Portable Firefox on USB Drive

Portable Firefox is a fully functional package of Firefox web browser optimized for use on a USB pen drive. It has some specially-selected optimizations to make firefox web browser perform faster and extend the life of your USB drive as well as a specialized launcher that will allow most of your favorite firefox extensions to work as you switch computers.

It will also work from a CDRW drive (in packet mode), ZIP drives, external hard drives, some MP3 players, flash RAM cards and more (Note: It will not run from read-only media like a CD-R). This is an unofficial package (Windows-only for now). It is an official build, but has been modified and a specialized launcher added to make extensions portable. No warranty is expressed or implied.

Latest version release:
Portable Firefox 12
Stable Version
Download Portable Firefox 12 (17Mb download)


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  1. Allen Freddy says:

    my flash drive has reduced in its capacity from 1Gb to 245Mb after i formatted the drive is there any thing that i can do to fix the problem

  2. Darren says:

    Try reformatting it using NTFS.

  3. bogdan says:

    hi, my flash card have some problems, because the format of my flash is raw, and I can not format my flash card, what I must to do?

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