diff --git a/gallery_dl/extractor/imagehosts.py b/gallery_dl/extractor/imagehosts.py
index a6e848ca..8a1bb3bd 100644
--- a/gallery_dl/extractor/imagehosts.py
+++ b/gallery_dl/extractor/imagehosts.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2016-2022 Mike Fährmann
+# Copyright 2016-2023 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
@@ -19,23 +19,23 @@ class ImagehostImageExtractor(Extractor):
     basecategory = "imagehost"
     subcategory = "image"
     archive_fmt = "{token}"
-    https = True
-    params = None
-    cookies = None
-    encoding = None
+    _https = True
+    _params = None
+    _cookies = None
+    _encoding = None
 
     def __init__(self, match):
         Extractor.__init__(self, match)
         self.page_url = "http{}://{}".format(
-            "s" if self.https else "", match.group(1))
+            "s" if self._https else "", match.group(1))
         self.token = match.group(2)
 
-        if self.params == "simple":
-            self.params = {
+        if self._params == "simple":
+            self._params = {
                 "imgContinue": "Continue+to+image+...+",
             }
-        elif self.params == "complex":
-            self.params = {
+        elif self._params == "complex":
+            self._params = {
                 "op": "view",
                 "id": self.token,
                 "pre": "1",
@@ -46,16 +46,16 @@ class ImagehostImageExtractor(Extractor):
     def items(self):
         page = self.request(
             self.page_url,
-            method=("POST" if self.params else "GET"),
-            data=self.params,
-            cookies=self.cookies,
-            encoding=self.encoding,
+            method=("POST" if self._params else "GET"),
+            data=self._params,
+            cookies=self._cookies,
+            encoding=self._encoding,
         ).text
 
         url, filename = self.get_info(page)
         data = text.nameext_from_url(filename, {"token": self.token})
         data.update(self.metadata(page))
-        if self.https and url.startswith("http:"):
+        if self._https and url.startswith("http:"):
             url = "https:" + url[5:]
 
         yield Message.Directory, data
@@ -102,8 +102,8 @@ class ImxtoImageExtractor(ImagehostImageExtractor):
             "exception": exception.NotFoundError,
         }),
     )
-    params = "simple"
-    encoding = "utf-8"
+    _params = "simple"
+    _encoding = "utf-8"
 
     def __init__(self, match):
         ImagehostImageExtractor.__init__(self, match)
@@ -167,8 +167,8 @@ class AcidimgImageExtractor(ImagehostImageExtractor):
         "keyword": "135347ab4345002fc013863c0d9419ba32d98f78",
         "content": "0c8768055e4e20e7c7259608b67799171b691140",
     })
-    params = "simple"
-    encoding = "utf-8"
+    _params = "simple"
+    _encoding = "utf-8"
 
     def get_info(self, page):
         url, pos = text.extract(page, '<img class="centred" src="', '"')
@@ -226,7 +226,7 @@ class ImagetwistImageExtractor(ImagehostImageExtractor):
 
     @property
     @memcache(maxage=3*3600)
-    def cookies(self):
+    def _cookies(self):
         return self.request(self.page_url).cookies
 
     def get_info(self, page):
@@ -264,7 +264,7 @@ class PixhostImageExtractor(ImagehostImageExtractor):
         "keyword": "3bad6d59db42a5ebbd7842c2307e1c3ebd35e6b0",
         "content": "0c8768055e4e20e7c7259608b67799171b691140",
     })
-    cookies = {"pixhostads": "1", "pixhosttest": "1"}
+    _cookies = {"pixhostads": "1", "pixhosttest": "1"}
 
     def get_info(self, page):
         url     , pos = text.extract(page, "class=\"image-img\" src=\"", "\"")
@@ -335,7 +335,7 @@ class TurboimagehostImageExtractor(ImagehostImageExtractor):
     test = ("https://www.turboimagehost.com/p/39078423/test--.png.html", {
         "url": "b94de43612318771ced924cb5085976f13b3b90e",
         "keyword": "704757ca8825f51cec516ec44c1e627c1f2058ca",
-        "content": "0c8768055e4e20e7c7259608b67799171b691140",
+        "content": "f38b54b17cd7462e687b58d83f00fca88b1b105a",
     })
 
     def get_info(self, page):
@@ -366,8 +366,8 @@ class ImgclickImageExtractor(ImagehostImageExtractor):
         "keyword": "6895256143eab955622fc149aa367777a8815ba3",
         "content": "0c8768055e4e20e7c7259608b67799171b691140",
     })
-    https = False
-    params = "complex"
+    _https = False
+    _params = "complex"
 
     def get_info(self, page):
         url     , pos = text.extract(page, '<br><img src="', '"')