Extract subimages from multi-image HEIC files as JPEG in Shortcuts on iOS and macOS
A shortcut for iOS and macOS that can for example be used to extract all the subimages from Apple's multi-image wallpapers. Can also be used to batch convert both single-image and multi-image files to JPEG.
There doesn't seem to be any image conversion app on the App Store that's able to extract subimages from multi-image HEIC file, only the main image. Same with the Convert Image action in Shortcuts app.
There's also a Get Frames from Image action, but that's only for animated GIF and photo burst files, according to the description. It actually accepts HEIC files as well, but unfortunately only the main image get's extracted here too.
What about tricking the action to extract the subimages by changing the file extension to
That's exactly what this shortcut is doing.
There doesn't seem to be any image conversion app on the App Store that's able to extract subimages from multi-image HEIC file, only the main image. Same with the Convert Image action in Shortcuts app.
There's also a Get Frames from Image action, but that's only for animated GIF and photo burst files, according to the description. It actually accepts HEIC files as well, but unfortunately only the main image get's extracted here too.
What about tricking the action to extract the subimages by changing the file extension to
gif, without the resulting images ending up as GIFs, despite the foreboding extension name?That's exactly what this shortcut is doing.