this post was submitted on 02 Jan 2024
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Firefox

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Hellow, im trying to hide some element in firefox using userChrome. In perticular on left the the "View recent browsing accross windows and devices" how could i do that? Or what is a good resource to know how to learn this myself?

Thank for your time and have a nice day!

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[–] [email protected] 6 points 10 months ago (2 children)

If you mean this button:

...you can just remove that by clicking the "Remove from Toolbar" in the right-click menu (as shown).

[–] [email protected] 6 points 10 months ago

If you still want to learn it, these two articles are good:

The video in the second article is important. Near the end of the video, they show the Browser Toolbox. With that, you can select a UI element in Firefox's UI to find out what the element's ID is. You will need the ID for writing the rule.

[–] [email protected] 2 points 10 months ago (1 children)

Yes i do, i did know that but i wanted my config to be easy to copy paste between machines. Still thanks for your input

[–] [email protected] 1 points 10 months ago (1 children)

Ah, well, I still don't want to discourage you from digging into the Firefox CSS customizations. It is a really useful tool to know.

But for this purpose, you probably want the about:config value browser.uiCustomization.state. It contains all information about UI placement customizations, which you probably want to copy-paste as a whole anyways.

You can create a user.js file in the profile directory to set the about:config value.

[–] [email protected] 2 points 10 months ago

Ahh i havent hears of that, thank you very much!!!

[–] [email protected] 1 points 10 months ago (1 children)

I believe userChrome is deprecated and won't be read by Firefox anymore. I don't know if there is a replacement though.

[–] [email protected] 8 points 10 months ago

You just have to set toolkit.legacyUserProfileCustomizations.stylesheets in about:config to true.

Yes, that does say "legacy", but I don't think, Mozilla cares to actually remove it. They mainly introduced that about:config flag to reduce startup time for the 99.9% of users that don't use a userChrome.css file...