iPhone storage full? What to delete first
Empty Recently Deleted, then large videos, duplicates, screenshots and message attachments. The order that frees the most iPhone space with the least regret.
Why does HEIC take less space?
HEIC is the format iPhones have used for photos by default for years. It stores the same shot in roughly half the space of JPEG. Photos that came from other cameras, from chats or from older phones are often still JPEG.
What does DustFox do?
It converts the listed photos to HEIC on the device. The figure on the card is an estimate; the real gain is measured after the conversion and shown to you. Photos that are already HEIC or already efficiently compressed are not listed.
Is it lossless?
No, and DustFox does not pretend it is. Re-encoding leaves a difference that is very hard to see, but it is there. For photos you care about at full fidelity, such as scans you might print large, skip them.
What changes after the conversion?
The new copy does not stay in the albums the original was in, and on an edited photo the “Revert to Original” option is gone. The original waits 30 days in Recently Deleted.
