// 免费在线工具
HEIC 转 PNG 转换器
将 iPhone HEIC 照片转换为无损 PNG 格式。非常适合在 Photoshop 中编辑或归档，实现零画质损失。适用于任何现代浏览器。免费且保护隐私。
何时应该将 HEIC 转换为 PNG 而不是 JPG
当您需要 iPhone 照片的无损副本以进行专业编辑时，请选择 PNG。与 JPEG 不同，PNG 能够精确存储每个像素，不会产生压缩瑕疵——这使其成为在 Photoshop、Lightroom 或 Affinity Photo 中进行后期编辑的理想母版格式。PNG 还支持透明度，因此如果您计划稍后去除背景，PNG 是最佳的输出格式。
HEIC 转换的浏览器支持
HEIC 文件使用 HEVC 编解码器，该解码器内置于 macOS 和 iOS 中，但在 Windows 和 Android 上的浏览器中并不具备。在这些平台上，本工具会根据需要加载一个小型开源解码器（约 1.3 MB），并在您的设备本地对照片进行解码，因此转换功能在任何地方都可使用。Safari 浏览器可原生解码 HEIC，无需额外下载。
HEIC 转 PNG 的文件大小
文件大小预计会大幅增加：一张 3 MB 的 HEIC 照片通常会变成 15–30 MB 的 PNG。这是正常现象——PNG 的无损压缩效率远低于 HEIC 的 HEVC 编解码器。如果文件大小很重要，可以改用转换为 JPG（92 画质），这样可以在保持出色的画质同时生成小得多的文件。
常见问题
PNG provides a lossless copy - no additional quality is lost during conversion. This matters if you plan to edit, re-save, or re-export the image multiple times. JPEG introduces additional compression artifacts each time it's re-encoded. For iPhone photos you want to use as editing masters, HEIC to PNG is the professional choice.
Yes. Windows and Android browsers cannot decode HEIC on their own, so this tool loads a small open-source decoder (about 1.3 MB) the first time you pick a HEIC file and then converts the photo locally. Your file is never uploaded - only the decoder is downloaded, and it is cached for subsequent conversions. Safari on macOS and iOS decodes HEIC natively and skips that download.
Typically 5–10 times larger. HEIC achieves exceptional compression using HEVC technology. A 3 MB HEIC portrait photo might become a 20–30 MB PNG. If file size is a concern, use HEIC to JPG instead (quality 92 produces roughly 2–4 MB output from the same 3 MB HEIC).
No - HEIC already applied lossy compression when the iPhone captured the photo. Converting to PNG creates a lossless copy of the HEIC's current quality, but it cannot recover detail that the original HEIC compression discarded. The PNG will look identical to the HEIC at normal viewing conditions.