Diverse
Browser URI info
about: URIs that are known to be defined for specific purposes
| about:blank | Returns a blank HTML document with the media type text/html and character encoding UTF-8. This is widely used to load blank pages into browsing contexts, such as iframes within HTML, which may then be modified by scripts. |
| about:legacy-compat | A reserved, though unresolvable, URI defined within HTML5 intended for use in the DOCTYPE designed for compatibility with some legacy authoring tools, such as XSLT, which may not be capable of outputting the more common, shorter alternative that lacks both the PUBLIC and SYSTEM identifiers. <!DOCTYPE html SYSTEM "about:legacy-compat">. |
| about:srcdoc | A reserved, though unresolvable, URI defined within HTML5 intended to be the URI navigated to within iframes whose content comes from the srcdoc attribute. |
| about:invalid | A reserved, though unresolvable, URI defined within CSS Values and Units module, intended as a non-existent document with a generic error condition for use where a URI is necessary, but where no actual resource is desired. |
Common about: URIs
about:about:about
about:blank
about:plugins
about:cache
Google Chrome URIs
Google Chrome-specific about: URIs
| about:cache | Shows the content of the cache |
| about:crash | Crashes the current rendering process. (This causes the “Aw, snap!” crash notification page to be displayed.) |
| about:credits | Displays the list of free and open source software used in the browser, and their associated licences. |
| about:dns | Displays the DNS records |
| about:flags | See about:labs |
| about:gpu | Displays information about WebGL and hardware accelerated graphics. |
| about:histograms | Displays histograms |
| about:inducebrowsercrashforrealz | Crashes the Google Chrome browser. This is designed for developers to test what happens when the Google Chrome browser crashes. |
| about:internets | On particular versions of Windows, displays a page entitled “Don't Clog the Tubes!” which renders a page with an animation of the Microsoft Windows “3D Pipes” screensaver. Does not work on Windows Vista due to the pipes screen saver no longer being supported for releases after the 2.0.169.1 release. |
| about:kill | Same as about:crash, but with a violet background color and the message “He's Dead, Jim!” Occurs when the OS runs out of memory or the browser is killed by an external cause, such as the OS shutting down. |
| about:labs | Displays a page for testing features. Moved to about:flags in Chrome Dev channel 8.0.552.11 |
| about:memory | Displays the process manager |
| about:net-internals | Provides an interface for monitoring the network usage and performance statistics |
| about:plugins | Shows installed plug-ins |
| about:shorthang | Hangs the tab's process, making it become unresponsive. This is designed for testing the hanging protection |
| about:stats | Displays statistics about processes. At the top of the page, it states “Shhh! This page is secret!” |
| about:version | Displays version information, same as about: |
Google Chrome URIs (2)
| chrome://about |
| chrome://accessibility |
| chrome://appcache-internals |
| chrome://apps |
| chrome://blob-internals |
| chrome://bluetooth-internals |
| chrome://bookmarks |
| chrome://cache |
| chrome://chrome |
| chrome://chrome-urls |
| chrome://components |
| chrome://conflicts |
| chrome://crashes |
| chrome://credits |
| chrome://device-log |
| chrome://devices |
| chrome://dino |
| chrome://discards |
| chrome://dns |
| chrome://downloads |
| chrome://extensions |
| chrome://flags |
| chrome://flash |
| chrome://gcm-internals |
| chrome://gpu |
| chrome://help |
| chrome://histograms |
| chrome://history |
| chrome://indexeddb-internals |
| chrome://inspect |
| chrome://invalidations |
| chrome://local-state |
| chrome://media-internals |
| chrome://nacl |
| chrome://net-export |
| chrome://net-internals |
| chrome://network-error |
| chrome://network-errors |
| chrome://newtab |
| chrome://ntp-tiles-internals |
| chrome://omnibox |
| chrome://password-manager-internals |
| chrome://policy |
| chrome://predictors |
| chrome://print |
| chrome://profiler |
| chrome://quota-internals |
| chrome://serviceworker-internals |
| chrome://settings |
| chrome://settings/clearBrowserData |
| chrome://settings/help |
| chrome://signin-internals |
| chrome://site-engagement |
| chrome://suggestions |
| chrome://supervised-user-internals |
| chrome://sync-internals |
| chrome://system |
| chrome://taskscheduler-internals |
| chrome://terms |
| chrome://thumbnails |
| chrome://tracing |
| chrome://translate-internals |
| chrome://usb-internals |
| chrome://user-actions |
| chrome://version |
| chrome://view-http-cache |
| chrome://whats-new |
| chrome://webrtc-internals |
| chrome://webrtc-logs |
For Debug
The following pages are for debugging purposes only. They crash or hang the renderer.
