[Digikam-users] What triggers digiKam to rebuild all the thumbnails?

[Marcel Wiesweg]

> When opening digiKam, what triggers digiKam to rebuild all the
> thumbnails (a very slow process on my old computer)? I thought it was
> if the filemodify date/time had changed. But I guess I was wrong.

A change of the file size is an even more reliable indicator that the file 
changed than the modification date...