diff --git a/app/logical/source/url.rb b/app/logical/source/url.rb
index a054dbe53..9316d9c56 100644
--- a/app/logical/source/url.rb
+++ b/app/logical/source/url.rb
@@ -3,6 +3,9 @@
 # A Source::URL is a URL from a source site, such as Twitter, Pixiv, etc. Each site has a
 # subclass responsible for parsing and extracting information from URLs for that site.
 #
+# Sources::Strategies are the main user of Source::URLs. Each Source::URL subclass usually
+# has a corresponding strategy for extracting data from that site.
+#
 # To add a new site, create a subclass of Source::URL and implement `#match?` to define
 # which URLs belong to the site, and `#parse` to parse and extract information from the URL.
 #
@@ -15,6 +18,7 @@
 #   url.status_id        # => "1496123903290314755"
 #   url.twitter_username # => "yasunavert"
 #
+# @see Danbooru::URL
 module Source
   class URL < Danbooru::URL
     SUBCLASSES = [
@@ -68,9 +72,43 @@ module Source
       raise NotImplementedError
     end
 
-    # @return [String, nil] The name of the site this URL belongs to, or possibly nil if unknown.
+    # The name of the site this URL belongs to.
+    #
+    # @return [String]
     def site_name
-      self.class.name.demodulize.titleize
+      # XXX should go in dedicated subclasses.
+      case host
+      when /ask\.fm\z/i
+        "Ask.fm"
+      when /bcy\.net\z/i
+        "BCY"
+      when /booth\.pm\z/i
+        "Booth.pm"
+      when /circle\.ms\z/i
+        "Circle.ms"
+      when /dlsite\.(com|net)\z/i
+        "DLSite"
+      when /doujinshi\.mugimugi\.org\z/i
+        "Doujinshi.org"
+      when /fc2\.com\z/i
+        "FC2"
+      when /ko-fi\.com\z/i
+        "Ko-fi"
+      when /mixi\.jp\z/i
+        "Mixi.jp"
+      when /piapro\.jp\z/i
+        "Piapro.jp"
+      when /sakura\.ne\.jp\z/i
+        "Sakura.ne.jp"
+      else
+        if self.class == Source::URL
+          # "www.melonbooks.co.jp" => "Melonbooks"
+          parsed_domain.sld.titleize
+        else
+          # "Source::URL::NicoSeiga" => "Nico Seiga"
+          self.class.name.demodulize.titleize
+        end
+      end
     end
 
     protected def initialize(...)
diff --git a/app/logical/sources/strategies/art_station.rb b/app/logical/sources/strategies/art_station.rb
index 2eb35f5ef..4ff5f165e 100644
--- a/app/logical/sources/strategies/art_station.rb
+++ b/app/logical/sources/strategies/art_station.rb
@@ -7,10 +7,6 @@ module Sources::Strategies
       Source::URL::ArtStation === parsed_url
     end
 
-    def site_name
-      parsed_url.site_name
-    end
-
     def image_urls
       @image_urls ||= image_urls_sub.map { |asset| asset_url(asset, :largest) }
     end
diff --git a/app/logical/sources/strategies/base.rb b/app/logical/sources/strategies/base.rb
index 5aecd8761..9f7383ba0 100644
--- a/app/logical/sources/strategies/base.rb
+++ b/app/logical/sources/strategies/base.rb
@@ -22,6 +22,7 @@ module Sources
       DOWNLOAD_TIMEOUT = 60
 
       attr_reader :url, :referer_url, :parsed_url, :parsed_referer
+      delegate :site_name, to: :parsed_url
 
       # Should return true if all prerequisites for using the strategy are met.
       # Return false if the strategy requires api keys that have not been configured.
@@ -53,74 +54,6 @@ module Sources
         false
       end
 
