How do I delete a cookie in Firefox Developer Edition?

(Not a good sign for this product that this question needs to be asked).

I'm using v35.0a2 (2014-11-14) on Windows.

  • Which version of FF Dev is in question? Which OS? Nov 14, 2014 at 18:16
  • This is for 35.0a2 (2014-11-14) Windows.
    – pspahn
    Nov 14, 2014 at 18:20
  • Why can't you can go to the location of the Firefox user profile and delete the cookie by hand.
    – Ramhound
    Nov 14, 2014 at 18:44
  • @Ramhound As a browser that touts itself as "a browser for developers" I find your suggestion an unacceptable solution. The Storage tab lists all the cookies for the page/domain you're on, am I not right-clicking hard enough?
    – pspahn
    Nov 14, 2014 at 19:07
  • Your also using a preview version of said "browser for developers" so you might have to cut some corners. Of course you also asked how delete a cookie.
    – Ramhound
    Nov 14, 2014 at 19:10

2 Answers 2


Aha. I knew this couldn't have been left out.

F2 to open Developer Toolbar.

Then you can use cookie list on the command line. This will list each cookie and provide a Remove button.

  • Remove button does not seem to work on Mac version :-/
    – codecowboy
    Jun 10, 2015 at 15:07

Remove button does not seem to work on Mac version :-/

  • click the "remove" button

  • new code appears on the command line

  • click the Return key on your Mac

  • and the cookie is gone

If your site has more than one cookie or you are doing this a lot because you are developing something, consider getting a plugin to reduce the number of steps to one.

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