Mobile browsers do not have a simple right-click menu, but you can still view the source code using the URL prefix method. On Android (Chrome or Edge) Open the mobile browser and go to Facebook. Tap the address bar. Move your cursor to the very beginning of the link. Type view-source: before the https . Tap or Enter . On iOS (Safari)
Clean, logical, indented code that mirrors the layout you see. What you get: A dense, unformatted wall of text.
Aspiring software engineers study Facebook's source code to understand how enterprise-level applications manage asset loading, security, and performance optimizations. A Note on Security and Privacy
Understanding the underlying code of Facebook can be useful for developers debugging their integrations or curious users looking for specific "hidden" data, like a profile ID How to View Facebook's Source Code
Elias realized what he was looking at. It was the "View Source" of the website’s own memory. It wasn't just the code to build the site; it was a debug mode for the site's history.