Manual:$wgJpegTran

Translate this page

Images: $wgJpegTran
Path to jpegtran, for lossless JPEG rotation.
Introduced in version:	1.21.0 (Gerrit change 44005; git #e288e403)
Removed in version:	Still in use
Allowed values:	(absolute path) or `false`
Default value:	`'/usr/bin/jpegtran'`
Other settings: Alphabetical \| By function

Details

Path to the jpegtran utility. Doesn't seem to be used for much (as of MediaWiki 1.22), other than to provide lossless rotation functionality in the MediaWiki API (see [1]). jpegtran is not even required for image auto-rotation.