Firefox is About to Become an Almost Complete Copy of Chrome But this rightly rubs some people the wrong way. Firefox’s extension system is about to become less powerful. Currently, browser extensions can do practically anything in Firefox. That leads to security problems, compatibility issues, and breakages during development. But it’s also Firefox’s big advantage - Firefox is the browser with the most powerful add-on framework, bar none. That’s about to no longer be true. Mozilla will add features to allow the most popular add-ons to continue to function, but less-used add-ons and future add-ons will be much more restricted in what they can do.
If Firefox no longer has the most powerful add-on framework, its biggest advantage over its competitors will be gone.
But there’s no doubt that Firefox is gradually losing its distinct identity. Abandoning the most powerful extension framework for an add-on model largely compatible with Chrome’s will be a huge blow to a vocal part of Firefox’s user base.