| chrome://badcastcrash |
| chrome://crash |
| chrome://crashdump |
| chrome://kill |
| chrome://hang |
| chrome://shorthang |
| chrome://gpuclean |
| chrome://gpucrash |
| chrome://gpuhang |
| chrome://memory-exhaust |
| chrome://ppapiflashcrash |
| chrome://ppapiflashhang |
| chrome://quit |
| chrome://restart |
Info about Google Chrome URIs
Also, please note that all of the commands mentioned above can also be called using Google Chrome about command, which redirects to chrome://.
For example, both of the following are exactly the same.
about:history
chrome://history
Firefox URIs
| about:about | Provides an overview of all about: pages available for your current Firefox version |
| about:addons | Add-ons Manager |
| about:blank | Shows a blank page |
| about:blocked | Shows the malware protection page used when the browser identifies a page as not safe for viewing |
| about:buildconfig | Displays the configuration and platform used to build Firefox |
| about:cache | Displays information about the memory, disk, and appcache |
| about:checkerboard | Switches to the checkerboarding measurement page, which allows to detect checkerboarding issues |
| about:config | Provides a way to inspect and change Firefox preferences and settings |
| about:crashes | Lists all crashes, which happened during the runtime of Firefox (in case the user enabled the crash reporter) |
| about:credits | Lists all contributors to the Firefox project |
| about:debugging | Switches to the Developer Tools debugging page, which allows you to debug add-ons, tabs and Service Workers |
| about:devtools | Summarizes the developer tools and provides links to documentation for each tool |
| about:downloads | Displays all downloads done within Firefox |
| about:home | Start page of Firefox when opening a new window |
| about:license | Displays licensing information |
| about:logo | Firefox logo |
| about:memory | Provides a way to display memory usage, save it as report and run the GC and CC |
| about:mozilla | Special page showing a message from "The Book of Mozilla" |
| about:neterror | Shows the error page used when the browser could not access the requested pat |
| about:networking | Displays networking information |
| about:newtab | Start page when opening a new tab |
| about:performance | Displays memory and performance information about Firefox subprocesses/add-ons/tabs |
| about:plugins | Displays information about installed plugins |
| about:policies | Lists out the Firefox for Enterprise policies |
| about:preferences | Firefox settings (also available through Firefox menu > Options) |
| about:privatebrowsing | Start page when opening a private window |
| about:profiles | Display and manage Firefox profiles |
| about:restartrequired | A page users are sent to when Firefox requires a restart due to an update |
| about:reader | Indicates a web page has Firefox Reader View turned on. See Firefox Reader View for clutter-free web pages |
| about:rights | Displays rights information |
| about:robots | Special page showing notes about robots |
| about:serviceworkers | Displays currently running Service Workers |
| about:studies | Lists the Shield Studies that are installed |
| about:sessionrestore | Session restoration (displayed after a Firefox crash) |
| about:support | Troubleshooting information (also available through Firefox menu > ? (question mark) > Troubleshooting Information) |
| about:sync-log | Displays a synchronization protocol related to the Sync feature |
| about:telemetry | Displays telemetry data collected and sent to Mozilla while Firefox is running (in case the user enabled telemetry) |
| about:url-classifier | Displays the status of the URL Classifier services that Firefox uses (for example for Safe Browsing) |
| about:webrtc | Information about WebRTC usage |
| about:welcome | Page first displayed when Firefox is installed |
| about:welcomeback | Information page displayed after Firefox is reset |
Firefox understands a number of URI schemes and they have various uses:
- about: Special pages (see about:about for a partial list).
