A notification popped up. It was the red notification icon, but it was pixelated, low-res.

However, interpreting this as a user’s technical or troubleshooting need, I will assume you want an article explaining , why you would do that, the role of HTTPS in that process, and the limitations you will face.

This article explains what this command does, how to use it, and what you can learn from exploring Facebook's source code. What is "view-source"?

Can You Really “View Source” on Facebook? (And What Actually Works)