diff --git a/lib/pleroma/application.ex b/lib/pleroma/application.ex
index cb3e6b69b..ad2797209 100644
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@@ -63,6 +63,17 @@ def start(_type, _args) do
           ],
           id: :cachex_object
         ),
+        worker(
+          Cachex,
+          [
+            :rich_media_cache,
+            [
+              default_ttl: :timer.minutes(120),
+              limit: 5000
+            ]
+          ],
+          id: :cachex_rich_media
+        ),
         worker(
           Cachex,
           [
diff --git a/lib/pleroma/html.ex b/lib/pleroma/html.ex
index 71db516e6..0c5b0f03f 100644
--- a/lib/pleroma/html.ex
+++ b/lib/pleroma/html.ex
@@ -28,13 +28,18 @@ def filter_tags(html, scrubber), do: Scrubber.scrub(html, scrubber)
   def filter_tags(html), do: filter_tags(html, nil)
   def strip_tags(html), do: Scrubber.scrub(html, Scrubber.StripTags)
 
-  def get_cached_scrubbed_html_for_object(content, scrubbers, object) do
-    key = "#{generate_scrubber_signature(scrubbers)}|#{object.id}"
+  def get_cached_scrubbed_html_for_object(content, scrubbers, object, module) do
+    key = "#{module}#{generate_scrubber_signature(scrubbers)}|#{object.id}"
     Cachex.fetch!(:scrubber_cache, key, fn _key -> ensure_scrubbed_html(content, scrubbers) end)
   end
 
-  def get_cached_stripped_html_for_object(content, object) do
-    get_cached_scrubbed_html_for_object(content, HtmlSanitizeEx.Scrubber.StripTags, object)
+  def get_cached_stripped_html_for_object(content, object, module) do
+    get_cached_scrubbed_html_for_object(
+      content,
+      HtmlSanitizeEx.Scrubber.StripTags,
+      object,
+      module
+    )
   end
 
   def ensure_scrubbed_html(
@@ -50,15 +55,7 @@ defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
 
   defp generate_scrubber_signature(scrubbers) do
     Enum.reduce(scrubbers, "", fn scrubber, signature ->
-      # If a scrubber does not have a version(e.g HtmlSanitizeEx.Scrubber.StripTags) it is assumed it is always 0)
-      version =
-        if Kernel.function_exported?(scrubber, :version, 0) do
-          scrubber.version
-        else
-          0
-        end
-
-      "#{signature}#{to_string(scrubber)}#{version}"
+      "#{signature}#{to_string(scrubber)}"
     end)
   end
 end
@@ -76,10 +73,6 @@ defmodule Pleroma.HTML.Scrubber.TwitterText do
   require HtmlSanitizeEx.Scrubber.Meta
   alias HtmlSanitizeEx.Scrubber.Meta
 
-  def version do
-    0
-  end
-
   Meta.remove_cdata_sections_before_scrub()
   Meta.strip_comments()
 
@@ -118,10 +111,6 @@ defmodule Pleroma.HTML.Scrubber.Default do
   require HtmlSanitizeEx.Scrubber.Meta
   alias HtmlSanitizeEx.Scrubber.Meta
 
-  def version do
-    0
-  end
-
   @markup Application.get_env(:pleroma, :markup)
   @uri_schemes Application.get_env(:pleroma, :uri_schemes, [])
   @valid_schemes Keyword.get(@uri_schemes, :valid_schemes, [])
@@ -199,10 +188,6 @@ defmodule Pleroma.HTML.Transform.MediaProxy do
 
   alias Pleroma.Web.MediaProxy
 
-  def version do
-    0
-  end
-
   def before_scrub(html), do: html
 
   def scrub_attribute("img", {"src", "http" <> target}) do
diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
index fc7972eaf..a3f736fee 100644
--- a/lib/pleroma/web/activity_pub/activity_pub_controller.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
@@ -165,9 +165,39 @@ def read_inbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = par
     end
   end
 