- chrome: Internal UI components, including localisable text and customisable appearance.
- data: Used to simulate files. For instance, you could use data:text/plain,Hello! to simulate the effect of a file containing the string Hello!
- file: Used to refer to local files (only works from other files obviously).
- ftp: Used to download from FTP sites.
- http: Used to refer to websites (obviously).
- https: Used to refer to secure sites.
- resource:/// Other internal resources. Always loaded in a content process.
Microsoft Edge URIs
| edge://settings/profiles | Profiles |
| edge://settings/privacy | Privacy, search and services |
| edge://settings/appearance | Appearance |
| edge://settings/sidebar | Sidebar |
| edge://settings/startHomeNTP | Start, home and new tabs |
| edge://settings/shareCopyPaste | Share, copy and paste |
| edge://settings/content | Cookies and site permissions |
| edge://settings/defaultBrowser | Default browser |
| edge://settings/downloads | Downloads |
| edge://settings/familySafety | Family safety |
| edge://settings/languages | Languages |
| edge://settings/printing | Printers |
| edge://settings/system | System and performance |
| edge://settings/reset | Reset settings |
| edge://settings/devices | Phone and other devices |
| edge://settings/accessibility | Accessibility |
| edge://settings/help | About Microsoft Edge |
Vivaldi URIs
| vivaldi://about |
| vivaldi://settings |
| vivaldi://private-intro |
CCleaner Browser URIs
| secure://about |
| secure://accessibility |
| secure://appcache-internals |
| secure://apps |
| secure://blob-internals |
| secure://bluetooth-internals |
| secure://bookmarks |
| secure://chrome |
| secure://components |
| secure://conflicts |
| secure://crashes |
| secure://credits |
| secure://device-log |
| secure://devices |
| secure://dino |
| secure://discards |
| secure://download-internals |
| secure://downloads |
| secure://extensions |
| secure://flags |
| secure://gcm-internals |
| secure://gpu |
| secure://help |
| secure://histograms |
| secure://history |
| secure://indexeddb-internals |
| secure://inspect |
| secure://interstitials |
| secure://interventions-internals |
| secure://invalidations |
| secure://local-state |
| secure://management |
| secure://media-engagement |
| secure://media-internals |
| secure://nacl |
| secure://net-export |
| secure://net-internals |
| secure://network-error |
| secure://network-errors |
| secure://newtab |
| secure://ntp-tiles-internals |
| secure://omnibox |
| secure://password-manager-internals |
| secure://policy |
| secure://predictors |
| secure://print |
| secure://process-internals |
| secure://quota-internals |
| secure://safe-browsing |
| secure://secure-urls |
| secure://security-privacy-center |
| secure://serviceworker-internals |
| secure://settings |
| secure://signin-internals |
| secure://site-engagement |
| secure://suggestions |
| secure://supervised-user-internals |
| secure://sync-internals |
| secure://system |
| secure://terms |
| secure://thumbnails |
| secure://tracing |
| secure://translate-internals |
| secure://usb-internals |
| secure://user-actions |
| secure://version |
| secure://webrtc-internals |
| secure://webrtc-logs |
For Debug
The following pages are for debugging purposes only. They crash or hang the renderer.
| secure://badcastcrash |
| secure://inducebrowsercrashforrealz |
| secure://crashdump |
| secure://kill |
| secure://hang |
| secure://shorthang |
| secure://gpuclean |
| secure://gpucrash |
| secure://gpuhang |
| secure://memory-exhaust |
| secure://ppapiflashcrash |
| secure://ppapiflashhang |
| secure://inducebrowserheapcorruption |
| secure://heapcorruptioncrash |
| secure://quit |
| secure://restart |
Sources:
http://techmeasy.blogspot.com/2011/07/firefoxs-about-commands-and-easter-eggs.html
http://en.wikipedia.org/wiki/About%3a_URI_scheme#Common_about%3a_addresses