Using DeepL API to translate text

Question

Is there any possibility to find out if the DeepL translator offers an API for the translation? Unfortunately I haven't found any information on this.

Would like to implement this to an Excel script for auto translation. I've already tried it with Google (like https://translate.google.com/#en/es/Hello%20World) but DeepL seems more accurate.

Answer 1

The REST API is finally (commercially) available, see the API reference documentation.

A sample request would be

https://api.deepl.com/v1/translate?text=Hello%20World!&target_lang=EN&auth_key=XXX

where XXX is the authentication key you need to register with DeepL.

Answer 2

There is a POST call that allows you get the translations, I don't know how many time this will be supported or it's times limitations but here it is:

Url: https://www.deepl.com/jsonrpc

You should make a POST call with the next json:

{
        'jsonrpc': '2.0',
        'method': 'LMT_handle_jobs',
        'params': {
            'jobs': [
                {
                    'kind':'default',
                    'raw_en_sentence': TEXT_TO_TRANSLATE
                }
            ],
            'lang': {
                'user_preferred_langs': [
                    FROM_LANGUAGE,
                    TO_LANGUAGE
                ],
                'source_lang_user_selected': FROM_LANGUAGE,
                'target_lang': TO_LANGUAGE
            },
            'priority': -1
        },
}

The available languages are:

auto  Auto detect
DE    German
EN    English
FR    French
ES    Spanish
IT    Italian
NL    Dutch
PL    Polish

TO_LANGUAGE must be a valid language and FROM_LANGUAGE can be a valid language or auto

I wrote a python module that wraps this API: pydeepl There are currently also a node package and a php client that accomplish the same goal.

Answer 3

There is a free DeepL API, but you need to register and an important point is that they ask your credit card number:

"We need your credit card information in order to prevent misuse of our free API, in particular to prevent fraudulent multiple registrations. Your credit card won't be charged unless you manually upgrade to DeepL API Pro."