There is no about:config at the moment.

the feature request on chromium was closed on July 22nd with the status WontFix so you'll probably have to keep bumping the original feature request or open a new request here with additional ideas or features than the previous.

Answer from Greg Buehler on Stack Exchange
Discussions

chrome://flags
Hello All, Whenever I made changes on "chrome://flags" the changes are not persistent. The changes are gone when we restart the browser. Please let me know the way to change it persistently. More on learn.microsoft.com
🌐 learn.microsoft.com
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Is there any documentation to the about:config page? : firefox
I know it says to be careful on this page. I am just curious about a few specific settings that I have encountered. Would be nice if possible to... More on old.reddit.com
🌐 r/firefox
What are useful or cool settings in about:config? : firefox
The latest news and developments on Firefox and Mozilla, a global non-profit that strives to promote openness, innovation and opportunity on the... More on old.reddit.com
🌐 r/firefox
Site-specific about:config parameter : firefox
Hi everyone, I tried to search for a bit now, but couldn't find an answer. I would like to have dom.event.clipboardevents.enabled set to false... More on old.reddit.com
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Computer Hope
computerhope.com › jargon › a › about-config.htm
What Is an About:config?
Explore the hidden settings of your Firefox browser with about:config, aka the configuration editor. Learn how to open, use, modify, add, or delete settings.
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Google Support
support.google.com › chrome › answer › 3296214
Reset Chrome settings to default - Google Chrome Help
Homepage and tabs: Learn how to set your Chrome homepage and set default startup tabs. The new tab page: Learn how to set the page that a new tab opens to. Tabs you have pinned: Learn how to pin tabs. Content settings: Like letting a site show you pop-ups or use your microphone. Learn how to change your content settings. Cookies and site data: Like items in an online shopping cart. Learn how to manage cookies and site data. Extensions and themes: Learn more about extensions and themes.
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Chrome Web Store
chromewebstore.google.com › detail › settings › afcolgfopkbeailjgaablmhiemdnhlch
Settings - Chrome Web Store
Why bother adding a separate extension for something that needs only two clicks in the Google Chrome Browser menu? We help you save one click, which is 50% of the effort needed. You can also modify chrome profile & Reset default chrome settings via this extension.
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Chrome for Developers
developer.chrome.com › docs › web platform › what are chrome flags?
What are Chrome flags? | Web Platform | Chrome for Developers
February 8, 2023 - Now you can use the heads-up display ... about web page performance. Note: If you make changes chrome://flags, all the flags you've changed are listed first on the page. If you're a web developer, you may want to set flags by opening Chrome from the command line. You run the command to open Chrome and add the flags you want to set. There are more Chrome settings you can configure from the command ...
Find elsewhere
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GitHub
github.com › mozilla-mobile › fenix › issues › 21276
enable about:config in stable release · Issue #21276 · mozilla-mobile/fenix
I understand ff has a smaller team than chromium and can't compete with them but please think this over, chromium (and forks) allow a lot of configuration through thier gui (managing cookies, java script, etc) and offer a supreme ux and while they are targeted at normal users they allow users to change many settings that can break the browser through chrome://flags without even a warning. On the other hand firefox has both terrible ux and ui it dosen't allow many configuration in ui and all controls are hidden in about:config there is just no way you could dramatically allow users to enable them through gui (if you could you would have done that by now), also even if you could it would take alot more time to add them.
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Google Groups
groups.google.com › a › chromium.org › g › chromium-extensions › c › Nk5Pj7yrsmQ
linking to chrome://settings/
I'm trying to link to chrome://settings/clearBrowserData, but I'm getting "Not allowed to load local resource: chrome://settings/clearBrowserData". I added "chrome://settings" to permissions in my manifest.
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Nira
nira.com › home › the 9 hidden chrome settings you should change right now
How to find and change Google Chrome settings
June 16, 2020 - To find Chrome settings, go to the Chrome menu (the three dots next to your profile picture) and select Settings, or type chrome://settings into the omnibar.
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Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 3743072 › chrome-flags
chrome://flags - Microsoft Q&A
Download Microsoft Edge More info about Internet Explorer and Microsoft Edge ... Hello All, Whenever I made changes on "chrome://flags" the changes are not persistent. The changes are gone when we restart the browser.
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How-To Geek
howtogeek.com › home › features › how to change hidden advanced settings in any browser
How to Change Hidden Advanced Settings in Any Browser
March 8, 2013 - After changing a setting, you’ll need to restart Chrome for the change to take effect. To access Firefox’s advanced settings, type about:config into its address bar and press Enter. You’ll see a warning page.
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Mozilla Support
support.mozilla.org › en-US › questions › 953551
Can I safely remove all references to CHROME from about ...
March 15, 2013 - JavaScript is disabled in your browser · Please enable JavaScript to proceed · A required part of this site couldn’t load. This may be due to a browser extension, network issues, or browser settings. Please check your connection, disable any ad blockers, or try using a different browser
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Google Support
support.google.com › chrome › answer › 114662
Change site settings permissions - Android - Google Chrome Help
On your Android device, open Chrome . At the top right, tap More Settings. Under "Advanced," tap Site settings. Tap the permission you want to update. ... All sites: Review all the sites that have specific permissions. MIDI device control & reprogram: Sites usually ask to control and reprogram Musical Instrument Digital Interface (MIDI) devices to create music and edit music or update device firmware. You can turn this on or off under "All sites." Learn more about MIDI devices and permissions.
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Groovy Post
groovypost.com › how-to › how to access and change hidden advanced settings in chrome and firefox
How to Access and Change Hidden Advanced Settings in Chrome and Firefox
April 16, 2024 - Firefox’s advanced settings page ... through the Firefox menu. To access the advanced settings, type: about:config into the address bar and press Enter....
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Google Support
support.google.com › chrome › a › answer › 2657289
Set Chrome policies for users or browsers - Chrome Enterprise and Education Help
If you signed up for Chrome Enterprise Core, go to Menu Chrome browser > Settings. (Optional) To apply the setting only to some users and enrolled browsers, at the side, select an organizational unit (often used for departments) or configuration group (advanced). Show me how · Group settings override organizational units. Learn more · Click the setting you want to configure. Learn about ...
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Google Support
support.google.com › chrome › a › answer › 14749672
Set Chrome policies using the Custom Configurations page - Chrome Enterprise and Education Help
The policy value set using the Custom configurations page continues to apply. If you want to modify the policy value, you must use the Admin console settings page. Once modified, the Admin console settings policy value overwrites the JSON configuration.
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Mozilla Connect
connect.mozilla.org › t5 › ideas › firefox-for-android-about-config › idi-p › 8071 › page › 4
Firefox for Android - about:config - Page 4 - Mozilla Connect
August 26, 2025 - I cannot unterstand, why "about:config" is missing in Firefox for Android (stable). Why we have "about:config" in Firefox for Windows, Linux and macOS (stable), but not in Firefox for Android (stable)? Please implement it or redirect "about:config" to "chrome://geckoview/content/config.xhtml" .