Edit by EricGT
If the image is just a capture of plain text such as code, then please convert it to text and forgo the screen capture.
Also, please be judicial about posting screenshots to the site as the storage is limited and if the image is deemed to be using excessive space it may be deleted.
However if you feel that it must be added, then changing the file type or reducing the size when added can save space. You can mouse over the image to see how much space it is using and delete and upload a different image if desired.