Is there a system-wide text manipulation app that enables you to select text and convert all letters to upper case or lower case, like a code text editor would?

  • An automator service could do this trick. It can be accessed from the contextual menu of the textboxes. Feb 9, 2015 at 16:58

5 Answers 5


You can set this up as a right click service in automator as @Matthieu Riegler suggested.

Open up Automator.app and create a “Service” with this workflow.

enter image description here

Pay close attention to the checkbox up top, “Output replaces selected test”. After the workflow is in place and saved, navigate to “System Preferences-->Keyboard.” On the left hand side select “Services”. On the right hand side you will see the Service you created, in the example its saved as “UpperCase”. Then give it a shortcut by pressing “Add Shortcut” and give it what you would like. Tested in TestWrangler and TextEdit.

Script used in Automator:

on run {input, parameters}
set upperCaseString to ¬
    (do shell script ("echo " & input & " | tr a-z A-Z;"))
return upperCaseString
end run
  • 1
    That's enough for 'English' language, but you can also add diacritical translation, like so set upperCaseString to ¬ (do shell script ("echo " & input & " | tr a-zäáà A-ZÄÁÀ;")) add an specials to your list like ä, ß and so on
    – Ruskes
    Feb 9, 2015 at 18:11

I am on Mountain Lion 10.8.5 and for all editable text I can select and right click the text and choose Transformations -> Make Upper Case.

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However, it seems this does not work in all applications. TextWrangler for example does not show this menu. All system applications (Finder, TextEdit, Mail, Calendar, etc...) do.

  • 1
    This continues to work as of 2018, e.g. in High Sierra (10.13.x)
    – myhd
    Apr 19, 2018 at 10:55

Another tool that I use is PopClip

The application can transform selected text to UPPERCASE or even Proper Case or lowercase. There are several settings for search and other context relevant actions.

I am not affiliated with the developer.

PopClip Settings

PopClip context

This is a sample based editing this answer...

PopClip in context using selected text


I had the same struggle so I create a one button app that solves this problem. It looks like this:

Screenshot of the Lowly Mac App

You'll find the Lowly app here :)


WordService will solve your problem. It's a free app from Devon Technologies that provides system-wide Services that do various text manipulations, including changing case.

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