diff --git a/app/logical/artist_finder.rb b/app/logical/artist_finder.rb
index a91d0f5e1..306f05fc9 100644
--- a/app/logical/artist_finder.rb
+++ b/app/logical/artist_finder.rb
@@ -62,6 +62,8 @@ module ArtistFinder
     "monappy.jp",
     "monappy.jp/u", # https://monappy.jp/u/abara_bone
     "mstdn.jp", # https://mstdn.jp/@oneb
+    "www.newgrounds.com", # https://jessxjess.newgrounds.com/
+    "newgrounds.com/art/view/", # https://www.newgrounds.com/art/view/jessxjess/avatar-korra
     "nicoseiga.jp",
     "nicoseiga.jp/priv", # http://lohas.nicoseiga.jp/priv/2017365fb6cfbdf47ad26c7b6039feb218c5e2d4/1498430264/6820259
     "nicovideo.jp",
diff --git a/app/logical/sources/strategies.rb b/app/logical/sources/strategies.rb
index 92232e59e..05a0ef2d5 100644
--- a/app/logical/sources/strategies.rb
+++ b/app/logical/sources/strategies.rb
@@ -13,7 +13,8 @@ module Sources
         Strategies::Pawoo,
         Strategies::Moebooru,
         Strategies::HentaiFoundry,
-        Strategies::Weibo
+        Strategies::Weibo,
+        Strategies::Newgrounds
       ]
     end
 
diff --git a/app/logical/sources/strategies/newgrounds.rb b/app/logical/sources/strategies/newgrounds.rb
new file mode 100644
index 000000000..69d5d737a
--- /dev/null
+++ b/app/logical/sources/strategies/newgrounds.rb
@@ -0,0 +1,112 @@
+# Image Urls
+# * https://art.ngfiles.com/images/1254000/1254722_natthelich_pandora.jpg
+# * https://art.ngfiles.com/images/1033000/1033622_natthelich_fire-emblem-marth-plus-progress-pic.png?f1569487181
+# * https://art.ngfiles.com/comments/57000/iu_57615_7115981.jpg
+#
+# Page URLs
+# * https://www.newgrounds.com/art/view/puddbytes/costanza-at-bat
+# * https://www.newgrounds.com/art/view/natthelich/fire-emblem-marth-plus-progress-pic (multiple)
+#
+#
+# Profile URLs
+# * https://natthelich.newgrounds.com/
+
+module Sources
+  module Strategies
+    class Newgrounds < Base
+      IMAGE_URL   = %r{https?://art\.ngfiles\.com/images/\d+/\d+_(?<user_name>[0-9a-z-]+)_(?<illust_title>[0-9a-z-]+)\.\w+}i
+      COMMENT_URL = %r{https?://art\.ngfiles\.com/comments/\d+/\w+\.\w+}i
+
+      PAGE_URL    = %r{https?://(?:www\.)?newgrounds\.com/art/view/(?<user_name>[0-9a-z-]+)/(?<illust_title>[0-9a-z-]+)(?:\?.*)?}i
+
+      PROFILE_URL = %r{https?://(?<artist_name>(?!www)[0-9a-z-]+)\.newgrounds\.com(?:/.*)?}i
+
+      def domains
+        ["newgrounds.com", "ngfiles.com"]
+      end
+
+      def site_name
+        "NewGrounds"
+      end
+
+      def image_urls
+        if url =~ COMMENT_URL || url =~ IMAGE_URL
+          [url]
+        else
+          urls = []
+
+          urls += page&.css(".image img").to_a.map { |img| img["src"] }
+          urls += page&.css("#author_comments img[data-user-image='1']").to_a.map { |img| img["data-smartload-src"] || img["src"] }
+
+          urls.compact
+        end
+      end
+
+      def page_url
+        return nil if illust_title.blank? || user_name.blank?
+
+        "https://www.newgrounds.com/art/view/#{user_name}/#{illust_title}"
+      end
+
+      def page
+        return nil if page_url.blank?
