Change the letter case of a block of text without rewriting it manually. Review names, acronyms and technical identifiers after conversion.
Uppercase and lowercase transformations are useful when formatting headings or cleaning copied text. Title-style capitalisation needs extra care because articles, product names and abbreviations do not always follow the same rule.
Paste a small sample first, compare the output with the original and then process the remaining text. Case conversion changes characters, not spelling, grammar or meaning.
Avoid automatically changing case in passwords, email addresses, code or other case-sensitive strings: the result may stop working.