It has come to the attention of your fellow moderators that you've been converting JPGs to PNGs. As covers are required to adhere to the same rules as screenshots, this is not acceptable - especially from a staff editor.
To doth quote from the guide: "Never convert lossy file formats such as JPG to lossless formats such as PNG. If no alternative version of the image is available or can be created in a lossless format, using the original lossy image is preferable."
You are fortunate that, like all members of PCGW, staff or not, I am merely giving you a warning over this. Continued behavior will result in a ban.
No one, not even staff or admins, are above PCGW's rules.