diff --git a/docs/configuration.rst b/docs/configuration.rst
index aa58af9c..a98ea518 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -395,6 +395,7 @@ Description
     * ``tapas``
     * ``tsumino``
     * ``twitter``
+    * ``vipergirls``
     * ``zerochan``
 
     These values can also be specified via the
diff --git a/docs/supportedsites.md b/docs/supportedsites.md
index 93e01211..444e4db5 100644
--- a/docs/supportedsites.md
+++ b/docs/supportedsites.md
@@ -712,7 +712,7 @@ Consider all sites to be NSFW unless otherwise known.
 <tr>
     <td>Postimg</td>
     <td>https://postimages.org/</td>
-    <td>individual Images</td>
+    <td>Galleries, individual Images</td>
     <td></td>
 </tr>
 <tr>
@@ -899,7 +899,7 @@ Consider all sites to be NSFW unless otherwise known.
     <td>Vipergirls</td>
     <td>https://vipergirls.to/</td>
     <td>Posts, Threads</td>
-    <td></td>
+    <td>Supported</td>
 </tr>
 <tr>
     <td>Vipr</td>
@@ -995,7 +995,7 @@ Consider all sites to be NSFW unless otherwise known.
     <td>Zerochan</td>
     <td>https://www.zerochan.net/</td>
     <td>individual Images, Tag Searches</td>
-    <td></td>
+    <td>Supported</td>
 </tr>
 <tr>
     <td>かべうち</td>
diff --git a/gallery_dl/extractor/vipergirls.py b/gallery_dl/extractor/vipergirls.py
index 5a20c67f..6dff01c8 100644
--- a/gallery_dl/extractor/vipergirls.py
+++ b/gallery_dl/extractor/vipergirls.py
@@ -9,7 +9,8 @@
 """Extractors for https://vipergirls.to/"""
 
 from .common import Extractor, Message
-from .. import text, util
+from .. import text, util, exception
+from ..cache import cache
 
 from xml.etree import ElementTree
 
@@ -30,6 +31,8 @@ class VipergirlsExtractor(Extractor):
         self.session.headers["Referer"] = self.root
 
     def items(self):
+        self.login()
+
         for post in self.posts():
             data = post.attrib
             data["thread_id"] = self.thread_id
@@ -38,6 +41,31 @@ class VipergirlsExtractor(Extractor):
             for image in post:
                 yield Message.Queue, image.attrib["main_url"], data
 
+    def login(self):
+        if not self._check_cookies(self.cookienames):
+            username, password = self._get_auth_info()
+            if username:
+                self._update_cookies(self._login_impl(username, password))
+
+    @cache(maxage=90*24*3600, keyarg=1)
+    def _login_impl(self, username, password):
+        self.log.info("Logging in as %s", username)
+
+        url = "{}/login.php?do=login".format(self.root)
+        data = {
+            "vb_login_username": username,
+            "vb_login_password": password,
+            "do"               : "login",
+            "cookieuser"       : "1",
+        }
+
+        response = self.request(url, method="POST", data=data)
+        if not response.cookies.get("vg_password"):
+            raise exception.AuthenticationError()
+
+        return {cookie.name: cookie.value
+                for cookie in response.cookies}
+
 
 class VipergirlsThreadExtractor(VipergirlsExtractor):
     """Extractor for vipergirls threads"""
diff --git a/scripts/supportedsites.py b/scripts/supportedsites.py
index e1bce2c4..78e6843e 100755
--- a/scripts/supportedsites.py
+++ b/scripts/supportedsites.py
@@ -340,8 +340,10 @@ AUTH_MAP = {
     "tsumino"        : "Supported",
     "tumblr"         : _OAUTH,
     "twitter"        : "Supported",
+    "vipergirls"     : "Supported",
     "wallhaven"      : _APIKEY_WH,
     "weasyl"         : _APIKEY_WY,
+    "zerochan"       : "Supported",
 }
 
 IGNORE_LIST = (
diff --git a/test/test_results.py b/test/test_results.py
index d28496b3..03a17c40 100644
--- a/test/test_results.py
+++ b/test/test_results.py
@@ -324,7 +324,8 @@ def setup_test_config():
 
     for category in ("danbooru", "atfbooru", "aibooru", "e621", "e926",
                      "instagram", "twitter", "subscribestar", "deviantart",
-                     "inkbunny", "tapas", "pillowfort", "mangadex"):
+                     "inkbunny", "tapas", "pillowfort", "mangadex",
+                     "vipergirls"):
         config.set(("extractor", category), "username", None)
 
     config.set(("extractor", "mastodon.social"), "access-token",