Add HEIC file format as allowed for pictures upload
I’m not sure if Windows has native HEIC decoder?
It has
https://www.microsoft.com/store/productId/9PMMSR1CGPWG
I don’t consider an additional app to install native tho. Still it can be used from UWP apps: https://docs.microsoft.com/en-us/uwp/api/windows.graphics.imaging.bitmapdecoder.heifdecoderid
The problem is that there’s no way to determine if the app is actually installed, apart from specific error handling while trying to decode it.
Can I have a sample file?
Well, might be worth adding a comment here. The problem is that Windows doesn't natively support HEIC codec, consequently it doesn't provide some metadata that's necessary to properly process and send pictures, and this is width and height of the image.
Do you mean that you cannot read width and height from HEIC without an additional library?