Hi, MediaWiki will by default only create image thumbs for needed sizes at time the size is used on a page. So for example when you add an image to a page, MW will create the thumbnail sizes needed to display an article. However, if the image is uploaded but never added to a normal page, then thumbnails for the image won't be generated (except for those needed on image description page, which are different sizes)
There is a second mode mediawiki can operate in, where images are rendered on demand when someone views the image (so-called "404 thumb handling"). Wikimedia wikis use this mode. In this mode, thumbs are created on first view. Additionally in this mode, $wgImageLimits creates additional links on the image description page. This mode is generally more efficient (especially on page saves), and also more reliable in the event that there is a missing thumb. For information to set up 404-thumb rendering see https://www.mediawiki.org/wiki/Manual:Thumb.php -- Brian On Fri, Jul 28, 2017 at 9:18 AM, Krabina Bernhard <[email protected]> wrote: > Dear MediaWiki experts, > > I cannot really figure out the behaviour of MediaWiki regarding thumbnailing. > What I want to achieve is that my MediaWiki installation produces thumbnails > in a specified size. > > What I did after reading through several help pages is this: > --------------------------- > # Images und Thumbnails > $wgThumbLimits = array( 80, 250, 390 ); > $wgDefaultUserOptions['thumbsize'] = 1; // thumb size 250 > > $wgImageLimits = array( array( 80, 90 ), array( 800, 600 ), array( 1280, 1024 > ) ); > $wgDefaultUserOptions['imagesize'] = 2; // image size 800, 600 > --------------------------- > > In my opinion this should guarantee that for every image uploaded, there is > an 80, 250 and 390px sized thumbnail. In many cases this is true, but there > are some cases were I can find a 100px thumbnail, but no 80px thumbnail. > > If I understand it correctly, this can perfectly be the case if any user sets > his/her preference to 100px. I don't mind so much extra sizes to be produced, > but I want to make sure that a 80px thumbnail is there. > > Maybe in the cases where it is not present the images were uploaded before > the above mentioned setting was made? But how can I get the wiki to redo > thumbnails in my desired size? > > cheers, > Bernhard > > _______________________________________________ > MediaWiki-l mailing list > To unsubscribe, go to: > https://lists.wikimedia.org/mailman/listinfo/mediawiki-l _______________________________________________ MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
