Change text case

Change the case of a text or generate identifiers in several common conventions. Check the result whenever accents, punctuation or proper names matter.

Nine modes are available: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. The modes meant for code remove accents and punctuation, and characters from non-Latin scripts may disappear. Upper and lower case follow the Unicode rules available in the browser. Title Case capitalises every word, including short words such as “and” or “of”, so it does not follow every editorial style guide. An automatic conversion does not always recognise acronyms or proper names. The right case depends on the context. Capitals can harmonise a label, but a whole paragraph in capitals is usually harder to read. Sentence case suits ordinary text; Title Case should be reviewed against the typographic conventions of the language. For programming identifiers, camelCase and PascalCase join words without a separator, while snake_case and kebab-case use an underscore and a hyphen respectively. CONSTANT_CASE gives upper-case words separated by underscores. These conventions are not interchangeable in every language and system: an identifier used in code must follow the rules of its environment. Because the code modes remove accents and punctuation, two different expressions can become identical after conversion, and characters from other writing systems can be lost. So do not convert names of people, brands, official references or multilingual content without checking. For batch work, first test a few examples containing apostrophes, hyphens, digits and accented characters. Finally, make sure the result keeps the meaning and readability you want: the tool changes the form of the text, not the quality of the writing. If the result is to become a variable name, also check that it does not start with a character the language forbids and does not clash with a reserved word. Case conversion prepares the shape of an identifier but does not validate its syntax in a software project.