This shows you the raw HTML that builds the framework of the page.
What you will see:
What you will NOT see:
Why? Facebook uses client-side rendering. The source code is just the "skeleton." Your browser downloads a separate JSON file (data) and the JavaScript engine fills in the blanks.
If you visit https://web.facebook.com (the basic web version, often lighter than www.facebook.com) and view the source, here’s what you’ll notice: view sourcehttpsweb facebook
Based on your query view sourcehttpsweb facebook, you likely meant:
Example: view-source:https://www.facebook.com/login This shows you the raw HTML that builds
If you want to understand or interact with Facebook’s web interface:
Some data (like the logged-in user’s name, initial notifications, or settings) may be embedded inside <script type="application/json"> tags or JavaScript variables like window.__initialState__. What you will see: