diff --git a/gallery-dl.conf b/gallery-dl.conf
index 78a03bae..5ad10b97 100644
--- a/gallery-dl.conf
+++ b/gallery-dl.conf
@@ -4,7 +4,7 @@
     {
         "pixiv":
         {
-            "directory": ["{category}", "{artist-id}"],
+            "directory_fmt": ["{category}", "{artist-id}"],
             "username": null,
             "password": null
         },
@@ -27,19 +27,13 @@
                 "nijie_login_hash": null
             }
         },
-        "danbooru":
-        {
-            "pattern": ["d(?:anbooru)?[.:-_](\\w.+)"],
-            "filename": "{category}_{id:>07}_{md5}.{extension}"
-        },
         "gelbooru":
         {
-            "pattern": ["g(?:elbooru)?[.:-_](\\w.+)"],
-            "filename": "{category}_{id:>07}_{md5}.{extension}",
+            "filename_fmt": "{category}_{id:>07}_{md5}.{extension}",
             "cookies":
             {
                 "user_id": null,
-                "pass_hash": null,
+                "pass_hash": null
             }
         }
     }
diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index 8af89012..abea3b12 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -17,6 +17,8 @@ from .. import config
 
 class Extractor():
 
+    category = ""
+    subcategory = ""
     directory_fmt = [""]
     filename_fmt = ""
 
diff --git a/gallery_dl/jobs.py b/gallery_dl/jobs.py
index dd56667e..0d3d8763 100644
--- a/gallery_dl/jobs.py
+++ b/gallery_dl/jobs.py
@@ -22,13 +22,14 @@ class DownloadJob():
         self.directory = self.get_base_directory()
         self.downloaders = {}
         self.queue = None
-        self.filename_fmt = config.get(
-            ("extractor", self.extractor.category, "filename"),
-            default=self.extractor.filename_fmt
+        key = ["extractor", self.extractor.category]
+        if self.extractor.subcategory:
+            key.append(self.extractor.subcategory)
+        self.filename_fmt = config.interpolate(
+            key + ["filename_fmt"], default=self.extractor.filename_fmt
         )
-        segments = config.get(
-            ("extractor", self.extractor.category, "directory"),
-            default=self.extractor.directory_fmt
+        segments = config.interpolate(
+            key + ["directory_fmt"], default=self.extractor.directory_fmt
         )
         self.directory_fmt = os.path.join(*segments)