This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How do I get rid of the ad/banner for GCLI developers tools that constantly pops up every time I reopen my Google/Firefox browser ?

  • 1 jibu
  • 1 ana tatizo hili
  • 2 views
  • Last reply by cor-el

more options

This keeps telling me about something I don't want, will never want, as I'm not a web developer or whatever, and it just is so annoying that this pop-up keeps on appearing - something to do with "HACKS" for Firefox, whatever that may be - I 've presumed it isn't an actual hack, but I try to avoid the thing anyway - please help me banish it ....

This keeps telling me about something I don't want, will never want, as I'm not a web developer or whatever, and it just is so annoying that this pop-up keeps on appearing - something to do with "HACKS" for Firefox, whatever that may be - I 've presumed it isn't an actual hack, but I try to avoid the thing anyway - please help me banish it ....

All Replies (1)

more options

Do you mean that this toolbar open each time you start Firefox even when you use its close X to close the toolbar?

This pref set whether the toolbar shows or is hidden:

  • devtools.toolbar.visible

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

You can check for problems with preferences, see:


Otherwise please attach a screenshot of what you see.

  • Use a compressed image type like PNG or JPG to save the screenshot
  • Make sure that you do not exceed the maximum size of 1 MB