Greg B

jxlinfo output may be confusing

3

For some images, the data reported by jxlinfo may be a little confusing, particularly for occasional users of this handy tool. If you encode a 32-bit image to JXL in...

Please add support for HDR JPG gain maps

2

## Feature request ### What are you trying to achieve? Add support for transcoding JPG gain maps. These images enable the ability to share images edited for modern displays that...

No support for HDR gain maps (transcoded to SDR-only)

8

**Describe the bug** When a JPG image with an HDR ("high dynamic range") gain map is transcoded, the gain map is stripped. This results in significant degradation of the image...

AVIF images are corrupted (NCLX / CICP values improperly change for HDR or wide gamut images)

31

### ImageMagick version 7.1.1-39 Q16-HDRI aarch64 22428 ### Operating system MacOS ### Operating system, version and so on 15.0.1 (24A348) ### Description When an AVIF image is processed, the NCLX...

Use of ICC profiles within the auxiliary (secondary) image varies quite a bit by encoder for JPGs. Libultra currently uses a linear Google ICC profile, Apple uses a different (PQ)...

While the CLI tool (demo app) was probably originally just intended to show usage of the library, it has become a very useful tool on its own. It would be...

Add tracking for "Ultra HDR JPG"

3

HDR image support is growing on the web and it will be important to understand which browsers and how widespread support is for HDR images. Chrome Canary (on desktop and...