Regex Tester & Validator
Test, validate and match regular expressions
Test, validate and match regular expressions
This regex matches HTML elements with uppercase tag names (like `<DIV>` or `<H1>`). It captures both the tag name and the content between opening and closing tags. The backreference `\1` ensures the closing tag matches the opening tag name. Useful for parsing legacy HTML that uses uppercase tags or for specific HTML extraction tasks in web scraping or content processing.