+  def handle_user_activity(user, %{"type" => "Create"} = params) do
+    object =
+      params["object"]
+      |> Map.merge(Map.take(params, ["to", "cc"]))
+      |> Map.put("attributedTo", user.ap_id())
+      |> Transmogrifier.fix_object()
+
+    ActivityPub.create(%{
+      to: params["to"],
+      actor: user,
+      context: object["context"],
+      object: object,
+      additional: Map.take(params, ["cc"])
+    })
+  end
+
+  def handle_user_activity(user, %{"type" => "Delete"} = params) do
+    with %Object{} = object <- Object.normalize(params["object"]),
+         true <- user.info.is_moderator || user.ap_id == object.data["actor"],
+         {:ok, delete} <- ActivityPub.delete(object) do
+      {:ok, delete}
+    else
+      _ -> {:error, "Can't delete object"}
+    end
+  end
+
+  def handle_user_activity(_, _) do
+    {:error, "Unhandled activity type"}
+  end
+
   def update_outbox(
         %{assigns: %{user: user}} = conn,
-        %{"nickname" => nickname, "type" => "Create"} = params
+        %{"nickname" => nickname} = params
       ) do
     if nickname == user.nickname do
       actor = user.ap_id()
@@ -178,24 +208,16 @@ def update_outbox(
         |> Map.put("actor", actor)
         |> Transmogrifier.fix_addressing()
 
-      object =
-        params["object"]
-        |> Map.merge(Map.take(params, ["to", "cc"]))
-        |> Map.put("attributedTo", actor)
-        |> Transmogrifier.fix_object()
-
-      with {:ok, %Activity{} = activity} <-
-             ActivityPub.create(%{
-               to: params["to"],
-               actor: user,
-               context: object["context"],
-               object: object,
-               additional: Map.take(params, ["cc"])
-             }) do
+      with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
         conn
         |> put_status(:created)
         |> put_resp_header("location", activity.data["id"])
         |> json(activity.data)
+      else
+        {:error, message} ->
+          conn
+          |> put_status(:bad_request)
+          |> json(message)
       end
     else
       conn
diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index 477ab3b5f..8e8fa8121 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -120,7 +120,11 @@ def render("status.json", %{activity: %{data: %{"object" => object}} = activity}
     content =
       object
       |> render_content()
-      |> HTML.get_cached_scrubbed_html_for_object(User.html_filter_policy(opts[:for]), activity)
+      |> HTML.get_cached_scrubbed_html_for_object(
+        User.html_filter_policy(opts[:for]),
+        activity,
+        __MODULE__
+      )
 
     %{
       id: to_string(activity.id),
diff --git a/lib/pleroma/web/rich_media/controllers/rich_media_controller.ex b/lib/pleroma/web/rich_media/controllers/rich_media_controller.ex
new file mode 100644
index 000000000..91019961d
--- /dev/null
+++ b/lib/pleroma/web/rich_media/controllers/rich_media_controller.ex
@@ -0,0 +1,17 @@
+defmodule Pleroma.Web.RichMedia.RichMediaController do
+  use Pleroma.Web, :controller
+
+  import Pleroma.Web.ControllerHelper, only: [json_response: 3]
+
+  def parse(conn, %{"url" => url}) do
+    case Pleroma.Web.RichMedia.Parser.parse(url) do
+      {:ok, data} ->
+        conn
+        |> json_response(200, data)
+
+      {:error, msg} ->
+        conn
+        |> json_response(404, msg)
+    end
+  end
+end
diff --git a/lib/pleroma/web/rich_media/parser.ex b/lib/pleroma/web/rich_media/parser.ex
new file mode 100644
index 000000000..3746feaf6
--- /dev/null
+++ b/lib/pleroma/web/rich_media/parser.ex
@@ -0,0 +1,33 @@
+defmodule Pleroma.Web.RichMedia.Parser do
+  @parsers [Pleroma.Web.RichMedia.Parsers.OGP]
+
+  if Mix.env() == :test do
+    def parse(url), do: parse_url(url)
+  else
+    def parse(url),
+      do: {:commit, Cachex.fetch!(:rich_media_cache, url, fn _ -> parse_url(url) end)}
+  end
+
+  defp parse_url(url) do
+    {:ok, %Tesla.Env{body: html}} = Pleroma.HTTP.get(url)
+
+    html |> maybe_parse() |> get_parsed_data()
+  end
+
+  defp maybe_parse(html) do
+    Enum.reduce_while(@parsers, %{}, fn parser, acc ->
+      case parser.parse(html, acc) do
+        {:ok, data} -> {:halt, data}
+        {:error, _msg} -> {:cont, acc}
+      end
+    end)
+  end
+
+  defp get_parsed_data(data) when data == %{} do
+    {:error, "No metadata found"}
+  end
+
+  defp get_parsed_data(data) do
+    {:ok, data}
+  end
+end
diff --git a/lib/pleroma/web/rich_media/parsers/ogp.ex b/lib/pleroma/web/rich_media/parsers/ogp.ex
new file mode 100644
index 000000000..5773a5263
--- /dev/null
+++ b/lib/pleroma/web/rich_media/parsers/ogp.ex
@@ -0,0 +1,30 @@
+defmodule Pleroma.Web.RichMedia.Parsers.OGP do
+  def parse(html, data) do
+    with elements = [_ | _] <- get_elements(html),
+         ogp_data =
+           Enum.reduce(elements, data, fn el, acc ->
+             attributes = normalize_attributes(el)
+
+             Map.merge(acc, attributes)
+           end) do
+      {:ok, ogp_data}
+    else
+      _e -> {:error, "No OGP metadata found"}
+    end
+  end
+
+  defp get_elements(html) do
+    html |> Floki.find("meta[property^='og:']")
+  end
+
+  defp normalize_attributes(html_node) do
+    {_tag, attributes, _children} = html_node
+
+    data =
+      Enum.into(attributes, %{}, fn {name, value} ->
+        {name, String.trim_leading(value, "og:")}
+      end)
+
+    %{String.to_atom(data["property"]) => data["content"]}
+  end
+end
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 1f929ee21..8df45bf4d 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -232,6 +232,12 @@ defmodule Pleroma.Web.Router do
     put("/settings", MastodonAPIController, :put_settings)
   end
 
