Normally we don’t use most of the functionality offered by About: commands in Firefox but some times these commands come in very handy to tweak the browser functionality according to our needs or troubleshooting the browser malfunctioning.
Here is the complete list of Firefox About: commands along with their short descriptions
Using the About: Commands in Firefox
Using the About: commands in Firefox is quite simple. You just have to enter the command in the Firefox address bar and press enter. This is like entering the URL of any webpage to open it. For example, if I want to know more about my installed version of Firefox, I will write about: in the Firefox address bar. Pressing enter will bring me the information I want.
Just for Fun
about:mozillaShows a verse from the book of Mozilla about:robotsA robot greets the humans
General Information
about:Shows information about Firefox like version, contributors, build configuration etc. about:aboutShows the list of all the About: commands supported by that specific version of Firefox about:blankShows a blank page about:homeShows the Firefox homepage about:addonsShows the addons page about:sync-tabsShows tabs synced from other computers if tab synchronization is enabled about:accountsShows the Sync login screen to login to Mozilla to sync browser data about:sync-logsShows the sync logs about:creditsShows credits about:licenseShows the Mozilla Public License about:rightsShows licensing and rights information about:logoShows the Firefox Logo
Advanced Information
about:pluginsDisplays the plugins that are currently installed in Firefox about:buildconfigShows the arguments and options used to compile the Firefox build in use about:cacheShows information about the data in the browser cache about:crashesShows details of crashes submitted by Mozilla’s crash reporter about:memoryShows detailed memory usage about:supportShows troubleshooting information about:blockedShows the page which is displayed when a malware website is encountered in Firefox
Functional About Pages
about:configShows the Firefox configuration information. You can tweak the Firefox functionality using this config page about:sessionrestoreGives the option to restore the last browsing session about:certerrorShows the error page when the SSL/TLS page is untrusted about:feedsShows the page when feeds are displayed about:neterrorShows the error page when the browser is not able to access the requested page about:permissionsShows the permissions page where you can see the permissions given by the user for each visited website including password storage information, location sharing, pop-ups allowance, offline storage etc about:compartmentsShows a list of all running JS components. Compartments are little segments of memory which is used by JavaScripts in Firefox. This command is no longer available in the latest versions of Firefox. It has been merged in about:memory page about:healthreportShows vital stats about Firefox performance about:telemetryShows the information about performance, hardware, usage and customizations collected by Telemetry. This information is submitted to Mozilla to help improve Mozilla Firefox. Telemetry is disabled by default. You can enable it from this page Which About: command do you use the most? Did I miss any command? Please share your thoughts by clicking here. Also see:
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