OpenRaster image (.ora) support in XnView MP

[nicopunktse]

I am a bit confused about whether the OpenRaster image (.ora) format actually is supported by XnView MP? I know there used to be a plugin for that format in XnView Classic (which was 32-bit only). Is a plugin still required, or is the format supposed to be natively supported in XnView MP since it is listed among the supported file formats?

When I browse a folder containing .ora files with XnView, the files do not appear when I have the filter set to show only Image files. They do show up when I filter for "Archives" or "All" (and for some reason with "Videos + folders"). I know the files technically are .zip files, but aren't they supposed to be shown as images?

The main problem, however, is that it does not seem that XnView MP actually can open .ora files? I have tried .ora files saved from GIMP, Krita, MyPaint, Drawpile, LazPaint, and Pinta. The files will open just fine in all those apps (plus File Viewer Plus) but not in XnView MP. I get an error message saying "File cannot be read" from all files except the one saved in GIMP. That file will, however, only show a small thumbnail and not the actual image.

TL;DR:
What is the status of OpenRaster (.ora) support in XnView MP?

[nicopunktse]

OK, so I assume there is NO support for .ora files in XnView MP.

Is this list of supported formats intended for XnView Classic, XnView MP, or both?
https://www.xnview.com/en/image_formats/

[xnview]

i work to build the old ora plugin for XnView MP, could you send me a ora sample file and the jpeg version?

[nicopunktse]

That is excellent to hear! Thank you for your hard work!

Here’s a test image in .ora format, exported using GIMP, Krita, and MyPaint, along with the corresponding JPG versions for comparison.
https://1drv.ms/u/s!AkiDqVqEXD3M3Pk6dMf ... w?e=lo1nxh

Let me know if you'd prefer me to send them differently or if there's anything else you need.

[xnview]

See issue for current status and some details.