Yab translates a page in place with Apple’s own translation, on your Mac: nothing is sent anywhere. It translates into your Mac’s first language.
- Show the address bar with ⇧⌘L, if it isn’t showing.
- Point at the site’s name and click the lock.
- Choose Translate to …. Show Original puts it back.
The first time, macOS may offer to download the languages. Text the page adds after translating stays as it was, and a new page starts in its own language.