I sometimes need to preview the image I edit in GIMP full screen. I could do this by exporting current image and opening it in a viewer like Geeqie, but that's quite inconvenient. Is there a better way to get a fullscreen preview without leaving GIMP?
Thanks to this post I have a workaround for the lack (or hiddenness) of preview feature in GIMP. Full screen mode can be used for this. You can set it up so that it has different set of GUI options from windowed mode. Configure it as follows.
Now, after you press F11 followed by Tab, you'll be in preview mode without toolbars (which are toggled by Tab). To fit the image to screen, press Ctrl+Shift+J
For me it didn't initially hide all the elements I unchecked, so I had to do it again, now from the menu. But after I did this, this state for fullscreen mode was saved, so now I only have to press F11, Tab to get completely fullscreen preview.