+  scope "/api", Pleroma.Web.RichMedia do
+    pipe_through(:authenticated_api)
+
+    get("/rich_media/parse", RichMediaController, :parse)
+  end
+
   scope "/api/v1", Pleroma.Web.MastodonAPI do
     pipe_through(:api)
     get("/instance", MastodonAPIController, :masto_instance)
diff --git a/lib/pleroma/web/twitter_api/views/activity_view.ex b/lib/pleroma/web/twitter_api/views/activity_view.ex
index 84f35ebf9..a0be5cfc5 100644
--- a/lib/pleroma/web/twitter_api/views/activity_view.ex
+++ b/lib/pleroma/web/twitter_api/views/activity_view.ex
@@ -245,14 +245,18 @@ def render(
 
     html =
       content
-      |> HTML.get_cached_scrubbed_html_for_object(User.html_filter_policy(opts[:for]), activity)
+      |> HTML.get_cached_scrubbed_html_for_object(
+        User.html_filter_policy(opts[:for]),
+        activity,
+        __MODULE__
+      )
       |> Formatter.emojify(object["emoji"])
 
     text =
       if content do
         content
         |> String.replace(~r/<br\s?\/?>/, "\n")
-        |> HTML.get_cached_stripped_html_for_object(activity)
+        |> HTML.get_cached_stripped_html_for_object(activity, __MODULE__)
       end
 
     reply_parent = Activity.get_in_reply_to_activity(activity)
diff --git a/mix.exs b/mix.exs
index efdd4b7ed..0b8052d0a 100644
--- a/mix.exs
+++ b/mix.exs
@@ -75,7 +75,8 @@ defp deps do
       {:web_push_encryption, "~> 0.2.1"},
       {:swoosh, "~> 0.20"},
       {:gen_smtp, "~> 0.13"},
-      {:websocket_client, git: "https://github.com/jeremyong/websocket_client.git", only: :test}
+      {:websocket_client, git: "https://github.com/jeremyong/websocket_client.git", only: :test},
+      {:floki, "~> 0.20.0"}
     ]
   end
 
