Translate text on Mac
When you work in documents, emails or messages, view photos or images, or browse web pages, you can select text to translate into supported languages and hear how it sounds when spoken.
Translate text
You can easily translate text in different apps on Mac, including some third-party apps. You can also use Live Text to translate text in an image.
Select the text you want to translate.
Control-click the selected text, then choose Translate.
From the language pop-up menus, choose the language of the text you’re translating (if necessary) and the language you want to translate it into.
If you don’t designate a language, your Mac translates into your preferred language (if supported) or into a default language for your region.
Tip: Click the Play button 
to listen to the translation. You can also click Copy Translation to add the translation to your Clipboard for later.
Replace text with a translation
When writing on your Mac, you can replace what you’ve written with a translation.
Select the text you want to replace with a translation.
Control-click the selected text, then choose Translate.
Click Replace with Translation to insert the translation and replace the original text.
Download languages for offline translation
You can download languages to translate when offline. Offline translations may be less accurate than translations processed using Apple servers. Siri and Safari always process translations online.
On your Mac, choose Apple menu
in the sidebar, then click Language & Region on the right. (You may need to scroll down.)Click Translation Languages in the lower right.
Click Download for each language you want to use. To remove a language you downloaded, click Remove.
To process translations on your Mac, even when connected to the internet, select On-Device Mode.
Click Done.
