CIRCLE WITH A DOT

@itsfoss Also, browser theming in Firefox is very much alive and well via user chrome js/css. I presume that most of the Firefox UI is an HTML DOM these days, so if you're well-versed in that you can do quite a lot. See for example: https://www.reddit.com/r/FirefoxCSS/

@itsfoss If privacy + security are high priorities, then as far as regular browsers go, Firefox is the browser to use and it's simply no contest.

I recommend μBlock Origin as a first line of defense for browser spyware/malware/etc. Firefox's browser engine is now the only one where it works properly and isn't subject to arbitrary limitations. This wasn't a feature Firefox added. It was a feature that the other browser engine altered because it made it harder to sell ads, and in turn most other browsers have less effective μBlock because they use that engine.

Firefox also now has built-in support for offline translations for dozens of languages, courtesy of Project Bergamot.

These are just recent, more user-facing developments. As far as technical enhancements go, Firefox has implemented sandboxing of third-party site data to the current host (aka "total cookie protection") and was an early adopter DNS-over-HTTPs. If you go way back, you'll find that Netscape, Firefox's progenitor, was a pioneer in the development of HTTPS.

If a regular web browser isn't good enough privacy-wise, then there is Tor, which is based on Firefox' web engine and is specifically built to minimize browser tracking at the cost of convenience.