How to change extension to all types of files in a folder

Many times we may have to change the extension to a large amount of files of the same type in a folder and not being offered by the OS any option to do this we have to manually changhe the extension of any of them, or we can use third-party programs, or we can use a simple trick...

So here's how:

  1. Enter in the folder
  2. Create a new shortcut
  3. In the shortcut path write  cmd / c ren *.original extension *.new extension (for example cmd / c ren *.txt *. jpg to chante txt in jpg).
  4. Give a name at the shortcut
  5. Right click on the shortcut and enter in the tab Properties
  6. Delete the voice %windir%
  7. Double click to run the shortcut