A "String Cleaner" is a tool or software designed to remove unwanted characters, spaces, or formatting from text strings. It is commonly used in data processing to ensure that the information is clean and consistent, making it easier to analyze or store. String cleaners can handle various types of data, including user inputs, database entries, and text files. These tools often include features like trimming whitespace, removing special characters, and converting text to a specific case (e.g., uppercase or lowercase). String cleaners are useful in programming, data entry, and any situation where text data needs to be standardized for better usability and accuracy.