Support for DNG images

[crypticvoyage]

As title, I think it would be awesome if it could handle DNG images from iPhones.

[civilblur]

I had a quick look so far, but I will need to dig a bit more. As DNG is a raw format based on TIFF, there are some nuances to it (I believe), opposed to some more straightforward formats like JPG.

[crypticvoyage]

I wasn't aware it was based on TIFF, learn something new everyday. Apologies if it's too much work, just thought it would be handy to expand the image compatibility library as this tool is amazing! Thank you for looking into it though.

[civilblur]

TIFF and DNG conversion to JPG, PNG, WebP, ICO has been addressed.
Will be included in next release.

Edit 2025-06-07:
TIFF works, but it seems like the output of the DNG images ends up only processing the image's sample "thumbnail" image, so I'll proceed with only supporting TIFF for now. Raw formats like DNG are typically structured differently, so reading the file is not always straightforward.

Edit 2025-06-09:
TIFF support available in v1.1.5.