-      def site_name
-        host = parsed_url&.host
-
-        # XXX should go in dedicated strategies.
-        case host
-        when /amazon\.(com|jp|co\.jp)\z/i
-          "Amazon"
-        when /ask\.fm\z/i
-          "Ask.fm"
-        when /bcy\.net\z/i
-          "BCY"
-        when /booth\.pm\z/i
-          "Booth.pm"
-        when /circle\.ms\z/i
-          "Circle.ms"
-        when /dlsite\.(com|net)\z/i
-          "DLSite"
-        when /doujinshi\.mugimugi\.org\z/i, /doujinshi\.org\z/i
-          "Doujinshi.org"
-        when /erogamescape\.dyndns\.org\z/i
-          "Erogamescape"
-        when /facebook\.com\z/i
-          "Facebook"
-        when /fc2\.com\z/i
-          "FC2"
-        when /gumroad\.com\z/i
-          "Gumroad"
-        when /instagram\.com\z/i
-          "Instagram"
-        when /ko-fi\.com\z/i
-          "Ko-fi"
-        when /livedoor\.(jp|com)\z/i
-          "Livedoor"
-        when /mangaupdates\.com\z/i
-          "Mangaupdates"
-        when /melonbooks\.co\.jp\z/i
-          "Melonbooks"
-        when /mihuashi\.com\z/i
-          "Mihuashi"
-        when /mixi\.jp\z/i
-          "Mixi.jp"
-        when /patreon\.com\z/i
-          "Patreon"
-        when /piapro\.jp\z/i
-          "Piapro.jp"
-        when /picarto\.tv\z/i
-          "Picarto"
-        when /privatter\.net\z/i
-          "Privatter"
-        when /sakura\.ne\.jp\z/i
-          "Sakura.ne.jp"
-        when /stickam\.jp\z/i
-          "Stickam"
-        when /tinami\.com\z/i
-          "Tinami"
-        when /toranoana\.(jp|shop)\z/i
-          "Toranoana"
-        when /twitch\.tv\z/i
-          "Twitch"
-        when /wikipedia\.org\z/i
-          "Wikipedia"
-        when /youtube\.com\z/i
-          "Youtube"
-        else
-          host
-        end
-      end
-
       # Whatever <tt>url</tt> is, this method should return the direct links
       # to the canonical binary files. It should not be an HTML page. It should
       # be a list of JPEG, PNG, GIF, WEBM, MP4, ZIP, etc. It is what the
diff --git a/app/logical/sources/strategies/deviant_art.rb b/app/logical/sources/strategies/deviant_art.rb
index f1a13f5a1..364276b1d 100644
--- a/app/logical/sources/strategies/deviant_art.rb
+++ b/app/logical/sources/strategies/deviant_art.rb
@@ -11,10 +11,6 @@ module Sources
         Source::URL::DeviantArt === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         [image_url]
       end
diff --git a/app/logical/sources/strategies/fanbox.rb b/app/logical/sources/strategies/fanbox.rb
index ca7f65563..7ae584b37 100644
--- a/app/logical/sources/strategies/fanbox.rb
+++ b/app/logical/sources/strategies/fanbox.rb
@@ -8,10 +8,6 @@ module Sources
         Source::URL::Fanbox === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if parsed_url.image_url?
           [parsed_url.full_image_url]
diff --git a/app/logical/sources/strategies/fantia.rb b/app/logical/sources/strategies/fantia.rb
index 824ce9ae2..5c05ac6ce 100644
--- a/app/logical/sources/strategies/fantia.rb
+++ b/app/logical/sources/strategies/fantia.rb
@@ -10,10 +10,6 @@ module Sources::Strategies
       Source::URL::Fantia === parsed_url
     end
 
-    def site_name
-      parsed_url.site_name
-    end
-
     def image_urls
       return [parsed_url.full_image_url] if parsed_url.image_url?
       return [image_from_downloadable(parsed_url)] if parsed_url.downloadable?
diff --git a/app/logical/sources/strategies/foundation.rb b/app/logical/sources/strategies/foundation.rb
index f239640c5..2d1ba0eb7 100644
--- a/app/logical/sources/strategies/foundation.rb
+++ b/app/logical/sources/strategies/foundation.rb
@@ -8,10 +8,6 @@ module Sources
         parsed_url&.site_name == "Foundation"
       end
 
