How to find which element breaks HTTPS on a webpage?

Question

Is there a simple way, maybe through a firefox plugin or something, to be able to tell which element on a webpage is breaking the HTTPS connection?

I've searched the source for any "http" and did not find any. I am thinking the root of the problem lies in a javascript file somewhere, but I was hoping to narrow it down easier than going line by line through all the javascript files.

Any simple solution or suggestions?

Answer 1

I don't know about firefox, but Google Chrome shows all insecure content sources in console.

For example:

The page at https://mail.google.com/mail/u/0/?shva=1#inbox displayed insecure content from http://example.com.

Etc.