Use GIMP graphic editing software to export brush image file (*.gbr) to JPEG bitmap image format (*.jpg).
Convert Gerber (PCB) file to JPEG bitmap image format.
We have found 2 software records in our database eligible for .gbr to .jpg file format conversion.
Microsoft Windows software - convert gbr to jpg on Windows
A CAD and Gerber conversion software
Convert from gbr file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned gbr to jpg. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A gerber viewer and converter