Any program that has access to the Firefox profile folder can open the places.sqlite database file and scan its content to inspect the bookmarks and the history accessed via this profile. You would only have to know how to access SQLite database files. This goes for any personal data created/saved by a specific program.

Thanks for the quick response.

So this would include all the data that is inputted into the properties of each bookmark like Name:, Location,: Tags:, Keyword: and Description:?

Yes.

You can use the SQLite Manager extension in Firefox to inspect SQLite database files.

• SQLite Manager: https://addons.mozilla.org/firefox/addon/sqlite-manager/

Firefox also creates a daily JSON backup in the bookmarkbackups folder in the Firefox profile folder that stores this bookmark data as well.

• http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox