Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Is FF consuming too much memory?

  • 1 cavab
  • 1 has this problem
  • 8 views
  • Last reply by cor-el

more options

I recently disabled Tab Mix Plus as a potential culprit in FF's ridiculous memory footprint of more than 2.5 gigs. FF was grinding to a halt over and over and crashing a lot too.

Now, even with only a handful of tabs open, and none of them even slightly content-rich, FF is still gobbling up almost 1.5 gigs. It is faster now, and not crashing yet, but this seems really high.

Is this normal for FF?

I recently disabled Tab Mix Plus as a potential culprit in FF's ridiculous memory footprint of more than 2.5 gigs. FF was grinding to a halt over and over and crashing a lot too. Now, even with only a handful of tabs open, and none of them even slightly content-rich, FF is still gobbling up almost 1.5 gigs. It is faster now, and not crashing yet, but this seems really high. Is this normal for FF?

All Replies (1)

more options

You can try to disable hardware acceleration in Firefox.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.


Create a new profile as a test to check if your current profile is causing the problem.

See "Creating a profile":

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.