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Swaps the case of every character: capitals become lowercase and lowercase becomes capital. The one-step fix for a line typed with Caps Lock left on.
Input
hELLO tHEREOutput
Hello ThereThe Caps Lock rescue
Text typed with Caps Lock on while using Shift comes out exactly inverted: "hELLO tHERE" instead of "Hello There". Inverse case restores it perfectly, because the mistake itself was a clean inversion.
When it will not help
If the text is uniformly uppercase rather than inverted, this tool just makes it uniformly lowercase. Sentence case is the better repair in that situation.
Frequently Asked Questions
Can I run it twice to get back where I started?
Yes. Inversion is its own reverse, so applying it a second time returns the original text exactly.