Firefox Profiles are a great feature. But they do have a drawback - there is no way to tell which profile you're navigating to when using CmdTab navigation.

Screenshots are disallowed in the modal, so here's a photo of the problem:

CmdTab is the quickest way to navigate, so please don't suggest I use Mission Control instead.

I know that it is possible to replace the .icns file image for an app if the multiple instances are the result of multiple .app files - but that's not how Firefox works. The multiple icons you see in the photo all come from a single Firefox.app file in the Applications folder.

How Mozilla implemented this is a mystery to me, and I don't see any way to tinker with it. But I assume there are people out there who are far more clever in this regard, so I ask the community.

After posting this question I posted feedback about this as an idea to Mozilla Connect.

I proposed differentiating between the profile instances using profile avatar images as macOS app icon adornments that appear in Application Switcher.

Here's a rough mock-up of what that could look like:

Community members can vote on this idea.

Who knows if or when this will be implemented. So in the meantime, if anyone here on SE has any other ideas/solutions/workarounds/hacks, I'm still open to them.

Apple

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