Greasy Fork is available in English.
Watch for target language element class change, copy new value of textarea to clipboard each time change has been detected.
< Feedback op DeepL - Auto VN Translation Extension Helper
Updated, checked and worked on Firefox and Chrome. If you still have problems please send me a message.
I can't get this to work. The script doesn't show as running on tampermonkey on chrome when on the deepl site.