Add-ons and extensions appear to take longer to install.Update Prompt – As updating the browser on a flash drive can be very slow, Firefox Portable asks you if you'd like to update rather than doing it automatically.No Disk Cache – The browser disk cache has been disabled to decrease disk size and the number of writes to the disk, possibly increasing disk life.Download Prompt – Firefox will ask where to save downloads.No Default Browser Check – Firefox won't check to see if it is the default browser on start up.Default Profile – A default profile exists within the Firefox directory with settings to improve portability.Launcher – Performs a number of functions including: adjustment of paths to external programs (mime types), adjustment of paths to local homepages, intelligent recreation of the component registry as you move drives, backup/restore of certain registry keys in certain instances, cleaning of folders and directories in certain instances, adjustment of some extension setting paths making non-portable extensions portable.Plugins such as Flash Player and Shockwave Player cannot be installed to Portable Firefox in the usual sense, but the plug in files can be copied from a local installation to the appropriate portable folder. This allows the user to move from computer to computer without losing application settings. Personal settings, bookmarks, and any installed extensions and themes are stored on the flash drive along with Firefox Portable. Firefox Portable's ability to delete cookies and the download history on exit is not enabled by default, as per a licensing agreement with Mozilla. The web cache and browser history were previously disabled under the release of 2.0. Modifications to reduce the number of writes to the flash drive have also been added. Differences from Mozilla Firefox įirefox Portable retains all of Mozilla Firefox's abilities such as extensions and automatic updating.

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