I am using GIMP v.2.8.16 to combine several figures from different file formats into a single JPEG image. I'm able to accomplish this and save as JPEG, and open it on my computer perfectly fine, but when I go to upload it to a website which requires .jpg format files the file is not recognized as a jpeg. I've had this issue multiple times now where the .jpg exported by GIMP is not recognized by other programs.
Just to test that it was related to GIMP, I combined the same figures using LibreOffice Impress and saved as a JPEG, and this file was able to be uploaded with no problems.
Has anyone else experienced this issue and/or come up with a solution?