firefox-esr(1) a Web browser for X11 derived from the Mozilla browser


firefox-esr [OPTIONS] [URL]

/usr/lib/firefox-esr/firefox-esr [OPTIONS] [URL]


Firefox ESR is an open-source web browser, designed for standards compliance, performance and portability.


If there is an Firefox ESR browser already running, firefox-esr will arrange for it to create a new browser window; otherwise it will start a new instance.


A summary of the options supported by firefox-esr is included below.

X11 options

X display to use
Make X calls synchronous
Don't use X shared memory extension
Make all warnings fatal

Mozilla options

-h, -help
Show summary of options.
-v, -version
Print Firefox ESR version.
-P [profile]
Start with profile. When no profile is given, displays the Profile Manager. May require -no-remote, see below.
Start with migration wizard. May require -no-remote, see below.
Start with profile manager. May require -no-remote, see below.
Don't connect to a running Firefox ESR instance. This option can be necessary in conjunction to several of the options above, that won't have any effect when an Firefox ESR instance is running unless -no-remote is used at the same time.
-UILocale locale
Start with locale resources as User Interface locale. By default, it is guessed from environment and available locales for Firefox ESR.
Starts Firefox ESR in safe mode, i.e. disabling all extensions and showing a bit more debugging messages.
Start with Javascript Console
-new-window URL
Open URL in a new window in an already running Firefox ESR process.
-new-tab URL
Open URL in a new tab in an already running Firefox ESR process.
-chrome url
Load the specified chrome.


MOZILLA_DISABLE_PLUGINS - when set, totally disables loading browser plugins (the ones that appear at the about:plugins url)


/usr/bin/firefox-esr - symbolic link to /usr/lib/firefox-esr/firefox-esr.

/usr/lib/firefox-esr/firefox-esr - Firefox ESR executable.

/usr/lib/firefox-esr/firefox-bin - Legacy executable.


To report a bug, please visit and/or report bugs to the Debian Bug Tracking System, as usual.


The Mozilla Organization