📱 HEIC 转 GIF（iPhone 照片）HEIC to GIF Converter

使用说明与常见问题How-to & FAQ

「HEIC 转 GIF（iPhone 照片）」是什么？What is the HEIC to GIF Converter tool?

把 iPhone 的 HEIC/HEIF 照片批量转换为 GIF：自动 256 色调色板，适合要求 GIF 的论坛、表情和老旧系统，多张打包 ZIP，照片只在浏览器本地处理。Batch-convert iPhone HEIC/HEIF photos to GIF with an automatic 256-colour palette — for forums, stickers and older systems that want GIF. Download each file or a ZIP; photos are processed only in your browser.

如何使用「HEIC 转 GIF（iPhone 照片）」？How do I use the HEIC to GIF Converter tool?

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

照片转成 GIF 会有什么变化？How does a photo change when it becomes GIF?

GIF 最多 256 种颜色，手机照片里的天空、皮肤等渐变会出现色带和噪点，文件也不一定更小。如果只是想在电脑上打开或发给别人，转 JPG 或 PNG 效果更好；GIF 适合截图、贴纸和需要 GIF 格式的场合。GIF has at most 256 colours, so gradients such as sky and skin in phone photos show banding and noise, and the file isn't necessarily smaller. To open a photo on a computer or share it, JPG or PNG look better; GIF suits screenshots, stickers and places that require GIF.

HEIC 是什么？第一次为什么慢？What is HEIC, and why is the first run slow?

HEIC 是 iPhone 和不少安卓手机默认的照片格式（HEIF 容器 + HEVC 编码），Windows、网页和很多软件不能直接打开。解码组件 heic2any（MIT，内含 LGPL 许可的 libheif）约 1.3 MB，第一次转换时才加载；实况照片和连拍只取主图。少数带透明通道的 HEIC（iPhone 照片没有）目前读不出透明信息，透明区域会按不透明处理，转换后会在结果旁提示。HEIC is the default photo format on iPhones and many Android phones (HEIF container + HEVC), which Windows, websites and many apps cannot open directly. The decoder, heic2any (MIT, bundling LGPL-licensed libheif), is about 1.3 MB and loads on first use; Live Photos and bursts give the main image only. The rare HEIC files with an alpha channel (iPhone photos have none) can't have their transparency read yet, so transparent areas come out opaque; the result row says so.

转成 GIF 画质会变差吗？Does GIF reduce quality?

GIF 最多只有 256 种颜色，工具会自动量化调色板；照片和渐变会出现色带，图标、文字和简单图形效果最好。GIF is limited to 256 colors, so the palette is quantised automatically; photos and gradients may show banding, while icons, text and simple graphics work best.

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.

「HEIC 转 GIF（iPhone 照片）」免费吗？需要注册吗？Is the HEIC to GIF Converter free? Do I need an account?

「HEIC 转 GIF（iPhone 照片）」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 GIF 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.