Provisionally to remove data like:

  • cache
  • cookies
  • ServiceWorkers
  • storage

I remove the container and create it again, then I associate the pages of interest, the process is quite laborious.

I admit that there are rare times that I needed to clear the cache of something, but as I access ecommercers via containers, some websites sometimes change something and conflict with the cache or previous data, simply bugs from the developers, so I feel obliged to clear the Dice.

I would like to know if it is possible to clean the data in a container more efficiently, without having to remove it.

  • Can you elaborate on this: "some websites sometimes change something and conflict with the cache or previous data, simply bugs from the developers, so I feel obliged to clear the Dice"? Containers is developed by Mozilla, so I'd be very surprised if it interfered with normal, proper caching. More info about your use-case might help folks engage with your question.
    – Tom
    May 4, 2021 at 1:55
  • You should also consider filing a UX issue with the project: github.com/mozilla/multi-account-containers/issues
    – Tom
    May 4, 2021 at 1:57
  • @Tom I didn't say anything about conflicting the cache of the container with another container or outside the container. I use a container for web development and other separate containers for normal navigation such as: "social networks" and "online shopping". The container that I want to clean the data on (sometimes, not always) is the container that I use for web development. But regardless of my goal what I want is to clear the cache and data only from a specific container. May 4, 2021 at 2:19
  • So far what works for me is deleting a container and creating it again, but this is a bit more work. Perhaps the only way is for me to develop an addon so that it can control containers and data (but it will depend on the webextension API, which is something exclusive to Firefox), but that is already a matter for StackOverflow and not for SuperUser. May 4, 2021 at 2:22

2 Answers 2


This is the subject of a long-running issue report starting from 2017:
Reset cache/cookies of containers without deleting them #303

It would be great to have an option to delete a container's data (cache/cookies/...) without recreating the container.

The last entry in the post dates from Apr 17, 2021, but to this date the issue was not assigned to any developer, nor has any developer participated in the discussion, nor has any workaround been suggested.

I do not believe that a solution exists for your question that is specific to one container and does not affect all the containers.


Unfortunately, I have a too new account to comment on the question so I have to use answer. There are several add-ons that you can get which should sort you out:

  1. Disposable containers
  2. Cookiebro
  • Thanks for your comment! But temporary containers are different from having non-temporary containers that you simply want to clear cookies etc. In relation to Cookiebro, Cookie autodelete also has a feature (experimental still, I think) for deleting cookies of the containers. I was hoping there'd be a non-addon way to do it, but as per harrymc's answer, maybe you're right, an addon will be the only solution
    – flen
    May 6, 2021 at 5:03
  • 2
    Actually, this addon here seems perfect: addons.mozilla.org/en-US/firefox/addon/cookie-quick-manager it let's you see which cookies are in which containers and delete them (it's also recommended by Mozilla and has its source code on github). The only problem is that it's too focused on cookies; cache is totally ignored and you can't visualize localStorage like you can cookies
    – flen
    May 6, 2021 at 5:17
  • Sorry I couldn't be of more help, but your issue is very specific. Maybe you could make a feature request on FF's or Cookie Quick Manager's Git page? I'm sure there are others out there that have the same needs.
    – telometto
    May 6, 2021 at 6:42
  • harrymc's answer already links to a feature request:)
    – flen
    May 7, 2021 at 2:56
  • @flen's linked add-on fixed my issue Apr 13, 2022 at 9:49

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