What is HTML?
HTML stands for Hyper Text Markup Language.
Don't be intimidated by the fancy-sounding name, HTML is just how you tell a browser to do things like make text bold, show an image, and create a link.
Every web page is made of HTML. In fact, you can see the HTML for this page. If you're in a desktop browser, right-click anywhere on the page and select View Page Source.
Examples:
<b>bold text example</b>
is turned into bold text example.
<img height=100 src="/images/grey-profile-photo2.jpeg" />
is turned into my profile photo with a height of 100 pixels.
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<a href="https://codeqna.com">Code Q&A Link!</a>
is turned into a link Code Q&A Link!
There are tons of great resources to learn HTML, checkout W3 Schools HTML tutorial.