file's type sorting

How, in Dt, can I sort images by file’s type? (*.cr2, *.jpg, *.tiff…)

You can filter by filename and put “.cr2” in the search box, for example. I’m not sure it’s possible to sort by extension though.

If it were ‘really’ important for a large group of images then: first sort by file extension and give each extension a color tag and then sort by tag.

You mean filter?