次批量转换并一起下载。