Board Thread:Administrator's noticeboard/@comment-1694864-20121130041943/@comment-1694864-20121201013439

1. Depending on the image, GIF can be smaller compared to PNG (File:Homeguard.gif only takes up 982 bytes). But for most item icons that use more than 256 colours, this compromises quality.

Note: It is not possible to rename files into different format. MediaWiki detects that the format of the file being moved does not match the extension. It's not possible to rename it without an extension either.

I agree, images that get used should use absolute time (S1, S2, V0.0.0.0) rather than relative time (old, new, current). Old doesn't reflect how old.