Can anyone recommend a software tool that will go through all bookmarks stored in Firefox and determine if any HTTP bookmarks can be replaced with HTTPS equivalents?
The software can be a Firefox extension, a separate tool (for Windows), or even a web-app. It can automatically change the qualifying bookmarks, or just provide a list of which ones can be changed.
It can have a GUI, or be a command-line tool.
Recommendations can be for gratis (free of charge) or commercial software.