Convert text to InVeRsE CaSe

This tool converts your text to InVeRsE CaSe – that is, it swaps the case of each letter (uppercase becomes lowercase and vice versa). In addition to the basic conversion, this tool offers robust and flexible options: • Option 1: Convert the entire text. • Option 2: Convert only words that contain specified substring(s). • Option 3: Convert the entire text except words containing specified substring(s). • Option 4: Display the converted text using a custom format (using {text} as a placeholder). Simply enter your text, set any desired options, and click the Process button.

Input

Output

Conversion Options:

Convert Entire Text
Converts every letter in the text to its opposite case.

Convert Only Words Matching Specified Substrings
Converts only those words that contain the specified substring(s) (comma‑separated, case‑insensitive). Other words remain unchanged.

Convert Except Words Containing Specified Substrings
Converts every letter in the text except in words that contain the specified substring(s) (comma‑separated, case‑insensitive). Those words remain unchanged.

Custom Format Display
Converts the entire text to inverse case and then displays it using a custom format. Use {text} as a placeholder for the converted text.

Examples:

Convert Entire Text

Every letter in the text is converted to its opposite case.

Before:

Hello World!

After:

hELLO wORLD!

Convert Only Words Matching Specified Substrings

Only words containing the specified substring(s) are converted. For example, specifying "test" converts "Testing" but leaves "example" unchanged.

Before:

This is a Testing example.

After (specifying "test"):

This is a tESTING example.

Convert Except Words Containing Specified Substrings

Converts the entire text except for words that contain the specified substring(s). For example, excluding "keep" leaves "Keep" unchanged.

Before:

Please keep this text intact but convert the rest.

After (excluding "keep"):

pLEASE keep THIS TEXT INTACT BUT CONVERT THE REST.

Custom Format Display

Converts the entire text to inverse case and displays it with a custom format.

Before:

Hello Inverse!

After (format "Converted: {text}"):

Converted: hELLO iNVERSE!