Topic on Project:Support desk

i'm having trouble with uploading images on my mediawiki, after i uploaded an picture with jpg or png tail i always have this bug :

Error creating thumbnail: convert: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/556. convert: no images defined `/var/folders/j9/5b28t03x40x43m8nzs2tkcc00000gn/T//transform_6517b43fe0e8.jpg' @ error/convert.c/ConvertImageCommand/3300. Error code: 1

Could anyone have idea ? im really appreciated for any hints and advices .

Kind regards

Which image software is used? https://www.mediawiki.org/wiki/Manual:Errors_and_symptoms#Image_Thumbnails_not_working_and/or_appearing

Thanks Malyacko for the answer ! I used ImageMagick .

that is what i got after querrying the version :

Version: ImageMagick 6.9.9-40

The Problem is solved i just changed the path of $wgImageMagickConvertCommand = "/opt/local/bin/convert";

Thank you so much Malyacko for your hints