What are HTML Tags?

HTML tags are used to mark-up HTML elements
HTML tags are surrounded by the two characters <>
The surrounding characters are called angle brackets
HTML tags normally come in pairs like and
The first tag in a pair is the start tag, the second tag is the end tag
The text between the start and end tags is the element content
HTML tags are not case sensitive, means the same as

HTM or HTML Extension?

Whenever you save an HTML file, you can use either the .htm or the .html extension.

What is an HTML File

HTML stands for Hyper Text Markup Language
An HTML file is a text file containing small markup tags
The markup tags tell the Web browser how to display the page
An HTML file must have an htm or html file extension
An HTML file can be created using a simple text editor