diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index 655ab742..8af89012 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -17,6 +17,9 @@ from .. import config
 
 class Extractor():
 
+    directory_fmt = [""]
+    filename_fmt = ""
+
     def __init__(self):
         self.session = requests.Session()
 
diff --git a/gallery_dl/extractor/mangahere.py b/gallery_dl/extractor/mangahere.py
index eaf8af09..0348a3b6 100644
--- a/gallery_dl/extractor/mangahere.py
+++ b/gallery_dl/extractor/mangahere.py
@@ -15,8 +15,6 @@ import re
 class MangaHereMangaExtractor(Extractor):
     """Extract all manga-chapters from mangahere"""
     category = "mangahere"
-    directory_fmt = ["{category}", "{manga}", "c{chapter:>03}"]
-    filename_fmt = "{manga}_c{chapter:>03}_{page:>03}.{extension}"
     pattern = [r"(?:https?://)?(?:www\.)?mangahere\.co/manga/([^/]+)/?$"]
 
     def __init__(self, match):
diff --git a/gallery_dl/extractor/mangamint.py b/gallery_dl/extractor/mangamint.py
index cfa952ab..5c976d5a 100644
--- a/gallery_dl/extractor/mangamint.py
+++ b/gallery_dl/extractor/mangamint.py
@@ -15,8 +15,6 @@ import re
 class MangaMintMangaExtractor(Extractor):
     """Extract all manga-chapters from mangamint"""
     category = "mangamint"
-    directory_fmt = ["{category}", "{manga}", "c{chapter:>03}"]
-    filename_fmt = "{manga}_c{chapter:>03}_{page:>03}.{extension}"
     pattern = [r"(?:https?://)?(?:www\.)?mangamint\.com(/manga/[^\?]+-manga)"]
     url_base = "https://www.mangamint.com"
 
diff --git a/gallery_dl/extractor/mangashare.py b/gallery_dl/extractor/mangashare.py
index 82abd6d1..277c6f9a 100644
--- a/gallery_dl/extractor/mangashare.py
+++ b/gallery_dl/extractor/mangashare.py
@@ -14,8 +14,6 @@ from .. import text
 class MangaShareMangaExtractor(Extractor):
     """Extract all manga-chapters from mangashare"""
     category = "mangashare"
-    directory_fmt = ["{category}", "{manga}", "c{chapter:>03} - {title}"]
-    filename_fmt = "{manga}_c{chapter:>03}_{page:>03}.{extension}"
     pattern = [r"(?:https?://)?read\.mangashare\.com/[^/]+$"]
 
     def __init__(self, match):
diff --git a/gallery_dl/extractor/pixiv.py b/gallery_dl/extractor/pixiv.py
index e96fd8c6..91a9c011 100644
--- a/gallery_dl/extractor/pixiv.py
+++ b/gallery_dl/extractor/pixiv.py
@@ -16,7 +16,6 @@ import time
 
 class PixivUserExtractor(Extractor):
     """Extract all works of a single pixiv-user"""
-
     category = "pixiv"
     directory_fmt = ["{category}", "{artist-id}-{artist-nick}"]
     filename_fmt = "{category}_{artist-id}_{id}{num}.{extension}"
@@ -133,7 +132,6 @@ class PixivUserExtractor(Extractor):
 
 class PixivWorkExtractor(PixivUserExtractor):
     """Extract a single pixiv work/illustration"""
-
     pattern = [(r"(?:https?://)?(?:www\.)?pixiv\.net/member(?:_illust)?\.php"
                 r"\?(?:[^&]+&)*illust_id=(\d+)")]
 
@@ -153,7 +151,6 @@ class PixivWorkExtractor(PixivUserExtractor):
 
 class PixivFavoriteExtractor(PixivUserExtractor):
     """Extract all favorites/bookmarks of a single pixiv-user"""
-
     directory_fmt = ["{category}", "bookmarks", "{artist-id}-{artist-nick}"]
     pattern = [r"(?:https?://)?(?:www\.)?pixiv\.net/bookmark\.php\?id=(\d+)"]
 
@@ -167,7 +164,6 @@ class PixivFavoriteExtractor(PixivUserExtractor):
 
 class PixivBookmarkExtractor(PixivFavoriteExtractor):
     """Extract all favorites/bookmarks of your own account"""
-
     pattern = [r"(?:https?://)?(?:www\.)?pixiv\.net/bookmark\.php()$"]
 
     def __init__(self, match):
@@ -194,7 +190,6 @@ class PixivAPI():
     For in-depth information regarding the Pixiv Public-API, see
     - http://blog.imaou.com/opensource/2014/10/09/pixiv_api_for_ios_update.html
     """
-
     token_timeout = 50*60 # 50 minutes
 
     def __init__(self, session):