I have many pages and many images.
There is one image per page.
Images are light (< 100k).
For personnal reasons, I resize some images with ImageMagick with the following command :
% mogrify -resize 50% foobar.jpg
then I use it in a dokuwiki page.
- The images converted by ImageMagick don't show. Only its name does.
- The images saved by The Gimp do appear.
- When I open an non-appearing-imagemagick-converted file with The Gimp and saves it, then use it in a page, it does appear.
Though this does not seem to be a Dokuwiki bug, this might be valuable to search if this comes from php, from gd, from apache, from anything else... ?
My php-error logs don't show anything, but it's a long time since I was confident in my debugging skills.
Maybe you'll do better. Here is a page with the two files described above :
(wiki_brut.jpg directly comes out the IM converter, and wiki_gimped.jpg has just been saved by Gimp)