I was trying to install the duplicate Bookmark remover for the Firefox but for some reasons, was not able to install it. That apart, the point is that I was trying to get a program to do this for me rather than a plugin. So, after some search, finally I found here. This is a ruby script. The script requires ruby gems-json for doing this.
The idea is very simple. Export the bookmarks in json format.
Run the script with ruby on your bookmarks. This will create a new file.
Use the restore feature of the bookmarks to restore the newly created bookmarks file, which ofcourse should not have any duplicates. 🙂
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