+        doc = Danbooru::Http.cache(1.minute).get(page_url)
+
+        return if doc.code == 404
+
+        Nokogiri::HTML(doc.body)
+      end
+      memoize :page
+
+      def tags
+        page&.css("#sidestats .tags a").to_a.map do |tag|
+          [tag.text, "https://www.newgrounds.com/search/conduct/art?match=tags&tags=" + tag.text]
+        end
+      end
+
+      def normalize_tag(tag)
+        tag = tag.tr("-", "_")
+        super(tag)
+      end
+
+      def artist_name
+        name = page&.css(".item-user .item-details h4 a")&.text&.strip || user_name
+        name&.downcase
+      end
+
+      def other_names
+        [artist_name, user_name].compact.uniq
+      end
+
+      def profile_url
+        # user names are not mutable, artist names are.
+        # However we need the latest name for normalization
+        "https://#{artist_name}.newgrounds.com"
+      end
+
+      def artist_commentary_title
+        page&.css(".pod-head > [itemprop='name']")&.text
+      end
+
+      def artist_commentary_desc
+        page&.css("#author_comments")&.to_html
+      end
+
+      def dtext_artist_commentary_desc
+        DText.from_html(artist_commentary_desc)
+      end
+
+      def normalize_for_source
+        page_url
+      end
+
+      def user_name
+        urls.map { |u| url[PROFILE_URL, :artist_name] || u[IMAGE_URL, :user_name] || u[PAGE_URL, :user_name] }.compact.first
+      end
+
+      def illust_title
+        urls.map { |u| u[IMAGE_URL, :illust_title] || u[PAGE_URL, :illust_title] }.compact.first
+      end
+    end
+  end
+end
diff --git a/test/unit/sources/newgrounds_test.rb b/test/unit/sources/newgrounds_test.rb
new file mode 100644
index 000000000..8c7c57fcb
--- /dev/null
+++ b/test/unit/sources/newgrounds_test.rb
@@ -0,0 +1,112 @@
+require 'test_helper'
+
+module Sources
+  class NewGroundsTest < ActiveSupport::TestCase
+    context "The source for a newgrounds picture" do
+      setup do
+        @url = "https://www.newgrounds.com/art/view/natthelich/fire-emblem-marth-plus-progress-pic"
+        @comment = "https://art.ngfiles.com/comments/57000/iu_57615_7115981.jpg"
+        @image_1 = Sources::Strategies.find(@url)
+        @image_2 = Sources::Strategies.find("https://art.ngfiles.com/images/1033000/1033622_natthelich_fire-emblem-marth-plus-progress-pic.png?f1569487181")
+        @image_3 = Sources::Strategies.find(@comment, @url)
+      end
+
+      should "get the artist name" do
+        assert_equal("natthelich", @image_1.artist_name)
+        assert_equal("natthelich", @image_2.artist_name)
+        assert_equal("natthelich", @image_3.artist_name)
+      end
+
+      should "get the artist commentary title" do
+        assert_equal("Fire Emblem - Marth (plus progress pic)", @image_1.artist_commentary_title)
+        assert_equal("Fire Emblem - Marth (plus progress pic)", @image_2.artist_commentary_title)
+        assert_equal("Fire Emblem - Marth (plus progress pic)", @image_3.artist_commentary_title)
+      end
+
+      should "get profile url" do
+        assert_equal("https://natthelich.newgrounds.com", @image_1.profile_url)
+        assert_equal("https://natthelich.newgrounds.com", @image_2.profile_url)
+        assert_equal("https://natthelich.newgrounds.com", @image_3.profile_url)
+      end
+
+      should "get the image urls" do
+        assert_match(%r{https?://art\.ngfiles\.com/images/1033000/1033622_natthelich_fire-emblem-marth-plus-progress-pic\.png(?:\?\w+)?}i, @image_1.image_url)
+        assert_includes(@image_1.image_urls, @comment)
+
