Thumbnails will generally not be deleted except if an image is deleted, overwritten with another file or purged (ie appending ?action=purge to the file description page)
-- bawolff On Monday, July 31, 2017, Krabina Bernhard <krab...@kdz.or.at> wrote: > Dear all, > > thank you for your help, it is much appreciated. > > An additional question regarding thumbnailing: do thumbs ever get deleted by MediaWiki? > They probably get deleted once the image gets deleted. But other than that, do all generated thumbnails exist as long as the image exists? > > cheers, > Bernhard > > > ----- Am 29. Jul 2017 um 2:22 schrieb Brian Wolff bawo...@gmail.com: > >> 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 <krab...@kdz.or.at> 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 > > _______________________________________________ > 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
