A list of internal (and external) pages and useful information for macOS/OS X users (and others) of the Chromium/Blink based version of the web browser Opera.
Note that most internal URLs is accessible using the chrome:// prefix, as Opera just redirects every chrome:// call to opera://.
Also, some internal pages and features will most likely change or be removed with time. Most gists i have seen about internal pages and flags in Chrome and Opera is mostly no longer valid. Chime in if you discovered something new, or if something has gone away. Please only post stuff valid for Opera (since Chrome and Opera don't share every single flag or feature).
Cheers.
Application Name: Opera Developer.app
Version: 45.0.2548.0
Update Stream: Developer
Test Date: 5 April, 2017 (04/05/2017 UTC, 2017-04-05 RFC3339)
System: Mac OS X 10.11.6 64-bit
Browser identification (User Agent):
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.19 Safari/537.36 OPR/45.0.2548.0 (Edition developer)
Path: /Applications/Opera Developer.app
Short Path: /Applications/Opera Developer.app
Terminal Path: /Applications/Opera\ Developer.app
HFS Path: Yoursystemname:Applications:Opera Developer.app
URL Path: file:///Applications/Opera%20Developer.app
Windows Path: \Applications\Opera Developer.app
Path: /Users/yourusername/Library/Application Support/com.operasoftware.OperaDeveloper
Short Path: ~/Library/Application Support/com.operasoftware.OperaDeveloper
Terminal Path: /Users/yourusername/Library/Application\ Support/com.operasoftware.OperaDeveloper
HFS Path: Yoursystemname:Users:yourusername:Library:Application Support:com.operasoftware.OperaDeveloper
URL Path: file:///Users/yourusername/Library/Application%20Support/com.operasoftware.OperaDeveloper/
Windows Path: \Users\yourusername\Library\Application Support\com.operasoftware.OperaDeveloper
Path: /Users/yourusername/Library/Caches/com.operasoftware.OperaDeveloper
Short Path: ~/Library/Caches/com.operasoftware.OperaDeveloper
Terminal Path: /Users/yourusername/Library/Caches/com.operasoftware.OperaDeveloper
HFS Path: Yoursystemname:Users:yourusername:Library:Caches:com.operasoftware.OperaDeveloper
URL Path: file:///Users/yourusername/LibraryCaches/com.operasoftware.OperaDeveloper/
Windows Path: \Users\yourusername\Library\Caches\com.operasoftware.OperaDeveloper
Path: /Users/yourusername/Library/Application Support/com.operasoftware.OperaDeveloper
Short Path: ~/Library/Application Support/com.operasoftware.OperaDeveloper
Terminal Path: /Users/yourusername/Library/Application\ Support/com.operasoftware.OperaDeveloper
HFS Path: Yoursystemname:Users:yourusername:Library:Application Support:com.operasoftware.OperaDeveloper
URL Path: file:///Users/yourusername/Library/Application%20Support/com.operasoftware.OperaDeveloper/
Windows Path: \Users\yourusername\Library\Application Support\com.operasoftware.OperaDeveloper
Path:
/Users/yourusername/Library/Application Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/com.operasoftware.installer.operadeveloper.sfl
Short Path:
~/Library/Application Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/com.operasoftware.installer.operadeveloper.sfl
Terminal Path:
/Users/yourusername/Library/Application\ Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/com.operasoftware.installer.operadeveloper.sfl
HFS Path:
Yoursystemname:Users:yourusername:Library:Application Support:com.apple.sharedfilelist:com.apple.LSSharedFileList.ApplicationRecentDocuments:com.operasoftware.installer.operadeveloper.sfl
Windows Path:
\Users\yourusername\Library\Application Support\com.apple.sharedfilelist\com.apple.LSSharedFileList.ApplicationRecentDocuments\com.operasoftware.installer.operadeveloper.sfl
| URL | Description |
|---|---|
| opera://about/ | About Opera, Update check, Install information |
| opera://settings/ | Manage browser settings |
| opera://themes/ | View and manage Opera themes and wallpapers |
| opera://settings/passwords/ | View and manage passwords |
| opera://bookmarks/ | View and manage bookmarks |
| opera://extensions/ | View and manage installed extensions |
| opera://history/ | View and manage browser history |
| opera://downloads/ | View and manage downloaded files |
| URL | Description |
|---|---|
| opera://flags/ | Enable or disable experimental browser features |
| opera://accessibility/ | Enable and manage accessibility internals |
| URL | Description |
|---|---|
| opera://inspect/ | Inspect pages or extensions |
| opera://profiler/ | View Profile tracking information |
| opera://serviceworker-internals/ | List and manage browser registered Service Workers |
| URL | Description |
|---|---|
| opera://tracing/ | Record browsing activity |
