Hi Jason

It is not possible to alter about:config preferences using an add-on.

Hi Jason It is not possible to alter about:config preferences using an add-on.

Well. Is there an API to update the default bookmark location？As is usually done by clicking on the collection star.

I am sorry, but I do not believe that there is.

Perhaps a policy would do what you want. There is a list of policies on github and searchfox.

https://support.mozilla.org/en-US/kb/customizing-firefox-using-group-policy-windows

I researched policy, maybe my knowledge is shallow and I didn't find a solution.

There is also autoconfig.js which enables you to preset preferences. (Remove the blank space in the second link.)

https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig https://www.userchrome. org/what-is-userchrome-js.html

What is your use case for modifying the browser.bookmarks.defaultLocation pref ?

What is your use case for modifying the browser.bookmarks.defaultLocation pref ?

I'm using a third-party bookmark add-on “Bookmark Tab Here”, but Firefox's bookmark button doesn't remember the add-on's most recent bookmark location.