DxO PhotoLab stores editing data in sidecar files with the extension .dop. DxO appends the .dop extension to the full filename including the original file extension – for example:

• IMG0815.NEF.DOP (Nikon RAW)
• IMG0815.CR2.DOP (Canon RAW)
• IMG0815.JPG.DOP (JPEG)

Excire Foto expects a simple extension such as .DOP for sidecar file detection – e.g. IMG0815.DOP. As a result, DxO sidecar files are not recognized by default.

Workaround

Open the preferences via the menu Excire Foto → Preferences (macOS) or Edit → Preferences (Windows) and navigate to the Sidecar files section. In the Whitelist for sidecar file formats, add all relevant combined extensions, e.g.:

• .nef.dop
• .cr2.dop
• .crw.dop
• .arw.dop
• .raf.dop
• .heic.dop
• .hif.dop
• .jpg.dop
• .jpeg.dop
• .tif.dop
• .tiff.dop

Excire Foto will then correctly recognize and handle the associated sidecar files.

Note: Since DxO appends the full original file extension to the sidecar filename, a separate entry is required in the whitelist for each file format you use.