juliador
IImmich
•Created by juliador on 5/11/2025 in #help-desk-support
Immich (Docker) compressing iPhone ProRAW DNG — how to preserve full original file?
Hey everyone! I did some digging and found out that Immich doesn’t have a licensing agreement with Adobe to properly handle the ProRAW package from iOS. Since Adobe manages the DNG format, all the detailed photo data gets lost when the image is flattened like a JPG and then stored as a DNG.
The only way to preserve the original quality is to manually upload the file from the iPhone directly into Immich’s photos folder—this way it accepts the full-quality DNG without conversion. So the issue is really with the sync process.
For example, I also tested SyncPhotos from Ugreen NAS, and it behaves the same way. Their support team kindly explained that full ProRAW support might come in the future, but it requires third-party licensing and may never arrive—or might take a long time.
Same story with Immich, unfortunately. I’m honestly surprised more people haven’t reported this. Seems like professional users either don’t use Immich or don’t rely on ProRAW for future editing. Cheers!
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