I've never posted a review before for a Firefox add-on, but this one is so elegantly implemented (and so sorely needed) that I felt compelled to do so.

This add-on is a simple solution to a vexing problem of how to force a bookmark to open in a specified container every time. Kudos to the developer!

If it's not entirely clear from the add-on description, once you've installed this add-on, you can replace any Firefox bookmark with the ext+container command syntax and that bookmark will always open in the specified container automatically. For example, if you have a bookmark to www.google.com that you want always to open in your Google container, first make sure you've created a container named Google, then right-click on your bookmark, select Properties, and change the location from https://www.google.com/ to ext+container:name=Google&url=https://www.google.com/

One note to other users: If your container's name has any spaces or other special characters in it, you have to urlencode the special character in the command (like replacing spaces with %20). For example, if you want your bookmark for www.bigbank.com to open in your My Banks container, the bookmark would be ext+container:name=My%20Banks&url=https://www.bigbank.com/