Ultra HDR by Volumique
iOS app by les éditions volumiques. Graphics & Design · les éditions volumiques
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- 0.99 USD
- In-app purchases
- Unknown
- Version
- 1.3
- Listing last refreshed
- 2026-09-17
View the original store listing
Store description excerpt
Ultra HDR creates an Ultra HDR JPEG locally from an SDR image and a grayscale gain map with identical pixel dimensions. Import JPEG, PNG, TIFF or HEIC images using buttons, drag and drop or the File menu. Rotate each input independently, invert the gain map if needed, and adjust boost and gamma. Generate a preview, then save the output to a location you choose. Output is verified using MPF, ISO 21496-1 and libultrahdr. An HDR display and a compatible viewer are required to see extended brightness; the built-in preview provides SDR/HDR comparison and reports the display’s available headroom. The SDR layer remains compatible with other software. Images are processed on your Mac without an account, ads, telemetry or image uploads. Light/dark themes and French/English interface. Support and privacy documents can also be read offline.
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