In 12.04, can the image format for Screenshot be jpeg? I change the file name to save to to be ended with ".jpg", but Gnome image viewer seems not be able to open it saying
Error interpreting JPEG image file (Not a JPEG file: starts with 0x89 0x50)
One example image is here Is it a true jpeg image file?
Thanks!
21 Answer
The file you are linking at is a PNG image, true. I understood it via the file command.
There doesn't seem to be an option at the default gnome-screenshot tool for saving as JPEG format, but there is at Shutter, which can be easily installed via the Ubuntu Software Center:
