MediaWiki: Improving thumbnail quality
Anybody who's using MediaWiki might discover that the automatically created thumbnails are of low (if not really bad) quality. This might be a less pressing problem when using SVGs, but many of my JPEGs looked really really bad. The MediaWiki documentation suggest using ImageMagick instead of of GD (see http://www.mediawiki.org/wiki/Manual:Image_Administration#Image_thumbnailing ). However, that's what I'm using. Improving Quality I've done two steps to improve the quality of the thumbnails. Both might or might not be applicable to your images - it often depends on the type of content you present, the quality and size of the images you upload and their content (images of nature, computer-generated graphs, etc.). JPEG quality MediaWiki uses an JPEG quality of "80%". This compresses the thumbnails (they are smaller and can be downloaded faster by the users). However, the quality suffers with that lower number, as more artifacts can be seen. I tried setting the