According to some sources, Bergamot, a project focused on providing private client-side machine translations in a web browser - and got funding from the EU -, is making a great progress on getting integrated into Firefox. Kelly Davis from Mozilla published two (1, 2) demo videos on YouTube. I really look forward to this! Google Chrome has translations, but they don't work offline and send everything to the cloud instead. Currently whenever I need to translate something, I use DeepL.
There is some discussion recently about another evil move by Google. Google plans to deprecate (and remove) an API in it's webbrowser Chrome, that is used by many ad-blocking addons. Of course they are ignoring voices from the community! Only enterprise customers will be able to use this API for custom development. Is it a surprise at all, that Google wants to do that? Google (Alphabet) is one of the biggest (ad) companies.
I generally prefer dark user interfaces wherever possible. My phone is set to a dark mode (as far as there is a dark mode in Android Pie), apps like Telegram are set to dark mode and on the desktop I prefer dark modes too. But the most important software I use everyday is a web browser. And most websites don't support a dark mode yet (because there was no native browser feature for that until recently).
Many people use Google Chrome, because they like it's fancy syncing feature. You know, open a tab on your PC and just continue on your phone. Or because of the nice built-in password manager. Just save that damn password and it's securely stored in your Google account and available everywhere. But what about privacy? You can forget it when you use Chrome. You have no privacy there. Google can read all of your browser history, passwords and bookmarks.