Does it really work? Rated 3 out of 5 stars

I'm not sure if it really shows correct RAM information. I'm not sure if simply restarting Firefox is a good solution (I mean I could do it by myself - actually I already installed an addon with a restart button)... It is not a "Memory restart" it is a "Firefox restart with some info about memory".

Good initiative, but there's a lot work to do

Rated 3 out of 5 stars

This would be a great add-on if it actually showed the correct number, but it is ALWAYS wrong. Works fine as a restart, but what's the point if it's inaccurate? Too bad it's probably never going to be updated again, sigh...

The extension takes the memory numbers from the Firefox API. See about:memory.

Rated 3 out of 5 stars

Task Manager says 495MB, but Memory Restart says 578MB

Rated 5 out of 5 stars

works fine, does what it is supposed to do

working with FF 43.0.4 Rated 5 out of 5 stars

I re-downloaded this tonite and it's working with FF 43.0.4

This appears to be no longer working in FF 43 Rated 1 out of 5 stars

And the fact it hasn't been updated in almost 2 years tells me this is abandoned.

The fact the official site doesn't appear to reference this either makes me suspect.

Rated 4 out of 5 stars

I get this error in browser console from time to time:
TypeError: strings.getString is not a function memoryrestart.js:89:22

which refers to this line:
var tooltipText = strings.getString("extensions.memoryrestart.tooltip.high");

This user has a previous review of this add-on.

Very good for people with too many tabs Rated 5 out of 5 stars

Very good..

Very useful Rated 4 out of 5 stars

As one that usually has a lot of tabs open (with multiple tab rows enabled by TabMixPlus, thank God), ending up using over 1GB ram, this is very helpful. '

However, under FF ver. 41.1 it no longer shows the ram amount in the status bar.

Broken in FF 40+ ? Rated 2 out of 5 stars

Broken? It used to somewhat work, but now the displayed memory amount "freezes" within a few minutes. If "auto-clear" memory is working, impossible to tell.

Rated 4 out of 5 stars

This is a very useful plugin. It allows me to mouse-over the green restart button on toolbar and see how much memory Firefox is using and restart it quickly and reduce memory. Many thanks.

The memory measurement is a little high compared to Task Manager.

Crahed on Take-Off Rated 2 out of 5 stars

I installed, pressed Restart Firefox... well I think you can guess what happened. The whole point is to use this to avoid crashes. The first thing it did was crash the browser!LOL!! Great job, guys.

Good for heavy duty Firefox users Rated 5 out of 5 stars

Sometime Firefox RAM is just way to high and you need to restart before it crashes. I have several dozen add-ons active in Firefox, so Firefox is bound to get memory leaks from unexpected interactions of your add-ons. Even if you don't use many add-ons just try scrolling through,, or Google image search will chew up RAM into the Gigabytes and most likely crash before you get to the end of a huge timeline. These "infinite" pages cause more and more RAM to get locked up in Firefox, so Firefox and other apps performance tends to suffer especially on machines with 2GB RAM or lower. I find that if I let it get anywhere nears 1.5GB Firefox will crash. I think it is probably when Virtual Memory size goes over 2GB that seem to be the problem. This add on lets you see how big (approximately) your "in memory usage" (RAM) has reached. If you see it getting closer to the point of crashing (may vary but you will figure it out what your threshold value is) you can just click the memory usage value (Ticker in bottom right corner of add-on bar) and do a restart. I also have set "Don't load tabs until selected" so restart will take me back to around 300MB RAM use.

Some reviews indicate that restart is occurring unexpectedly, so just to clarify the "Memory Restart Preferences", I set "Firefox memory threshold" to "1500". That setting is when the color changes, and when a auto-restart will occur. When you first install don't use the auto restart just get familiar with how much RAM Firefox is sucking up and tune the threshold for yourself. When you figure out what value you want to use you can use certain web pages to trigger a prompt when a shutdown has been trigger in Firefox so you can tell the difference to a crash. To do that, find a site that makes an alert - when you close your browser. For example, has a "Confirm navigate away" option. Most posting/web mail editors will do this as well by default. Keep that page open and use Firefox for a few days, so you can see when an auto restart is triggered as will pop up when Firefox tries to shutdown. This can be useful if your in them middle of writing something long and you have not saved it and need to abort the restart for a few minutes to cleanup.

If you use Firefox heavily and you notice it using huge amount of RAM and want to do restarts before it crashes this is a useful add-on to help you.

ps. Noticed "[13:56:16.969] TypeError: strings.getString is not a function @ chrome://memoryrestart/content/memoryrestart.js:128" occurring 2 per minute on console log - reported it to developer

Update Nov 2015:
I am using tab groups, "tab group helper" add on , and "Don't load tabs until selected" setting, so most of the tabs are out of sight but you still take a memory hit. Firefox runs better if you don't use too many inactive tabs. For example, having 400 inactive tabs will give you a gigabyte of memory in use on start up . This add on is helpful to keep aware of what memory is in use.

This user has a previous review of this add-on.

Please add check for firefox IDLE before restarting Rated 4 out of 5 stars

This addon is extremely useful for automatically restarting firefox for me when the ram gets out of hand. The only problem I've encountered is that sometimes firefox restarts while I'm using it! This can be easily avoided by checking that it has been idle for at least a few minutes before initiating a restart.

Otherwise, this is really great software. Thanks so much.

Refresh not working correctly Rated 2 out of 5 stars

Memory usage refresh not working correctly in FF34. The button stop updating memory usage after some time. I have a green button with 877Mb usage in one FF window. I have a red button with 1129Mb memory usage in new window when I opening it. Two windows, two different values, one firefox...
This is a bug.
Refresh interval = 60 sec.

Best Firefox add on ever! Rated 5 out of 5 stars

My computers only have two to three GB of RAM. This is the perfect solution to Firefox RAM buildup when multiple windows are left open and you don't have a late model computer with six or eight GB of RAM! I wish this one came with initial Firefox installs!

Rated 5 out of 5 stars

Thanks very good add-on to know when you restart Firefox

Nice but... Rated 2 out of 5 stars

This add-on miserably failed to re-launch Firefox again after clicking on its icon. the firefox,exe still there but the GUI not showing up. tested when firefox.exe was using 1GB of memory.

Rated 5 out of 5 stars

Decisive tool.
The mechanism ought to be a built in function of Firefox!!

It is nice memory-management, which can be crucial for all applications running on your desktop when one does a lot with the pc and when there is cumulative leaking of memory. Must have..! Very important.

Wonderfull! Rated 5 out of 5 stars

Extremely useful if your a multi-tasker with 10 + tabs going. or more. (I research a lot of things and read the pages one by one.) so having this addon auto restart after FF uses up so many mega bites is great, no more browser lock ups :)

Update: If your multitasking with 10 tabs or more might want to shut of the auto restart option as it will be closing your FF every few mins lol.