diff --git a/docs/supportedsites.md b/docs/supportedsites.md
index 740f4e92..cbcf4320 100644
--- a/docs/supportedsites.md
+++ b/docs/supportedsites.md
@@ -1543,12 +1543,6 @@ Consider all listed sites to potentially be NSFW.
 <tr id="shimmie2" title="shimmie2">
     <td colspan="4"><strong>Shimmie2 Instances</strong></td>
 </tr>
-<tr id="giantessbooru" title="giantessbooru">
-    <td>Giantessbooru</td>
-    <td>https://sizechangebooru.com/</td>
-    <td>Posts, Tag Searches</td>
-    <td></td>
-</tr>
 <tr id="cavemanon" title="cavemanon">
     <td>Cavemanon</td>
     <td>https://booru.cavemanon.xyz/</td>
diff --git a/gallery_dl/extractor/shimmie2.py b/gallery_dl/extractor/shimmie2.py
index 82493421..b9886467 100644
--- a/gallery_dl/extractor/shimmie2.py
+++ b/gallery_dl/extractor/shimmie2.py
@@ -26,9 +26,6 @@ class Shimmie2Extractor(BaseExtractor):
         if file_url := self.config_instance("file_url"):
             self.file_url_fmt = file_url
 
-        if self.category == "giantessbooru":
-            self.posts = self._posts_giantessbooru
-
     def items(self):
         data = self.metadata()
 
@@ -67,11 +64,6 @@ class Shimmie2Extractor(BaseExtractor):
 
 
 BASE_PATTERN = Shimmie2Extractor.update({
-    "giantessbooru": {
-        "root": "https://sizechangebooru.com",
-        "pattern": r"(?:sizechange|giantess)booru\.com",
-        "cookies": {"agreed": "true"},
-    },
     "cavemanon": {
         "root": "https://booru.cavemanon.xyz",
         "pattern": r"booru\.cavemanon\.xyz",
@@ -159,36 +151,6 @@ class Shimmie2TagExtractor(Shimmie2Extractor):
                 if not extr(f"/{pnum}'>{pnum}<", ">"):
                     return
 
-    def _posts_giantessbooru(self):
-        pnum = text.parse_int(self.groups[-1], 1)
-        file_url_fmt = (self.root + "/index.php?q=/image/{}.jpg").format
-
-        while True:
-            url = f"{self.root}/index.php?q=/post/list/{self.tags}/{pnum}"
-            extr = text.extract_from(self.request(url).text)
-
-            while True:
-                pid = extr("href='./index.php?q=/post/view/", "&")
-                if not pid:
-                    break
-
-                tags, dimensions, size = extr("title='", "'").split(" // ")
-                width, _, height = dimensions.partition("x")
-
-                yield {
-                    "file_url": file_url_fmt(pid),
-                    "id"      : pid,
-                    "md5"     : "",
-                    "tags"    : tags,
-                    "width"   : width,
-                    "height"  : height,
-                    "size"    : text.parse_bytes(size[:-1]),
-                }
-
-            pnum += 1
-            if not extr(f"/{pnum}'>{pnum}<", ">"):
-                return
-
 
 class Shimmie2PostExtractor(Shimmie2Extractor):
     """Extractor for single shimmie2 posts"""
@@ -221,18 +183,3 @@ class Shimmie2PostExtractor(Shimmie2Extractor):
             post["md5"] = text.extr(post["file_url"], "/_images/", "/")
 
         return (post,)
-
-    def _posts_giantessbooru(self):
-        post_id = self.groups[-1]
-        url = f"{self.root}/index.php?q=/post/view/{post_id}"
-        extr = text.extract_from(self.request(url).text)
-
-        return ({
-            "id"      : post_id,
-            "tags"    : extr(": ", "<").partition(" - ")[0].rstrip(")"),
-            "md5"     : "",
-            "file_url": self.root + extr("id='main_image' src='.", "'"),
-            "width"   : extr("orig_width =", ";"),
-            "height"  : 0,
-            "size"    : 0,
-        },)
diff --git a/test/results/giantessbooru.py b/test/results/giantessbooru.py
deleted file mode 100644
index b28b13c4..00000000
--- a/test/results/giantessbooru.py
+++ /dev/null
@@ -1,62 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# 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.
-
-from gallery_dl.extractor import shimmie2
-
-
-__tests__ = (
-{
-    "#url"     : "https://sizechangebooru.com/index.php?q=/post/list/drawing/1",
-    "#category": ("shimmie2", "giantessbooru", "tag"),
-    "#class"   : shimmie2.Shimmie2TagExtractor,
-    "#pattern" : r"https://sizechangebooru\.com/index\.php\?q=/image/\d+\.jpg",
-    "#range"   : "1-100",
-    "#count"   : 100,
-},
-
-{
-    "#url"     : "https://giantessbooru.com/index.php?q=/post/list/drawing/1",
-    "#category": ("shimmie2", "giantessbooru", "tag"),
-    "#class"   : shimmie2.Shimmie2TagExtractor,
-},
-
-{
-    "#url"     : "https://giantessbooru.com/post/list/drawing/1",
-    "#category": ("shimmie2", "giantessbooru", "tag"),
-    "#class"   : shimmie2.Shimmie2TagExtractor,
-},
-
-{
-    "#url"     : "https://sizechangebooru.com/index.php?q=/post/view/41",
-    "#category": ("shimmie2", "giantessbooru", "post"),
-    "#class"   : shimmie2.Shimmie2PostExtractor,
-    "#results"     : "https://sizechangebooru.com/index.php?q=/image/41.jpg",
-    "#sha1_content": "79115ed309d1f4e82e7bead6948760e889139c91",
-
-    "extension": "jpg",
-    "file_url" : "https://sizechangebooru.com/index.php?q=/image/41.jpg",
-    "filename" : "41",
-    "height"   : 0,
-    "id"       : 41,
-    "md5"      : "",
-    "size"     : 0,
-    "tags"     : "anime bare_midriff color drawing gentle giantess karbo looking_at_tinies negeyari outdoors smiling snake_girl white_hair",
-    "width"    : 1387,
-},
-
-{
-    "#url"     : "https://giantessbooru.com/index.php?q=/post/view/41",
-    "#category": ("shimmie2", "giantessbooru", "post"),
-    "#class"   : shimmie2.Shimmie2PostExtractor,
-},
-
-{
-    "#url"     : "https://giantessbooru.com/post/view/41",
-    "#category": ("shimmie2", "giantessbooru", "post"),
-    "#class"   : shimmie2.Shimmie2PostExtractor,
-},
-
-)