DeepL offers a free API now

wagtail_localize/machine_translators/deepl.py

@@ -11,14 +11,20 @@ def language_code(code, is_target=False):
         return code
 
     return code.split("-")[0].upper()
-
-
+ 
+    
 class DeepLTranslator(BaseMachineTranslator):
     display_name = "DeepL"
-
+
+    def get_api_endpoint(self):
+        if self.options["AUTH_KEY"].endswith(":fx"):
+            return "https://api-free.deepl.com/v2/translate"
+        return "https://api.deepl.com/v2/translate"
+
     def translate(self, source_locale, target_locale, strings):
+
         response = requests.post(
-            "https://api.deepl.com/v2/translate",
+            self.get_api_endpoint(),
             {
                 "auth_key": self.options["AUTH_KEY"],
                 "text": [string.data for string in strings],

wagtail_localize/machine_translators/tests/test_deepl_translator.py

@@ -0,0 +1,20 @@
+
+from django.test import TestCase, override_settings
+
+from wagtail_localize.machine_translators.deepl import DeepLTranslator
+
+
+class TestDeeplTranslator(TestCase):
+    @override_settings(WAGTAILLOCALIZE_MACHINE_TRANSLATOR["CLASS"]="wagtail_localize.machine_translators.deepl.DeepLTranslator")
+    def setUp(self):
+        pass
+
+    @override_settings(WAGTAILLOCALIZE_MACHINE_TRANSLATOR["OPTIONS"]["AUTH_KEY"]="asd-23-ssd-243-adsf-dummy-auth-key:fx")
+    def test_free_api_endpoint(self):
+        free_api_endpoint = DeepLTranslator({}).get_api_endpoint()
+        self.assertEqual(free_api_endpoint, "https://api-free.deepl.com/v2/translate")
+
+    @override_settings(WAGTAILLOCALIZE_MACHINE_TRANSLATOR["OPTIONS"]["AUTH_KEY"]="asd-23-ssd-243-adsf-dummy-auth-key:bla")
+    def test_paid_api_endpoint(self):
+        paid_api_endpoint = DeepLTranslator({}).get_api_endpoint()
+        self.assertEqual(paid_api_endpoint, "https://api.deepl.com/v2/translate")

wagtail_localize/test/settings.py

@@ -178,9 +178,13 @@
 
 WAGTAILLOCALIZE_MACHINE_TRANSLATOR = {
     "CLASS": "wagtail_localize.machine_translators.dummy.DummyTranslator",
+    "OPTIONS": {
+        "AUTH_KEY": "<Your DeepL key here>",
+    },
 }
 
 
+
 DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
 
 if WAGTAIL_VERSION >= (2, 15):