diff --git a/gallery_dl/extractor/500px.py b/gallery_dl/extractor/500px.py
index 4cf5e48a..696b370c 100644
--- a/gallery_dl/extractor/500px.py
+++ b/gallery_dl/extractor/500px.py
@@ -140,7 +140,7 @@ class _500pxGalleryExtractor(_500pxExtractor):
         }),
         # unavailable photos (#1335)
         ("https://500px.com/p/Light_Expression_Photography/galleries/street", {
-            "count": 0,
+            "count": 4,
         }),
         ("https://500px.com/fashvamp/galleries/lera"),
     )
diff --git a/gallery_dl/extractor/bcy.py b/gallery_dl/extractor/bcy.py
index d6e3683c..f867bd9a 100644
--- a/gallery_dl/extractor/bcy.py
+++ b/gallery_dl/extractor/bcy.py
@@ -173,9 +173,8 @@ class BcyPostExtractor(BcyExtractor):
         ("https://bcy.net/item/detail/6950136331708144648", {
             "pattern": r"https://p\d-bcy.byteimg.com/img/banciyuan/[0-9a-f]+"
                        r"~tplv-banciyuan-logo-v3:.+\.image",
-            "count": 10,
-            "keyword": {"filter": "watermark"}
-
+            "count": 8,
+            "keyword": {"filter": "watermark"},
         }),
         # deleted
         ("https://bcy.net/item/detail/6780546160802143236", {
diff --git a/gallery_dl/extractor/foolfuuka.py b/gallery_dl/extractor/foolfuuka.py
index 5ea3adb5..b82160f5 100644
--- a/gallery_dl/extractor/foolfuuka.py
+++ b/gallery_dl/extractor/foolfuuka.py
@@ -137,7 +137,7 @@ class FoolfuukaThreadExtractor(FoolfuukaExtractor):
             "url": "61896d9d9a2edb556b619000a308a984307b6d30",
         }),
         ("https://thebarchive.com/b/thread/739772332/", {
-            "url": "07d39d2cb48f40fb337dc992993d965b0cd5f7cd",
+            "url": "e8b18001307d130d67db31740ce57c8561b5d80c",
         }),
         ("https://archive.wakarimasen.moe/a/thread/223157648/", {
             "url": "fef0758d2eb81b1ba783051fd5ec491d70107a78",
diff --git a/gallery_dl/extractor/hentaihand.py b/gallery_dl/extractor/hentaihand.py
index 44859259..fa8e98bb 100644
--- a/gallery_dl/extractor/hentaihand.py
+++ b/gallery_dl/extractor/hentaihand.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2020 Mike Fährmann
+# Copyright 2020-2021 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
@@ -19,21 +19,23 @@ class HentaihandGalleryExtractor(GalleryExtractor):
     root = "https://hentaihand.com"
     pattern = r"(?:https?://)?(?:www\.)?hentaihand\.com/\w+/comic/([\w-]+)"
     test = (
-        (("https://hentaihand.com/en/comic/kouda-tomohiro-chiyomi-"
-          "blizzard-comic-aun-2016-12-english-nanda-sore-scans"), {
-            "pattern": r"https://cdn.hentaihand.com/.*/images/304546/\d+.jpg$",
-            "count": 19,
+        (("https://hentaihand.com/en/comic/c75-takumi-na-muchi-choudenji-hou-"
+          "no-aishi-kata-how-to-love-a-super-electromagnetic-gun-toaru-kagaku-"
+          "no-railgun-english"), {
+            "pattern": r"https://cdn.hentaihand.com/.*/images/5669/\d+.jpg$",
+            "count": 50,
             "keyword": {
-                "artists"   : ["Kouda Tomohiro"],
-                "date"      : "dt:2020-02-06 00:00:00",
-                "gallery_id": 304546,
+                "artists"   : ["Takumi Na Muchi"],
+                "date"      : "dt:2014-06-28 00:00:00",
+                "gallery_id": 5669,
                 "lang"      : "en",
                 "language"  : "English",
-                "relationships": ["Family", "Step family"],
+                "parodies"  : ["Toaru Kagaku No Railgun"],
+                "relationships": list,
                 "tags"      : list,
-                "title"     : r"re:\[Kouda Tomohiro\] Chiyomi Blizzard",
