Been having the same issue as fellow reviewer Raşit. Makes me unable to type in the field if it gets unfocused. Very good and accurate translations, but the extension just makes most websites unusable.

Il ne se passe absolument rien que je fais traduire cette selection

Buggy. It breaks text fields on some websites like https://stackoverflow.com/ (try to write a comment and delete some characters) and https://support.xbox.com/en-US/survey/storebail (try to type and delete some characters). It makes it look like your text is not deleted.

See this: https://imgur.com/isMR8Un

The best add-on for translation

Еще немного доработать и возможно будет лучшим!

It gives a smooth UX. It would be even nicer to see 3 or 4 suggestions.
The first one isn't always the best match. At least for Hungarian.

Tut was es soll. Ist aber irgendwie dämlich programmiert:
Die erste Bestätigung der Rechte bewirkt gar nichts, man nochmals rechts oben auf das Addon-Symbol klicken oder in den Berechtigungen einstellen.

Aber warum kann man diese Berechtigung abschalten, wenn das Addon dann nicht mehr funktioniert? Das erschließt sich mir nicht. Und dann muss man erst mal drauf kommen, dass man ein 2. Mal was einstellen muss. Man hat ja schon bei der Installation was bestätigt.
Intuitiv geht anders.

1. There is no option for automatically translating selected text without having to click on the DeepL icon. This feature exists in other translation extensions (e.g. Simple Translate).

2. When you try to translate a text written in your native language, DeepL does not automatically translate it into a pre-selected language, but simply recopies the text, which is obviously pointless.

3. I tested the "write with DeepL" function on Reddit, but it's still too buggy and I didn't manage to use it.

4. DeepL still does not support Esperanto, which is the most widely spoken international auxiliary language in the world, with around 2 million speakers (in comparison, Estonian, supported by DeepL, is spoken by around 1.1 million people).

Ich bin absolut begeistert. Ich nutze DeepL bereits seit mehrern Jahren und es ist der beste Übersetzer, den ich im Laufe der Jahre ausprobiert habe. Die Funktionen sind insgesamt vielfältig und werden ständig erweitert. Hut ab und weiter so.

The extension works very well, although the icon does not appear on some sites. Also, when accessing the settings menu of the plugin, I found it difficult to customise the key combination. Apart from these aspects, I found no major difficulties in using the add-on. I recommend everyone to make use of this tool for instant translations, without having to leave the browser.

DeepL is my translator of choice. It is usually very accurate—but for official work (as with all translator software), I follow up by reverse-translating. This ensures my meaning has been conveyed as precisely as possible. If in doubt, I review the input text and punctuation until satisfied. I like this software a lot, and recommend it to others.