-      def site_name
-        "Foundation"
-      end
-
       def image_urls
         if parsed_url.full_image_url.present?
           [parsed_url.full_image_url]
diff --git a/app/logical/sources/strategies/hentai_foundry.rb b/app/logical/sources/strategies/hentai_foundry.rb
index 4e39b4624..f3e962e5c 100644
--- a/app/logical/sources/strategies/hentai_foundry.rb
+++ b/app/logical/sources/strategies/hentai_foundry.rb
@@ -8,10 +8,6 @@ module Sources
         parsed_url&.site_name == "Hentai Foundry"
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         image = page&.search("#picBox img")
 
diff --git a/app/logical/sources/strategies/lofter.rb b/app/logical/sources/strategies/lofter.rb
index bc9e8f0e4..77e1baf86 100644
--- a/app/logical/sources/strategies/lofter.rb
+++ b/app/logical/sources/strategies/lofter.rb
@@ -8,10 +8,6 @@ module Sources
         parsed_url&.site_name == "Lofter"
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if parsed_url.image_url?
           [parsed_url.full_image_url]
diff --git a/app/logical/sources/strategies/mastodon.rb b/app/logical/sources/strategies/mastodon.rb
index 6325d605b..e6c813856 100644
--- a/app/logical/sources/strategies/mastodon.rb
+++ b/app/logical/sources/strategies/mastodon.rb
@@ -7,10 +7,6 @@ module Sources::Strategies
       Source::URL::Mastodon === parsed_url
     end
 
-    def site_name
-      parsed_url.site_name
-    end
-
     def domain
       case site_name
       when "Pawoo" then "pawoo.net"
diff --git a/app/logical/sources/strategies/newgrounds.rb b/app/logical/sources/strategies/newgrounds.rb
index 422c1ac40..d985272fc 100644
--- a/app/logical/sources/strategies/newgrounds.rb
+++ b/app/logical/sources/strategies/newgrounds.rb
@@ -8,10 +8,6 @@ module Sources
         parsed_url&.site_name == "Newgrounds"
       end
 
-      def site_name
-        "Newgrounds"
-      end
-
       def image_urls
         if parsed_url.image_url?
           [url]
diff --git a/app/logical/sources/strategies/nico_seiga.rb b/app/logical/sources/strategies/nico_seiga.rb
index 5a0324c7a..c4d6dc284 100644
--- a/app/logical/sources/strategies/nico_seiga.rb
+++ b/app/logical/sources/strategies/nico_seiga.rb
@@ -12,10 +12,6 @@ module Sources
         Source::URL::NicoSeiga === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if image_id.present?
           [image_url_for("https://seiga.nicovideo.jp/image/source/#{image_id}")]
diff --git a/app/logical/sources/strategies/nijie.rb b/app/logical/sources/strategies/nijie.rb
index 47137e27b..57e7690bd 100644
--- a/app/logical/sources/strategies/nijie.rb
+++ b/app/logical/sources/strategies/nijie.rb
@@ -12,10 +12,6 @@ module Sources
         Source::URL::Nijie === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if parsed_url.image_url?
           [parsed_url.full_image_url]
diff --git a/app/logical/sources/strategies/pixiv.rb b/app/logical/sources/strategies/pixiv.rb
index 628e31a94..0cffcccb8 100644
--- a/app/logical/sources/strategies/pixiv.rb
+++ b/app/logical/sources/strategies/pixiv.rb
@@ -36,10 +36,6 @@ module Sources
         Source::URL::Pixiv === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if is_ugoira?
           [api_ugoira[:originalSrc]]
diff --git a/app/logical/sources/strategies/pixiv_sketch.rb b/app/logical/sources/strategies/pixiv_sketch.rb
index 2c7077d51..5fe19eb51 100644
--- a/app/logical/sources/strategies/pixiv_sketch.rb
+++ b/app/logical/sources/strategies/pixiv_sketch.rb
@@ -8,10 +8,6 @@ module Sources
         Source::URL::PixivSketch === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if parsed_url.image_url?
           [parsed_url.full_image_url]
diff --git a/app/logical/sources/strategies/plurk.rb b/app/logical/sources/strategies/plurk.rb
index f5340ea61..2c3de7380 100644
--- a/app/logical/sources/strategies/plurk.rb
+++ b/app/logical/sources/strategies/plurk.rb
@@ -8,10 +8,6 @@ module Sources
         Source::URL::Plurk === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         # * Posts can have up to 10 images.
         # * Artists commonly post extra images by replying to their own post.
diff --git a/app/logical/sources/strategies/skeb.rb b/app/logical/sources/strategies/skeb.rb
index a5518803e..4c17b25e0 100644
--- a/app/logical/sources/strategies/skeb.rb
+++ b/app/logical/sources/strategies/skeb.rb
@@ -8,10 +8,6 @@ module Sources
         parsed_url&.site_name == "Skeb"
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if parsed_url.image_url?
           [url]
diff --git a/app/logical/sources/strategies/tumblr.rb b/app/logical/sources/strategies/tumblr.rb
index dbd3c9841..55dfd0fdd 100644
--- a/app/logical/sources/strategies/tumblr.rb
+++ b/app/logical/sources/strategies/tumblr.rb
@@ -11,10 +11,6 @@ module Sources::Strategies
       Source::URL::Tumblr === parsed_url
     end
 