-                "title_alt" : r"re:\[幸田朋弘\] ちよみブリザード",
-                "type"      : "Manga",
+                "title"     : r"re:\(C75\) \[Takumi na Muchi\] Choudenji Hou ",
+                "title_alt" : r"re:\(C75\) \[たくみなむち\] 超電磁砲のあいしかた",
+                "type"      : "Doujinshi",
             },
         }),
     )
@@ -76,9 +78,9 @@ class HentaihandTagExtractor(Extractor):
                r"/\w+/(parody|character|tag|artist|group|language"
                r"|category|relationship)/([^/?#]+)")
     test = (
-        ("https://hentaihand.com/en/artist/himuro", {
+        ("https://hentaihand.com/en/artist/takumi-na-muchi", {
             "pattern": HentaihandGalleryExtractor.pattern,
-            "count": ">= 18",
+            "count": ">= 6",
         }),
         ("https://hentaihand.com/en/tag/full-color"),
         ("https://hentaihand.com/fr/language/japanese"),
diff --git a/gallery_dl/extractor/mangapark.py b/gallery_dl/extractor/mangapark.py
index 9b6d4bad..4bd55728 100644
--- a/gallery_dl/extractor/mangapark.py
+++ b/gallery_dl/extractor/mangapark.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2015-2020 Mike Fährmann
+# Copyright 2015-2021 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
@@ -56,7 +56,7 @@ class MangaparkChapterExtractor(MangaparkBase, ChapterExtractor):
     test = (
         ("https://mangapark.net/manga/gosu/i811653/c055/1", {
             "count": 50,
-            "keyword": "8344bdda8cd8414e7729a4e148379f147e3437da",
+            "keyword": "db1ed9af4f972756a25dbfa5af69a8f155b043ff",
         }),
         (("https://mangapark.net/manga"
           "/ad-astra-per-aspera-hata-kenjirou/i662051/c001.2/1"), {
@@ -121,7 +121,7 @@ class MangaparkMangaExtractor(MangaparkBase, MangaExtractor):
                r"(/manga/[^/?#]+)/?$")
     test = (
         ("https://mangapark.net/manga/aria", {
-            "url": "f07caf0bc5097c9b32c8c0d6f446bce1bf4bd329",
+            "url": "b8f7db2f581404753c4af37af66c049a41273b94",
             "keyword": "2c0d28efaf84fcfe62932b6931ef3c3987cd48c0",
         }),
         ("https://mangapark.me/manga/aria"),
diff --git a/gallery_dl/extractor/reactor.py b/gallery_dl/extractor/reactor.py
index c62a9429..104dc23e 100644
--- a/gallery_dl/extractor/reactor.py
+++ b/gallery_dl/extractor/reactor.py
@@ -215,7 +215,7 @@ class JoyreactorTagExtractor(ReactorTagExtractor):
             "count": ">= 15",
         }),
         ("http://joyreactor.com/tag/Cirno", {
-            "url": "de1e60c15bfb07a0e9603b00dc3d05f60edc7914",
+            "url": "aa59090590b26f4654881301fe8fe748a51625a8",
         }),
     )
 
@@ -243,7 +243,7 @@ class JoyreactorUserExtractor(ReactorUserExtractor):
     test = (
         ("http://joyreactor.cc/user/hemantic"),
         ("http://joyreactor.com/user/Tacoman123", {
-            "url": "452cd0fa23e2ad0e122c296ba75aa7f0b29329f6",
+            "url": "60ce9a3e3db791a0899f7fb7643b5b87d09ae3b5",
         }),
     )
 
@@ -254,23 +254,27 @@ class JoyreactorPostExtractor(ReactorPostExtractor):
     pattern = JR_BASE_PATTERN + r"/post/(\d+)"
     test = (
         ("http://joyreactor.com/post/3721876", {  # single image
-            "url": "6ce09f239d8b7fdf6dd1664c2afc39618cc87663",
-            "keyword": "147ed5b9799ba43cbd16168450afcfae5ddedbf3",
+            "pattern": r"http://img\d\.joyreactor\.com/pics/post/full"
+                       r"/cartoon-painting-monster-lake-4841316.jpeg",
+            "count": 1,
+            "keyword": "2207a7dfed55def2042b6c2554894c8d7fda386e",
         }),