+        assert_match(%r{https?://art\.ngfiles\.com/images/1033000/1033622_natthelich_fire-emblem-marth-plus-progress-pic\.png(?:\?\w+)?}i, @image_2.image_url)
+        assert_equal(@comment, @image_3.image_url)
+      end
+
+      should "get the canonical url" do
+        assert_equal(@url, @image_1.canonical_url)
+        assert_equal(@url, @image_2.canonical_url)
+        assert_equal(@url, @image_3.canonical_url)
+      end
+
+      should "download an image" do
+        assert_downloaded(630365, @image_1.image_url)
+        assert_downloaded(630365, @image_2.image_url)
+        assert_downloaded(129033, @image_3.image_url)
+      end
+
+      should "get the tags" do
+        tags = [
+          %w[fire-emblem https://www.newgrounds.com/search/conduct/art?match=tags&tags=fire-emblem],
+          %w[marth       https://www.newgrounds.com/search/conduct/art?match=tags&tags=marth      ]
+        ]
+        assert_equal(tags, @image_1.tags)
+        assert_equal(tags, @image_2.tags)
+        assert_equal(tags, @image_3.tags)
+      end
+
+      should "find the right artist" do
+        artist_1 = FactoryBot.create(:artist, name: "natthelich1", url_string: "https://natthelich.newgrounds.com/art")
+        artist_2 = FactoryBot.create(:artist, name: "natthelich2", url_string: "https://www.newgrounds.com/art/view/natthelich/fire-emblem-marth-plus-progress-pic")
+        artist_3 = FactoryBot.create(:artist, name: "bad_artist", url_string: "https://www.newgrounds.com/art")
+
+        assert_equal([artist_1, artist_2], @image_1.artists)
+        assert_equal([artist_1, artist_2], @image_2.artists)
+        assert_equal([artist_1, artist_2], @image_3.artists)
+
+        assert_not_equal([artist_3], @image_1.artists)
+      end
+    end
+
+    context "A deleted or not existing picture" do
+      setup do
+        @fake_1 = Sources::Strategies.find("https://www.newgrounds.com/art/view/ThisUser/DoesNotExist")
+        @artist_1 = FactoryBot.create(:artist, name: "thisuser", url_string: "https://thisuser.newgrounds.com")
+
+        @fake_2 = Sources::Strategies.find("https://www.newgrounds.com/art/view/natthelich/nopicture")
+        @artist_2 = FactoryBot.create(:artist, name: "natthelich", url_string: "https://natthelich.newgrounds.com")
+
+        @fake_3 = Sources::Strategies.find("https://www.newgrounds.com/art/view/theolebrave/sensitive-pochaco")
+        @artist_3 = FactoryBot.create(:artist, name: "taffytoad", url_string: "https://taffytoad.newgrounds.com")
+      end
+
+      should "still find the artist name" do
+        assert_equal("thisuser", @fake_1.artist_name)
+        assert_equal([@artist_1], @fake_1.artists)
+        assert_equal("https://thisuser.newgrounds.com", @fake_1.profile_url)
+
+        assert_equal("natthelich", @fake_2.artist_name)
+        assert_equal([@artist_2], @fake_2.artists)
+
+        assert_equal([@artist_3], @fake_3.artists)
+      end
+    end
+
+    context "normalizing for source" do
+      should "normalize correctly" do
+        source = "https://art.ngfiles.com/images/1033000/1033622_natthelich_fire-emblem-marth-plus-progress-pic.png?f1569487181"
+
+        assert_equal("https://www.newgrounds.com/art/view/natthelich/fire-emblem-marth-plus-progress-pic", Sources::Strategies.normalize_source(source))
+      end
+
+      should "avoid normalizing unnormalizable urls" do
+        bad_source = "https://art.ngfiles.com/comments/57000/iu_57615_7115981.jpg"
+        assert_equal(bad_source, Sources::Strategies.normalize_source(bad_source))
+      end
+    end
+  end
+end