How To View the HTML Source in Firefox

Viewing the HTML source of a web page is one of the easiest ways to learn HTML. If you see something on a website, and want to know how they did it, view the source. Or if you just like their layout, view the source. I learned a lot of HTML simply by viewing the source of web pages that I saw. It’s a great way for beginners to learn HTML.

But remember that source files can be very complicated. There will probably be a lot of CSS and script files along with the HTML, so don’t get frustrated if you can’t figure out what’s going on immediately.

Viewing the HTML source is just the first step. After that you can use tools like Chris Pederick’s Web Developer extension to look at the CSS and scripts as well as inspect specific elements of the HTML.

Difficulty: Easy

Time Required: 1 minute

Here's How:

  1. Open Firefox
  2. Navigate to the web page you would like to examine
  3. Click on the “Tools” menu in the top menubar and go to the “Web Developer” section
  4. Click on “Page Source”
    This will open a text window with the HTML source of the page you’re looking at.


  1. On most web pages you can also view the source by right-clicking on the page (not on an image) and choosing “View Page Source.”
  2. Firefox also has a keyboard shortcut for viewing the HTML source — hold down the control (Windows) or command (Mac) key and hit u — Ctrl-U/Cmd-U.

What You Need

  • Firefox