No previews of big files possible


I use DT for collections of PPT, pictures and Sketch files (.sketch) and all works fine. The main use case for me is to visually explore files with specific styles therefore I mostly use the 2-pane-view to get a preview of my files (after rightclick --> thumbnails --> create). But for files bigger than approx. 100 MB this doesn’t work, can’t see the previews, only the icons. Is there a possibility to force the generation of bigger files yet? Or a workaround?

Thanks and greeting from Berlin!


In case of third-party file formats (PPT, Sketch) this is completely handled by macOS and its Quick Look framework. But at least pictures should be always displayed. What kind of picture isn’t working?

In addition, please choose Help > Report Bug while pressing the Alt modifier key and send the email to cgrunenberg - at - Thanks!