Firefox Ultimate Optimizer

Firefox is everyone’s favourite browser! I love the tabbing feature. I can open as many tabs as I want. The only thing I don’t like about Firefox is its memory hogging habit. My Firefox eats about 70MB of RAM with only two or three tabs opened. Sick, isn’t it?

Would you like it, if your Firefox memory usage becomes to only 100-200K? No, I’m certainly not joking! It’s seems like a miracle, but I have no idea how Firefox Ultimate Optimizer drastically reduces the browser’s craving for memory and CPU. This little app doesn’t have any configuration options and sits in your system tray all the time.

Once you launch this app, you can open your Task Manager and see the difference. My 70MB of CPU consumption was reduced to about 400K! It is available in three languages, English, Spanish and French.


Firefox Ultimate Optimizer


Firefox Ultimate Optimizer

What I’m really puzzled about is how can this app reduce the CPU consumption up to this extent? Even Task Manager verifies the reduction! If you do know about this app’s trick, do let me know.

Minimum Requirements

  • Operating System: Windows 2000/XP
  • .NET Framework 2.0


You can download Firefox Ultimate Optimizer from here. [Alternate Mirror]


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  • Great little tool harris :grin: , Downloading it right away

  • :grin: Been using this for a while, and it preforms as advertised. Simply install it, and watch as Firefox’s memory consumption immediately drops to 1-2k. Ran the program through extensive viral programs, and it appears clean. Firefox should hire the developer.

  • jontybuntu

    I was excited about this until I uploaded the file to Jotti’s Online Malware Scan (; here are the results:

    Scan taken on 10 May 2008 22:46:14 (GMT)
    A-Squared: Found Adware.Win32.FireOptimizer.c
    AntiVir: Found nothing
    ArcaVir: Found Adware.Fireoptimizer.C
    Avast: Found nothing
    AVG Antivirus: Found nothing
    BitDefender: Found nothing
    ClamAV: Found nothing
    CPsecure: Found AdWare.W32.FireOptimizer.c
    Dr.Web: Found nothing
    F-Prot Antivirus: Found nothing
    F-Secure Anti-Virus: Found not-a-virus:AdWare.Win32.FireOptimizer.c (4, 1, 400)
    Fortinet: Found nothing
    Ikarus: Found nothing
    Kaspersky Anti-Virus: Found not-a-virus:AdWare.Win32.FireOptimizer.c
    NOD32: Found nothing
    Norman Virus Control: Found W32/Agent.EYHJ
    Panda Antivirus: Found nothing
    Sophos Antivirus: Found nothing
    VirusBuster: Found nothing
    VBA32: Found AdWare.Win32.FireOptimizer.c

    I think I’ll pass on this one.

  • jontybuntu
  • @Jontybuntu:
    Every such app, that modifies configuration files is flagged as malwares, or adwares by antivirus softwares. I’m using it and have found no problem in it. It didn’t made my PC slow, or I didn’t even notice any irregular behaviour. I even monitored by bandwidth to see if there was anything suspicious in this tool that transfers our Firefox passwords etc. It’s all safe my friend.

  • jontybuntu


    Hmm…that’s a thought. Maybe I’ll try it on a virtual machine.

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  • Andrey

    Firefox uses so much ram to cache previously visited pages in case you need to revisit them.
    You can use browser.sessionhistory.max_entries to manually adjust this value without any tools ( type about:config in URL box ).
    This tool most probably does nothing except setting max_entries to zero.

    PS. After setting this value from 50 to 30, I was able to lower RAM usage from 300 o 70, which is quite conforming. Without anything sitting in systray!

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  • The program probably just runs a process named “firefox.exe” that hides the real firefox process or runs it under a different name because the scrollbar in the after screenshot is smaller than the scrollbar in the before screenshot (which indicates there are more processes running after than before). There’s no good reason, but a lot of bad reasons, to do something like that *cough*trojan*cough*.

  • yannlh

    You may want to try this tool as well, called Minimem: It does the same but more:
    – Can optimize other apps too
    – Smaller footprint though it does more
    – User-defined frequency of memory reduction
    – … and it’s not referenced as adware by Kaspersky!
    I use it on my old computer and it works like a charm with Firefox and a few more apps.
    Also, they explain on the site how it works: it removes unused memory pages from the RAM of your computer, at regular intervals.

  • joe

    just so you guys know, it’s not actually reducing the RAM usage of firefox, its just dumping them on a portion of your harddrive…

    it cheats…

    if you don’t believe me, go and google about it

  • Sho

    I’m using firefox as well, but i have doubts in that Firefox Ultimate Optimizer also.
    Now,I don’t use task manager but Sysinternals “process explorer” wich is more thorough
    In first picture you can see firefox running with some page opened ( )and memory consumption is ~45 MB
    in second picture ( )Firefox Ultimate Optimizer is running as well but there is same memory consumption and now Firefox Ultimate Optimizer is eating aditional 16 MB

    Firefox Ultimate Optimizer, really ???

  • nice info.. thanks for share

  • nice info thanks for share