wikimedia/mediawiki-extensions-UploadWizard

UploadWizard Extension, v.1.1

* download the latest available version and extract it to your wiki extension directory. 
* add the following line to LocalSettings.php 

    $wgEnableUploads = true;
    $wgUseImageMagick = true;
    $wgImageMagickConvertCommand = <path to your convert command>;  # often /usr/bin/convert

    wfLoadExtension( 'UploadWizard' );

* check out the Special:Version page to verify the installation 
* make sure that your $IP/images directory is writable by the web server

See https://www.mediawiki.org/wiki/Extension:UploadWizard for further details.