-    def site_name
-      parsed_url.site_name
-    end
-
     def image_urls
       return [find_largest(parsed_url)].compact if parsed_url.asset_url?
 
diff --git a/app/logical/sources/strategies/twit_pic.rb b/app/logical/sources/strategies/twit_pic.rb
index eef260b7d..1cfad1dea 100644
--- a/app/logical/sources/strategies/twit_pic.rb
+++ b/app/logical/sources/strategies/twit_pic.rb
@@ -7,10 +7,6 @@ module Sources::Strategies
       parsed_url&.site_name == "TwitPic"
     end
 
-    def site_name
-      parsed_url.site_name
-    end
-
     def normalize_for_source
       parsed_url.page_url || url
     end
diff --git a/app/logical/sources/strategies/twitter.rb b/app/logical/sources/strategies/twitter.rb
index eac5e9841..374f860c7 100644
--- a/app/logical/sources/strategies/twitter.rb
+++ b/app/logical/sources/strategies/twitter.rb
@@ -27,10 +27,6 @@ module Sources::Strategies
       parsed_url&.site_name == "Twitter"
     end
 
-    def site_name
-      parsed_url.site_name
-    end
-
     def image_urls
       # https://pbs.twimg.com/media/EBGbJe_U8AA4Ekb.jpg:orig
       if parsed_url.image_url?
diff --git a/app/logical/sources/strategies/weibo.rb b/app/logical/sources/strategies/weibo.rb
index c40979a0f..e88858a74 100644
--- a/app/logical/sources/strategies/weibo.rb
+++ b/app/logical/sources/strategies/weibo.rb
@@ -9,10 +9,6 @@ module Sources
         Source::URL::Weibo === parsed_url
       end
 
-      def site_name
-        parsed_url.site_name
-      end
-
       def image_urls
         if parsed_url.image_url?
           [parsed_url.full_image_url]
diff --git a/app/models/artist_url.rb b/app/models/artist_url.rb
index 6a14df295..dbad3882c 100644
--- a/app/models/artist_url.rb
+++ b/app/models/artist_url.rb
@@ -72,12 +72,11 @@ class ArtistURL < ApplicationRecord
   end
 
   def domain
-    Danbooru::URL.parse(normalized_url)&.domain.to_s
+    parsed_url&.domain.to_s
   end
 
   def site_name
-    source = Sources::Strategies.find(normalized_url)
-    source.site_name
+    parsed_url&.site_name.to_s
   end
 
   # A secondary URL is an artist URL that we don't normally want to display,
@@ -123,9 +122,14 @@ class ArtistURL < ApplicationRecord
 
   def url=(url)
     super(url)
+    @parsed_url = Source::URL.parse(url)
     self.normalized_url = self.class.normalize_normalized_url(self.url)
   end
 
+  def parsed_url
+    @parsed_url ||= Source::URL.parse(url)
+  end
+
   def to_s
     if is_active?
       url
diff --git a/test/unit/sources/null_test.rb b/test/unit/sources/null_test.rb
index 94c0f2c60..1f9a75a94 100644
--- a/test/unit/sources/null_test.rb
+++ b/test/unit/sources/null_test.rb
@@ -12,7 +12,6 @@ module Sources
       end
 
       should "find the metadata" do
-        assert_equal("oremuhax.x0.com", @site.site_name)
         assert_equal(["http://oremuhax.x0.com/yoro1603.jpg"], @site.image_urls)
         assert_equal("http://oremuhax.x0.com/yoro1603.jpg", @site.canonical_url)
         assert_nil(@site.artist_name)