| opera://net-internals/ | Network Diagnostics. Detailed information for: Connections, network, DNS lookups, Sockets, SPDY and other related network connections in use. (Note: Displays this warning: WARNING: chrome://net-internals is being deprecated for exporting log files. Use chrome://net-export instead. in Opera Developer build 45.0.2548.0. However, net-export is not available in this build, maybe never?) |
| opera://histograms/ | View histogram data information (statistic, samples). Example usage (external url): Profiling with Histograms |
| opera://network-errors/ | View network errors for open windows and tabs |
| opera://dns/ | View prefetching information (if enabled) |
| opera://predictors/ | View information about resource prefetch predictors and auto complete for past activities |
| opera://sync-internals/ | View detailed information about Operas sync feature (if enabled) |
| opera://webrtc-internals/ | Dump webrtc data with PeerConnection updates and stats data |
| URL | Description |
|---|---|
| opera://about/credits | View credits and licenses for 3rd party code and libraries used and more |
| opera://gpu/ | View GPU information (video card and supported features, hardware acceleration) |
| opera://view-http-cache/ | View cached files from accessed pages (local and web) |
| opera://invalidations/ | View debug information for browser invalidations |
| opera://appcache-internals/ | View information for appcached pages and used disk space |
| opera://blob-internals/ | View information about Binary Large Objects (BLOBS) |
| opera://indexeddb-internals/ | View information about IndexedDB instaces in User Profile |
| opera://components/ | View internal components installed (example: Widevine Content Decryption Module ) with options for manual update checks for indvidual components |
| opera://media-internals/ | View media information when media (such as video and audio) becomes active |
| opera://gcm-internals/ | View information about Google Cloud Messaging (artefact?) |
| opera://print/ | Loads the Print Page |
| opera://gpuclean/ | Clean up used browser cache for the GPU (?) Can't find any info about this, more than it's for debugging purposes and affects content rendering. Don't know if it even works in Opera |
| URL | Description |
|---|---|
| opera://crash/ | Simulate a crash in the current tab |
| opera://kill/ | Kills the current tab and displays the ”Terminated” page (Out of memory page). |
| opera://hang/ | Simulates Opera freezing (unresponsive application) |
| opera://shorthang/ | Simulates Opera freezing (unresponsive application) for a shorter time than hang |
| opera://gpuhang/ | Simulates a GPU hang (unresponsive browser UI) |
| URL | Description |
|---|---|
| opera://extension-icon/ | Displays the Opera default extension icon (image: 64x64px) |
| opera://favicon/ | Displays the Opera default favicon (image: 16x16px) |
| opera://newtab/ | Loads the ”new tab” page in current tab |
| opera://newtab/ | Loads the ”new tab” page in current tab |
| URL | Description |
|---|---|
| https://addons.opera.com/ | The Opera Add-ons (All) site ==> OFFICIAL |
| https://addons.opera.com/en/extensions/ | The Opera Add-ons (Extensions) site ==> OFFICIAL |
| https://addons.opera.com/en/themes/ | The Opera Add-ons (Themes) site ==> OFFICIAL |
| https://auth.opera.com/account/login | Sign in to your Opera Account ==> OFFICIAL |
| https://dev.opera.com/extensions/ | Opera Extensions Documentation ==> OFFICIAL |
| https://dev.opera.com/ | Opera Developer resources, news and blogs ==> OFFICIAL |
| https://addons.opera.com/developer/ | Opera Add-on developer dashboard (you need to be signed in) ==> OFFICIAL |
| https://www.opera.com/help/ | Opera Help portal (multi platform) ==> OFFICIAL |
| https://www.opera.com/blogs/news/ | Opera Blogs ==> OFFICIAL |
| https://dev.opera.com/extensions/extension-samples/ | Extension templates and samples for Opera ==> OFFICIAL |
| https://dev.opera.com/extensions/apis/ | Opera Extensions API Support ==> OFFICIAL |
| https://dev.opera.com/extensions/dev-tools/ | Extending DevTools in Opera ==> OFFICIAL |
| https://dev.opera.com/extensions/internationalization/ | Internationalization in Opera ==> OFFICIAL |
| https://dev.opera.com/extensions/effective-icons/ | Creating effective icons for Opera Add-ons ==> OFFICIAL |
| https://dev.opera.com/extensions/branding-guidelines/ | Opera Branding Guidelines ==> OFFICIAL |
| https://dev.opera.com/extensions/effective-icons/user-icon.psd | Photoshop (PSD) icon template (Note: Direct download) ==> OFFICIAL |
| https://dev.opera.com/extensions/effective-icons/user-icon.svg | Inkscape SVG icon template (Note: Direct download) ==> OFFICIAL |
| URL | Description |
|---|---|
| http://anti-code.com/devtools-cheatsheet/ | Chrome/Chromium DevTools Cheatsheet |
| https://gist.github.com/ruario/118343ffb9489975f858 | Start Opera for Mac with activation order tab cycling (CLI, not tested) |