diff --git a/gallery_dl/extractor/__init__.py b/gallery_dl/extractor/__init__.py
index 1fc4a0ea..00b0376e 100644
--- a/gallery_dl/extractor/__init__.py
+++ b/gallery_dl/extractor/__init__.py
@@ -16,8 +16,6 @@ modules = [
     "4chan",
     "8chan",
     "batoto",
-    "chronos",
-    "coreimg",
     "danbooru",
     "deviantart",
     "dokireader",
@@ -54,7 +52,6 @@ modules = [
     "mangastream",
     "nhentai",
     "nijie",
-    "picmaniac",
     "pinterest",
     "powermanga",
     "rule34",
diff --git a/gallery_dl/extractor/chronos.py b/gallery_dl/extractor/chronos.py
deleted file mode 100644
index 1b4d846a..00000000
--- a/gallery_dl/extractor/chronos.py
+++ /dev/null
@@ -1,46 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Copyright 2015,2016 Mike Fährmann
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-
-"""Extract images from http://chronos.to/"""
-
-from .common import Extractor, Message
-from .. import text
-
-class ChronosImageExtractor(Extractor):
-    """Extractor for single images from chronos.to"""
-    category = "chronos"
-    subcategory = "image"
-    directory_fmt = ["{category}"]
-    filename_fmt = "{filename}"
-    pattern = [r"(?:https?://)?(?:www\.)?chronos\.to/([a-z0-9]{12})"]
-    url_base = "http://chronos.to/"
-    test = [("http://chronos.to/bdrmq7rw7v4y", {
-        "url": "7fcb3fe315c94283644d25ef47a644c2dc8da944",
-        "keyword": "04dbc71a1154728d01c931308184050d61c5da55",
-        "content": "0c8768055e4e20e7c7259608b67799171b691140",
-    })]
-
-    def __init__(self, match):
-        Extractor.__init__(self)
-        self.token = match.group(1)
-
-    def items(self):
-        params = {
-            "op": "view",
-            "id": self.token,
-            "pre": 1,
-            "next": "Continue+to+image.",
-        }
-        page = self.request(self.url_base + self.token, method="post",
-                            data=params).text
-        url     , pos = text.extract(page, '<br><img src="', '"')
-        filename, pos = text.extract(page, ' alt="', '"', pos)
-        data = text.nameext_from_url(filename, {"token": self.token})
-        yield Message.Version, 1
-        yield Message.Directory, data
-        yield Message.Url, url, data
diff --git a/gallery_dl/extractor/coreimg.py b/gallery_dl/extractor/coreimg.py
deleted file mode 100644
index a9ea5699..00000000
--- a/gallery_dl/extractor/coreimg.py
+++ /dev/null
@@ -1,22 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Copyright 2016 Mike Fährmann
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-
-"""Extract images from http://coreimg.net/"""
-
-from . import chronos
-
-class CoreimgImageExtractor(chronos.ChronosImageExtractor):
-    """Extractor for single images from coreimg.net"""
-    category = "coreimg"
-    pattern = [r"(?:https?://)?(?:www\.)?coreimg\.net/([a-z0-9]{12})"]
-    url_base = "https://coreimg.net/"
-    test = [("http://coreimg.net/ykcl5al8uzvg", {
-        "url": "2b32596a2ea66b7cc784e20f3749f75f20998d78",
-        "keyword": "8d71e5b820bc7177baee33ca529c91ae4521299f",
-        "content": "0c8768055e4e20e7c7259608b67799171b691140",
-    })]
diff --git a/gallery_dl/extractor/imagehosts.py b/gallery_dl/extractor/imagehosts.py
index 0e0da2f6..c82b2247 100644
--- a/gallery_dl/extractor/imagehosts.py
+++ b/gallery_dl/extractor/imagehosts.py
@@ -6,14 +6,14 @@
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
 
-"""Extract images from https://img.yt/"""
+"""Collection of extractors for various imagehosts"""
 
 from .common import Extractor, Message
 from .. import text
 from os.path import splitext
 
 class ImagehostImageExtractor(Extractor):
-    """Base class for single-image extractors from various imagehosts"""
+    """Base class for single-image extractors for various imagehosts"""
     subcategory = "image"
     directory_fmt = ["{category}"]
     filename_fmt = "{filename}"
@@ -50,6 +50,10 @@ class ImagehostImageExtractor(Extractor):
         yield Message.Directory, data
         yield Message.Url, url, data
 
+    def get_info(self, page):
+        """Find image-url and string to get filename from"""
+        return "url", "filename"
+
 #
 
 class ImgytImageExtractor(ImagehostImageExtractor):
@@ -77,6 +81,41 @@ class RapidimgImageExtractor(ImgytImageExtractor):
 
 #
 
+class ChronosImageExtractor(ImagehostImageExtractor):
+    """Extractor for single images from chronos.to"""
+    category = "chronos"
+    pattern = [r"(?:https?://)?((?:www\.)?chronos\.to/([a-z0-9]{12}))"]
+    test = [("http://chronos.to/bdrmq7rw7v4y", {
+        "url": "7fcb3fe315c94283644d25ef47a644c2dc8da944",
+        "keyword": "04dbc71a1154728d01c931308184050d61c5da55",
+        "content": "0c8768055e4e20e7c7259608b67799171b691140",
+    })]
+    https = False
+    params = "complex"
+
+    def get_info(self, page):
+        url     , pos = text.extract(page, '<br><img src="', '"')
+        filename, pos = text.extract(page, ' alt="', '"', pos)
+        return url, filename
+
+class CoreimgImageExtractor(ChronosImageExtractor):
+    """Extractor for single images from coreimg.net"""
+    category = "coreimg"
+    pattern = [r"(?:https?://)?((?:www\.)?coreimg\.net/([a-z0-9]{12}))"]
+    test = [("http://coreimg.net/ykcl5al8uzvg", {
+        "url": "2b32596a2ea66b7cc784e20f3749f75f20998d78",
+        "keyword": "8d71e5b820bc7177baee33ca529c91ae4521299f",
+        "content": "0c8768055e4e20e7c7259608b67799171b691140",
+    })]
+
+class PicmaniacImageExtractor(ChronosImageExtractor):
+    """Extractor for single images from pic-maniac.com"""
+    category = "picmaniac"
+    pattern = [r"(?:https?://)?((?:www\.)?pic-maniac\.com/([a-z0-9]{12}))"]
+    test = []
+
+#
+
 class HosturimageImageExtractor(ImagehostImageExtractor):
     """Extractor for single images from hosturimage.com"""
     category = "hosturimage"
diff --git a/gallery_dl/extractor/picmaniac.py b/gallery_dl/extractor/picmaniac.py
deleted file mode 100644
index e43d37d3..00000000
--- a/gallery_dl/extractor/picmaniac.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Copyright 2016 Mike Fährmann
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-
-"""Extract images from http://pic-maniac.com/"""
-
-from . import chronos
-
-class PicmaniacImageExtractor(chronos.ChronosImageExtractor):
-    """Extractor for single images from pic-maniac.com"""
-    category = "picmaniac"
-    pattern = [r"(?:https?://)?(?:www\.)?pic-maniac\.com/([a-z0-9]{12})"]
-    url_base = "http://pic-maniac.com/"
-    test = []