[Danbooru] add 'media-asset' extractor (#8580)

docs/supportedsites.md

@@ -1300,25 +1300,25 @@ Consider all listed sites to potentially be NSFW.
 <tr id="danbooru" title="danbooru">
     <td>Danbooru</td>
     <td>https://danbooru.donmai.us/</td>
-    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Media Assets, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 <tr id="atfbooru" title="atfbooru">
     <td>ATFBooru</td>
     <td>https://booru.allthefallen.moe/</td>
-    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Media Assets, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 <tr id="aibooru" title="aibooru">
     <td>AIBooru</td>
     <td>https://aibooru.online/</td>
-    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Media Assets, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 <tr id="booruvar" title="booruvar">
     <td>Booruvar</td>
     <td>https://booru.borvar.art/</td>
-    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Media Assets, Pools, Popular Images, Posts, Random Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 

gallery_dl/extractor/danbooru.py

@@ -344,6 +344,32 @@ class DanbooruPostExtractor(DanbooruExtractor):
         return (post,)
 
 
+class DanbooruMediaassetExtractor(DanbooruExtractor):
+    """Extractor for a danbooru media asset"""
+    subcategory = "media-asset"
+    filename_fmt = "{category}_ma{id}_{filename}.{extension}"
+    archive_fmt = "m{id}"
+    pattern = rf"{BASE_PATTERN}/media_assets/(\d+)"
+    example = "https://danbooru.donmai.us/media_assets/12345"
+
+    def posts(self):
+        url = f"{self.root}/media_assets/{self.groups[-1]}.json"
+        asset = self.request_json(url)
+
+        asset["file_url"] = asset["variants"][-1]["url"]
+        asset["tag_string"] = \
+            asset["tag_string_artist"] = \
+            asset["tag_string_character"] = \
+            asset["tag_string_copyright"] = \
+            asset["tag_string_general"] = \
+            asset["tag_string_meta"] = ""
+
+        if self.includes:
+            params = {"only": self.includes}
+            asset.update(self.request_json(url, params=params))
+        return (asset,)
+
+
 class DanbooruPopularExtractor(DanbooruExtractor):
     """Extractor for popular images from danbooru"""
     subcategory = "popular"

test/results/danbooru.py

@@ -402,4 +402,78 @@ __tests__ = (
     "search_tags": "",
 },
 
+{
+    "#url"     : "https://danbooru.donmai.us/media_assets/35394309",
+    "#category": ("Danbooru", "danbooru", "media-asset"),
+    "#class"   : danbooru.DanbooruMediaassetExtractor,
+    "#results" : "https://cdn.donmai.us/original/4a/ae/4aae24ce57d92c1167910ab068c7514b.jpg",
+
+    "created_at"     : "2025-11-06T06:42:00.070-05:00",
+    "date"           : "dt:2025-11-06 11:42:00",
+    "duration"       : None,
+    "extension"      : "jpg",
+    "file_ext"       : "jpg",
+    "file_key"       : "PyWKmcv0U",
+    "file_size"      : 416727,
+    "file_url"       : "https://cdn.donmai.us/original/4a/ae/4aae24ce57d92c1167910ab068c7514b.jpg",
+    "filename"       : "4aae24ce57d92c1167910ab068c7514b",
+    "id"             : 35394309,
+    "image_height"   : 2132,
+    "image_width"    : 1867,
+    "is_public"      : True,
+    "md5"            : "4aae24ce57d92c1167910ab068c7514b",
+    "pixel_hash"     : "ecfbad5b0bf98b1e8faeef908aba8613",
+    "status"         : "active",
+    "tag_string"     : "",
+    "tag_string_artist": "",
+    "tag_string_character": "",
+    "tag_string_copyright": "",
+    "tag_string_general": "",
+    "tag_string_meta": "",
+    "tags"           : (),
+    "tags_artist"    : (),
+    "tags_character" : (),
+    "tags_copyright" : (),
+    "tags_general"   : (),
+    "tags_meta"      : (),
+    "updated_at"     : "2025-11-06T06:42:01.465-05:00",
+    "variants"       : [
+        {
+            "file_ext": "jpg",
+            "height"  : 180,
+            "type"    : "180x180",
+            "url"     : "https://cdn.donmai.us/180x180/4a/ae/4aae24ce57d92c1167910ab068c7514b.jpg",
+            "width"   : 158,
+        },
+        {
+            "file_ext": "jpg",
+            "height"  : 360,
+            "type"    : "360x360",
+            "url"     : "https://cdn.donmai.us/360x360/4a/ae/4aae24ce57d92c1167910ab068c7514b.jpg",
+            "width"   : 315,
+        },
+        {
+            "file_ext": "webp",
+            "height"  : 720,
+            "type"    : "720x720",
+            "url"     : "https://cdn.donmai.us/720x720/4a/ae/4aae24ce57d92c1167910ab068c7514b.webp",
+            "width"   : 631,
+        },
+        {
+            "file_ext": "jpg",
+            "height"  : 971,
+            "type"    : "sample",
+            "url"     : "https://cdn.donmai.us/sample/4a/ae/sample-4aae24ce57d92c1167910ab068c7514b.jpg",
+            "width"   : 850,
+        },
+        {
+            "file_ext": "jpg",
+            "height"  : 2132,
+            "type"    : "original",
+            "url"     : "https://cdn.donmai.us/original/4a/ae/4aae24ce57d92c1167910ab068c7514b.jpg",
+            "width"   : 1867,
+        },
+    ],
+},
+
 )