The category you deleted was Q22712574 was based on :
http://directory.fsf.org/wiki/Category/Localization/text-converters
It is notable, there are a bunch of them. See also https://en.wikipedia.org/wiki/Internationalization_and_localization
https://en.wikipedia.org/wiki/Category:Internationalization_and_localization
and the subcat https://en.wikipedia.org/wiki/Category:Software-localization_tools
would be the right one, so instead of just deleting my work with no discussion, we can replace it with Q6814255