There is currently no consensus (largely due to a lack of discussion) to standardize Commons' templates with the styles presented here. Much of our focus has been on a content-based level (e.g. internationalization), rather than on an aesthetic level. There's also no consensus about not using these templates and users have indeed started to use them. Thus, while templates do not have to conform to these styles, users may use the style templates documented below if they wish.
Currently, there are two "template style" templates. {{Mbox}}, the general message box for any namespace, and {{Cmbox}}, a message box for categories. More specialized versions may be added in the future (like one for talk pages), however, you can use {{Mbox}} for everything since it will switch styles based on namespace. The current style {{Mbox}} uses was created for the file and gallery namespaces. If you use this elsewhere (like on your userpage), keep in mind that it may change drastically in appearance at some point in the future if a new type of style template is created for that namespace.
Caution: Before removing a watermark from a copyrighted image, please read the WMF's analysis of the legal ramifications of doing so, as well as Commons' proposed policy regarding watermarks.
This image was (or all images in this article or category were) uploaded in the JPEG format. However, it contains information that could be stored more efficiently or more accurately in the PNG format or SVG format. If possible, please upload a PNG or SVG version of this image without compression artifacts, derived from a non-JPEG source or with existing artifacts removed.
This category requires frequent maintenance to avoid becoming too large. It should list very few (if any) images or pages directly, and should mainly contain sub-categories.
Media files and pages in this category should be moved to subcategories where appropriate.
This category is in the process of being merged into Category:ABC. Please do not edit this page. Any changes should be made to Category:XYZ. See its talk page for more details. If you disagree with this action, you may discuss it there.
When the merge is done, tag this category as a {{Category redirect}}