More advanced than official add-ons.
The before and after translations are displayed side by side, so it is easy to verify if the translated version is understood by the other party.
You can also swap the sentences, so you can examine the sentences before translation.

Version 0.9.2 works perfect with FF 131.x again.
Best Translator Add-On for me.
Thanks!

Since Firefox 131.0 the addon no longer works. Or DeepL had changed something and it has nothing to do with Firefox 131.0, but is just a coincidence of timing. I don't know.

Update 2024-10-15:
The addon works again.

Beats Google in accuracy and correct translation of idioms.

The best translator

This is the best add-on for Deepl.
If possible, I would like to see "To DeepL translation" also available as a search engine.

does exactly what it says, it's good

Well, some cleaver shortcut implemented in the right click. Works.

Add-on & website (https://www.deepl.com/translator) both broken by YesScript2 add-on, even in its no-blocking state (grey).

(DeepL states that it is not Internet Explorer compatible — while I am using Firefox — and advises to use Edge Browser instead).
Even though YesScript2 seems not been updated since 2017.

This has been going on for a few months (last November?) but I don't know if it is due to an update of DeepL or Firefox.

Also reported on the YesScript2 add-on page.

It's working again in FF !

it didnt work for a while (probably because deepl changed their api or something like that) BUT NOW IT WORKS AGAIN!!!
ty for this nice addon, i always use it on chrome aswell

Working perfectly.