This little tool aims at converting 2DB textures to well-known DDS format, so that it can be modified in your favourite image editing software.
Here is a small list of them, supporting DDS format :

You must provide the source 2DB file in the upper field (you may also 'drag and drop' your file into).
The new DDS file name will update itself so you won't have to enter or select a location; unless you'd want to change destination.

Converting many files is pretty the same way as seen earlier for single files. The difference is you have to specify a BNK file first then select a folder to place brand new DDSs
('drag and drop' also available).
Converter will scan BNK file for 2DBs and convert all of them into the target folder you've given.

This task is slightly much complicated than the last one, because of some limitations.
First, you have to keep in mind that the starting 2DB file must be available to enable converting (Modding Tools limit).
Though, these limits should disappear for future versions: you will be able to generate brand new texture files with a new size.