TOOL · 17.07.2026

Repurposing Caps Lock key to change case

capslock key on a grey background

The Caps Lock key is a legacy annoyance, constantly hit by mistake. When case errors occur, retyping breaks focus because Windows lacks a native shortcut to correct them, a baffling omission. Caps-Changer solves this by repurposing the Caps Lock key to instantly format selected text in-place.

Why use it?

  • Document Titles: You draft a heading in regular case, but your style guide requires Title Case. Highlighting and applying the shortcut fixes it instantly, eliminating the need to delete and retype each word’s first letter.
  • Data Formatting: Pasting poorly formatted text from emails or web forms often introduces ALL CAPS names or lowercase addresses. Caps-Changer standardizes these messy entries in a keystroke without manual editing.

How to use it

Run the script and highlight the target text.

  • Press CapsLock alone to open a visual menu that show you what to do.
  • Press CapsLock + U (UPPERCASE)
  • Press CapsLock + L (lowercase)
  • Press CapsLock + T (Title Case)
  • Press CapsLock + S (Sentence case)
  • Press CapsLock + r (Reverse case)

Bonus: CapsLock as alternate key

Use CapsLock as another key when no text is selected. Choose between Esc, Enter, Backspace or Delete. Making your caps lock key a more accesible option.

Feedback

Ideas to improve the script are welcome.

Get it on GitHub: https://github.com/kennethaar/Caps-Changer

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