'Not available for Firefox 21.0':(– Rookie Aug 15 '13 at 9:06 You don't need SettingSanity for Firefox 21.0. Just go to Tools - Settings (Windows) or Edit - Preferences (Linux) and select the Content tab. From Firefox 4, I had to install 6 addons to restore functions (I include Classic Theme Restorer, SettingSanity, Status-4-Evar, keyword.URL Hack!, Go and Show Parent Folder) broken or removed on new releases, without counting reset about:config preferences. Visit the SettingSanity page to get the add-on. Click on the Add to Firefox button to install it. Or you can also get the add-on by going to the Tools menu of the Firefox and choose Add-ons; Once the add-on is installed, go to the Preferences menu of Firefox and choose Contents. Unmark the Enable JavaScript option to disable JavaScript.
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Compare browsersThe use of Mozilla Firefox About: commands in the Firefox Quantum browser is really very simple. We have mentioned all the Firefox about Easter egg features or you can say Firefox about commands in the single page of this article those you can use to perform operations and config tasks. Basically, the About commands are URL those are linked with the internal configuration and functionality pages of Firefox browser. To see the all About page commands of the Firefox browser you just need to type about:about command in the URL section and hit enter. The Firefox about commands settings page will open with a complete list of available About:commands. It is same as you open some website link in the address bar of the browser. For example, writing about: config in the Firefox URL bar will show all advanced configuration settings of the browser to tweak it.
If you talking about the version of the Firefox browser then we are using the latest one Firefox Quantum to perform this article.
However, most of the Mozilla Firefox commands are generally not going to used by common people but they can really prove very useful to you or developers if you want to tweak the functionality of the Firefox browser to make it works according to your requirement or troubleshooting it, in case it shows any glitches.
How To Use Hidden About Commands in Firefox
Step 1: Open your Firefox browser and type the about:about command in the URL address bar as shown in the given screenshot. This command will show all the about commands available for your Firefox browser version.
To you use any command just click on that or type about: <command type>
The command type can be anyone like to know about the Firefox plugins you will type about:plugins, to see the firefox configuration type about:conifg and so on. Please see the complete command list and their functionality below.
List of Quantum Firefox about commands & Settings
This is a list of Firefox “about” pages commands for diagnostic purposes only.
- about:about
- about:addons
- about:buildconfig
- about:cache
- about:checkerboard
- about:config
- about:crashes
- about:credits
- about:debugging
- about:devtools
- about:downloads
- about:home
- about:license
- about:logo
- about:memory
- about:mozilla
- about:networking
- about:newtab
- about:performance
- about:plugins
- about:preferences
- about:privatebrowsing
- about:profiles
- about:rights
- about:robots
- about:serviceworkers
- about:studies
- about:support
- about:sync-log
- about:telemetry
- about:url-classifier
- about:webrtc
about:about
To get the complete list of about commands
about:addons
This will take you to the add-on page of Firefox.
about:buildconfig
Shows Source, Build platform, Build tools and Configure options details of your Mozilla Firefox browser.
about:cache
Provides all information about the Network Cache Storage Service and disk cache directory location.
about:checkerboard
Checkerboard page is used to debug individual checkerboard instances for the measurement of the different page to detect checkerboarding issues. The Checkerboard is basically a 3D computer graphics rendering technique.
about:config
More than 1000+ configurations settings are available at the Firefox about page that provides a way to inspect and change Firefox preferences and settings.
about:crashes
This Firefox about command will list all the crash reports of the Firefox during the runtime; if the user has enabled the crash reporter.
about:credits
We would like to thank our contributors, whose efforts over many years have made the Firefox browser software work then you will get the complete list of all contributors to the Firefox project.
about:debugging
It will Switch to the Developer Tools debugging page, which allows you to debug add-ons, tabs and Service Workers.
about:devtools
It will show you the complete of the Firefox Developer Tools those can be used to improve and debug the web pages. Here is the list of tools:
- Inspector – Inspect and refine code to build pixel-perfect layouts.
- Console- Track CSS, JavaScript, security and network issues.
- Debugger- Powerful JavaScript debugger with support for your framework.
- Network- Monitor network requests that can slow or block your site.
- Storage- Add, modify and remove cache, cookies, databases and session data.
- Responsive Design Mode – Test sites on emulated devices in your browser.
- Visual Editing – Fine-tune animations, alignment, and padding.
- Performance – Unblock bottlenecks, streamline processes, optimize assets.
- Memory -Find memory leaks and make your applica tion zippy.
about:downloads
Displays all downloads which you have done so far within your Firefox browser.
about:home
Redirect you to the main home page of the browser.
about:license
Show all of the source code of FireFox those are available under licenses of the free and open source. A URL identifying the specific source code used to create this copy can be found on the build configuration page, and you can read instructions on how to download and build the code for yourself. It is beneficial if you want to modify the source code of the Firefox to create something of your own.
about:logo
Simply shows the Mozilla Firefox Logo (High-res).
about:memory
Shows the memory usage of the Mozilla Firefox browser and save it as a report and run the GC and CC.
about:mozilla
The Firefox about easter egg will just show a message from “The Book of Mozilla”.
about:networking
It will display all networking information and protocols those are operated on your Quantum Firefox browsers such as HTTP, Sockets, DNS, WebSockets, DNS Lookup, Logging, and RCWN stats.
about:newtab
Simply trigger a command to open a new tab in the browser.
about:performance
Do you want to know about the Memory? used by your browser and other performance details then use this easter egg of the Quantum Firefox browser which will reveal all the memory and performance information about Firefox subprocesses, add-ons, and tabs.
about:plugins
Settingsanity For Firefox Extension
Displays information about installed plugins on the Firefox…
about:preferences
Just a shortcut command to take you directly tot he preference page of the Firefox to change General, Search, Privacy & Security and Firefox Account settings. The preference normally can be accessed through Firefox menu > Options.
about:privatebrowsing
As the command name suggests it will start a new page which opens in a private window or incognito mode.
about:profiles
This Firefox about easter egg will let you manage Firefox profiles and also shows theexistingg ones.
about:rights
Shows About Your Rights to use the Mozilla Firefox Quantum browser.
about:robots
Another Firefox easter egg which is just for fun and shows a page with some notes about the robots.
about:serviceworkers
It shows all the Serviceworkers those are registered on your browser. For those don’t know about the Service worker let me tell, basically it is a script that used in the background of your browser and doesn’t need the web pages involvement or user interaction such as push notifications and background sync.
about:studies
This just provides an Update preference button that takes you to the Firefox Data collections and use part to seek your approval in order to improve the service of Firefox.
about:support
Display troubleshooting information which can also access through the Firefox menu > Help > Troubleshooting Information.
about:sync-log
Shows all the logs related to sync
about:telemetry
This page shows the information about performance, hardware, usage and customizations collected by Telemetry. This information is submitted to Mozilla to help improve Mozilla Firefox. It shows the following:
Settingsanity For Firefox Browser
- Current ping status
- General Data
- Environment Datat
- Session information
- Scaled
- Keyed Scalars
- Histograms
- Simple Measurements
about:url-classifier
It is to get an efficient and reliable classification of a web-page from the information contained in the Uniform Resource Locator (URL) only, without visiting the page itself.
about:webrtc
Information about WebRTC usage which an open framework that enables the browser for real-time communications on the web using audio and video components for example chatting applications used in the browser.