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TransportBug shows all unsecured HTTP requests for debugging SSL websites. If there are any resources on the page such as images or Javascript files that are requested over unsecured HTTP (instead of HTTPS), the browser will not show the "secured" icon and will inform the user that the connection to the website is only partially secured. TransportBug lists these unsecured resources, enabling web developers to quickly find and fix those.

Sometimes unsecured resources can be found by searching the page's HTML source, but often there are background images and external fonts buried deep in CSS files, which is where TransportBug can save a lot of time.

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