Firefox has added a new built-in full page translation feature that allows you to seamlessly browse the web in your preferred language. As you navigate the site, Firefox continuously translates new content in real time. This feature will be rolled out gradually and should be available for all users starting in Firefox version 118.
Note: Unlike other browsers that rely on cloud services, Firefox keeps your data safe on your device. There’s no privacy risk of sending text to third parties for analysis because translation happens on your device, not externally.
Does what it needs to do, does it well, and does it locally. What’s not to like
Though it’s not on mobile (yet?), which is a bummer
Only downside is the amount of languages it supports. But I believe this will improve in time
While we wait for that, you can already install the extension with a custom add-on collection, it works alright