diff --git a/gallery_dl/extractor/danbooru.py b/gallery_dl/extractor/danbooru.py
index 9b7e7fac..4fa75cca 100644
--- a/gallery_dl/extractor/danbooru.py
+++ b/gallery_dl/extractor/danbooru.py
@@ -11,32 +11,43 @@
 from . import booru
 
 
+BASE_PATTERN = (
+    r"(?:https?://)?"
+    r"(?P<subdomain>danbooru|hijiribe|sonohara|safebooru)"
+    r"\.donmai\.us")
+
+
 class DanbooruExtractor(booru.JsonParserMixin,
                         booru.DanbooruPageMixin,
                         booru.BooruExtractor):
     """Base class for danbooru extractors"""
     category = "danbooru"
-    api_url = "https://danbooru.donmai.us/posts.json"
     page_limit = 1000
 
+    def __init__(self, match):
+        super().__init__(match)
+        self.subdomain = match.group("subdomain")
+        self.scheme = "https" if self.subdomain == "danbooru" else "http"
+        self.api_url = "{scheme}://{subdomain}.donmai.us/posts.json".format(
+            scheme=self.scheme, subdomain=self.subdomain)
+
 
 class DanbooruTagExtractor(booru.TagMixin, DanbooruExtractor):
     """Extractor for images from danbooru based on search-tags"""
-    pattern = [r"(?:https?://)?(?:danbooru|hijiribe|sonohara)\.donmai\.us"
-               r"/posts\?(?:[^&#]*&)*tags=(?P<tags>[^&#]+)"]
+    pattern = [BASE_PATTERN + r"/posts\?(?:[^&#]*&)*tags=(?P<tags>[^&#]+)"]
     test = [
         ("https://danbooru.donmai.us/posts?tags=bonocho", {
             "content": "b196fb9f1668109d7774a0a82efea3ffdda07746",
         }),
         ("https://hijiribe.donmai.us/posts?tags=bonocho", None),
         ("https://sonohara.donmai.us/posts?tags=bonocho", None),
+        ("https://safebooru.donmai.us/posts?tags=bonocho", None),
     ]
 
 
 class DanbooruPoolExtractor(booru.PoolMixin, DanbooruExtractor):
     """Extractor for image-pools from danbooru"""
-    pattern = [r"(?:https?://)?(?:danbooru|hijiribe|sonohara)\.donmai\.us"
-               r"/pools/(?P<pool>\d+)"]
+    pattern = [BASE_PATTERN + r"/pools/(?P<pool>\d+)"]
     test = [("https://danbooru.donmai.us/pools/7659", {
         "content": "b16bab12bea5f7ea9e0a836bf8045f280e113d99",
     })]
@@ -44,8 +55,7 @@ class DanbooruPoolExtractor(booru.PoolMixin, DanbooruExtractor):
 
 class DanbooruPostExtractor(booru.PostMixin, DanbooruExtractor):
     """Extractor for single images from danbooru"""
-    pattern = [r"(?:https?://)?(?:danbooru|hijiribe|sonohara)\.donmai\.us"
-               r"/posts/(?P<post>\d+)"]
+    pattern = [BASE_PATTERN + "/posts/(?P<post>\d+)"]
     test = [("https://danbooru.donmai.us/posts/294929", {
         "content": "5e255713cbf0a8e0801dc423563c34d896bb9229",
     })]
@@ -53,8 +63,7 @@ class DanbooruPostExtractor(booru.PostMixin, DanbooruExtractor):
 
 class DanbooruPopularExtractor(booru.PopularMixin, DanbooruExtractor):
     """Extractor for popular images from danbooru"""
-    pattern = [r"(?:https?://)?(?:danbooru|hijiribe|sonohara)\.donmai\.us"
-               r"/explore/posts/popular(?:\?(?P<query>[^#]*))?"]
+    pattern = [BASE_PATTERN + r"/explore/posts/popular(?:\?(?P<query>[^#]*))?"]
     test = [
         ("https://danbooru.donmai.us/explore/posts/popular", None),
         (("https://danbooru.donmai.us/explore/posts/popular"
@@ -62,4 +71,9 @@ class DanbooruPopularExtractor(booru.PopularMixin, DanbooruExtractor):
             "count": 20,
         }),
     ]
-    api_url = "https://danbooru.donmai.us/explore/posts/popular.json"
+
+    def __init__(self, match):
+        super().__init__(match)
+        urlfmt = "{scheme}://{subdomain}.donmai.us/explore/posts/popular.json"
+        self.api_url = urlfmt.format(
+            scheme=self.scheme, subdomain=self.subdomain)