Main differences between XML and HTML

1. XML is case-sensitive and HTML is not.
2. In HTML, if the context clearly shows where the paragraph or list key ends, you can omit the ending mark such as </p> or </li>. In XML, the end mark cannot be omitted.
3. In XML, an element with a single tag but no matching ending tag must end with one/character. In this way, the analyzer does not need to find the end mark.
4. In XML, attribute values must be placed in quotation marks. Quotation marks are usable in HTML.
5. In HTML, you can have attribute names without values. In XML, all attributes must have corresponding values.