HTML Validation

There are many possible errors that can be made when marking up a page using HTML, and they're not always easy to spot. From missing or partially formed tags to nesting issues, keeping track of all the rules can be a daunting task.

That's why we have HTML Validators! These tools can help check for errors in your code and spot things such as:

Missing tags (opening or closing)
Syntax errors (missing pieces of tags or entities, other errors with tags or attributes)
Misplaced elements (elements in the wrong portion of your document or nesting errors
And many more!

Validators are very helpful, but aren't always easy to understand. Making sense of their results takes some practice.

Let's use this page to practice using validation tools &mdash then you can use them to check your own work!