How many HTML tags are there in your web page? How many opened and closed tags? If you’re curious to get that information, you can use a handy tool called DivCounter. Using this tool you can scan a web page to get the number of opened and closed data.
Not all HTML tags are scanned by default, you can add more tags to scan. Just enter the tags (separate by commas) and this tool will do the work. If you have unclosed tags, you probably want to fix it. But remember, not all tags should have closing tags e.g.
br. I think it’s a good tool to learn about HTML.