         ("http://joyreactor.com/post/3713804", {  # 4 images
-            "url": "f08ac8493ca0619a3e3c6bedb8d8374af3eec304",
-            "keyword": "f12c6f3c2f298fed9b12bd3e70fb823870aa9b93",
+            "pattern": r"http://img\d\.joyreactor\.com/pics/post/full"
+                       r"/movie-tv-godzilla-monsters-\d+\.jpeg",
+            "count": 4,
+            "keyword": "d7da9ba7809004c809eedcf6f1c06ad0fbb3df21",
         }),
         ("http://joyreactor.com/post/3726210", {  # gif / video
-            "url": "33a48e1eca6cb2d298fbbb6536b3283799d6515b",
-            "keyword": "d173cc6e88f02a63904e475eacd7050304eb1967",
+            "url": "60f3b9a0a3918b269bea9b4f8f1a5ab3c2c550f8",
+            "keyword": "8949d9d5fc469dab264752432efbaa499561664a",
         }),
         ("http://joyreactor.com/post/3668724", {  # youtube embed
             "url": "bf1666eddcff10c9b58f6be63fa94e4e13074214",
             "keyword": "e18b1ffbd79d76f9a0e90b6d474cc2499e343f0b",
         }),
         ("http://joyreactor.cc/post/1299", {  # "malformed" JSON
-            "url": "ac900743ed7cf1baf3db3b531c3bc414bf1ffcde",
+            "url": "ab02c6eb7b4035ad961b29ee0770ee41be2fcc39",
         }),
     )
 
@@ -311,7 +315,7 @@ class PornreactorUserExtractor(ReactorUserExtractor):
     test = (
         ("http://pornreactor.cc/user/Disillusion", {
             "range": "1-25",
-            "count": ">= 25",
+            "count": ">= 20",
         }),
         ("http://fapreactor.com/user/Disillusion"),
     )
@@ -324,10 +328,10 @@ class PornreactorPostExtractor(ReactorPostExtractor):
     pattern = PR_BASE_PATTERN + r"/post/(\d+)"
     test = (
         ("http://pornreactor.cc/post/863166", {
-            "url": "680db1e33ca92ff70b2c0e1708c471cbe2201324",
+            "url": "a09fb0577489e1f9564c25d0ad576f81b19c2ef3",
             "content": "ec6b0568bfb1803648744077da082d14de844340",
         }),
         ("http://fapreactor.com/post/863166", {
-            "url": "864ecd5785e4898301aa8d054dd653b1165be158",
+            "url": "2a956ce0c90e8bc47b4392db4fa25ad1342f3e54",
         }),
     )
diff --git a/gallery_dl/extractor/subscribestar.py b/gallery_dl/extractor/subscribestar.py
index 83836e53..ae8b58de 100644
--- a/gallery_dl/extractor/subscribestar.py
+++ b/gallery_dl/extractor/subscribestar.py
@@ -140,8 +140,8 @@ class SubscribestarUserExtractor(SubscribestarExtractor):
     test = (
         ("https://www.subscribestar.com/subscribestar", {
             "count": ">= 20",
-            "pattern": r"https://star-uploads.s\d+-us-west-\d+.amazonaws.com"
-                       r"/uploads/users/11/",
+            "pattern": r"https://(star-uploads|ss-uploads-prod)\.s\d+-us-west-"
+                       r"\d+\.amazonaws\.com/uploads(_v2)?/users/11/",
             "keyword": {
                 "author_id": 11,
                 "author_name": "subscribestar",
diff --git a/gallery_dl/extractor/wikiart.py b/gallery_dl/extractor/wikiart.py
index 511a609b..9f95e148 100644
--- a/gallery_dl/extractor/wikiart.py
+++ b/gallery_dl/extractor/wikiart.py
@@ -71,8 +71,8 @@ class WikiartArtistExtractor(WikiartExtractor):
     directory_fmt = ("{category}", "{artist[artistName]}")
     pattern = BASE_PATTERN + r"/(?!\w+-by-)([\w-]+)/?$"
     test = ("https://www.wikiart.org/en/thomas-cole", {
-        "url": "5140343730331786117fa5f4c013a6153393e28e",
-        "keyword": "4d9cbc50ebddfcb186f31ff70b08833578dd0070",
+        "url": "deabec0ed7efa97e2a729ff9d08b539143106bac",
+        "keyword": "751a5457b71c8704982d3bb6485a214cd3d07bf9",
     })
 
     def __init__(self, match):