以下内容来自Google:
Windows installation steps
- 0. Download the plug-in (by example from GitHub),
- 1. Copy the plug-in file WebPShop.8bi located in bin\WebPShop_0_3_0_Win_x64 to the Photoshop installation folder, usually C:\Program Files\Adobe\Adobe Photoshop\Plug-ins for x64.
- 2. Restart Photoshop. “Open” and “Save” menu commands should now show WebP files.
Mac installation steps
- 0. Download the plug-in (by example from GitHub),
- 1. Copy the plug-in WebPShop.plugin located in bin/WebPShop_0_3_0_Mac_x64 to the Photoshop installation folder, usually Applications/Adobe Photoshop/Plug-ins.
- 2. Restart Photoshop. “Open” and “Save” menu commands should now show WebP files.
On macOS 10.15+, the prompt “WebPShop.plugin cannot be opened because the developer cannot be verified” can be bypassed by running the following in Terminal (Finder > Applications > Utilities):
sudo xattr -r -d com.apple.quarantine "/Applications/Adobe Photoshop 2020/Plug-ins/WebPShop.plugin"
感谢:
https://developers.google.com/speed/webp/docs/webpshop
❓ 延伸问答与排错指南（FAQ）
Photoshop怎么支持WebP格式？
核心做法是安装 WebPShop 插件，把对应文件复制到 Photoshop 的插件目录里，然后重启软件。完成后，“打开”和“保存”菜单通常就会出现 WebP 选项，能直接处理这种图片格式。
Mac安装WebP插件后打不开怎么办？
如果 macOS 10.15 及以上提示插件无法验证，通常是系统安全限制导致。可在终端执行清除隔离属性的命令，再重新启动 Photoshop，一般就能正常加载插件。
Windows版Photoshop装WebP插件放哪里？
Windows 下要把 WebPShop.8bi 复制到 Photoshop 的 Plug-ins 目录，通常位于安装路径下的 Plug-ins for x64 文件夹。复制完成后重启 Photoshop，检查“打开/保存”是否已支持 WebP。
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