ISO-8859-1
It is used as the default character set of HTML4 and also supports 256 characters. The International Standards Organization (ISO) defines the standard character sets for different alphabets/languages. It contains numbers, upper and lowercase English letters, and some special characters.
HTML Charsets
HTML charsets define character encodings used by the document. The charset attribute within the <meta> tag specifies the character encoding for the HTML document, ensuring proper interpretation of text. Common values include UTF-8 and ISO-8859-1.