diff --git a/mix.lock b/mix.lock
index 323f55bb9..d6836231d 100644
--- a/mix.lock
+++ b/mix.lock
@@ -20,9 +20,11 @@
   "ex_aws_s3": {:hex, :ex_aws_s3, "2.0.1", "9e09366e77f25d3d88c5393824e613344631be8db0d1839faca49686e99b6704", [:mix], [{:ex_aws, "~> 2.0", [hex: :ex_aws, repo: "hexpm", optional: false]}, {:sweet_xml, ">= 0.0.0", [hex: :sweet_xml, repo: "hexpm", optional: true]}], "hexpm"},
   "ex_doc": {:hex, :ex_doc, "0.19.1", "519bb9c19526ca51d326c060cb1778d4a9056b190086a8c6c115828eaccea6cf", [:mix], [{:earmark, "~> 1.1", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.7", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
   "ex_machina": {:hex, :ex_machina, "2.2.0", "fec496331e04fc2db2a1a24fe317c12c0c4a50d2beb8ebb3531ed1f0d84be0ed", [:mix], [{:ecto, "~> 2.1", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm"},
+  "floki": {:hex, :floki, "0.20.4", "be42ac911fece24b4c72f3b5846774b6e61b83fe685c2fc9d62093277fb3bc86", [:mix], [{:html_entities, "~> 0.4.0", [hex: :html_entities, repo: "hexpm", optional: false]}, {:mochiweb, "~> 2.15", [hex: :mochiweb, repo: "hexpm", optional: false]}], "hexpm"},
   "gen_smtp": {:hex, :gen_smtp, "0.13.0", "11f08504c4bdd831dc520b8f84a1dce5ce624474a797394e7aafd3c29f5dcd25", [:rebar3], [], "hexpm"},
   "gettext": {:hex, :gettext, "0.15.0", "40a2b8ce33a80ced7727e36768499fc9286881c43ebafccae6bab731e2b2b8ce", [:mix], [], "hexpm"},
   "hackney": {:hex, :hackney, "1.14.3", "b5f6f5dcc4f1fba340762738759209e21914516df6be440d85772542d4a5e412", [:rebar3], [{:certifi, "2.4.2", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
+  "html_entities": {:hex, :html_entities, "0.4.0", "f2fee876858cf6aaa9db608820a3209e45a087c5177332799592142b50e89a6b", [:mix], [], "hexpm"},
   "html_sanitize_ex": {:hex, :html_sanitize_ex, "1.3.0", "f005ad692b717691203f940c686208aa3d8ffd9dd4bb3699240096a51fa9564e", [:mix], [{:mochiweb, "~> 2.15", [hex: :mochiweb, repo: "hexpm", optional: false]}], "hexpm"},
   "httpoison": {:hex, :httpoison, "1.2.0", "2702ed3da5fd7a8130fc34b11965c8cfa21ade2f232c00b42d96d4967c39a3a3", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
diff --git a/test/fixtures/rich_media/ogp.html b/test/fixtures/rich_media/ogp.html
new file mode 100644
index 000000000..c886b5871
--- /dev/null
+++ b/test/fixtures/rich_media/ogp.html
@@ -0,0 +1,9 @@
+<html prefix="og: http://ogp.me/ns#">
+  <head>
+  <title>The Rock (1996)</title>
+    <meta property="og:title" content="The Rock" />
+    <meta property="og:type" content="video.movie" />
+    <meta property="og:url" content="http://www.imdb.com/title/tt0117500/" />
+    <meta property="og:image" content="http://ia.media-imdb.com/images/rock.jpg" />
+  </head>
+</html>
diff --git a/test/web/activity_pub/activity_pub_controller_test.exs b/test/web/activity_pub/activity_pub_controller_test.exs
index cb95e0e09..620e03674 100644
--- a/test/web/activity_pub/activity_pub_controller_test.exs
+++ b/test/web/activity_pub/activity_pub_controller_test.exs
@@ -6,7 +6,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
   use Pleroma.Web.ConnCase
   import Pleroma.Factory
   alias Pleroma.Web.ActivityPub.{UserView, ObjectView}
-  alias Pleroma.{Repo, User}
+  alias Pleroma.{Object, Repo, User}
   alias Pleroma.Activity
 
   setup_all do
@@ -179,7 +179,7 @@ test "it rejects posts from other users", %{conn: conn} do
       assert json_response(conn, 403)
     end
 
-    test "it inserts an incoming activity into the database", %{conn: conn} do
+    test "it inserts an incoming create activity into the database", %{conn: conn} do
       data = File.read!("test/fixtures/activitypub-client-post-activity.json") |> Poison.decode!()
       user = insert(:user)
 
@@ -192,6 +192,68 @@ test "it inserts an incoming activity into the database", %{conn: conn} do
       result = json_response(conn, 201)
       assert Activity.get_by_ap_id(result["id"])
     end
+
+    test "it rejects an incoming activity with bogus type", %{conn: conn} do
+      data = File.read!("test/fixtures/activitypub-client-post-activity.json") |> Poison.decode!()
+      user = insert(:user)
+
+      data =
+        data
+        |> Map.put("type", "BadType")
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> put_req_header("content-type", "application/activity+json")
+        |> post("/users/#{user.nickname}/outbox", data)
+
+      assert json_response(conn, 400)
+    end
+
+    test "it erects a tombstone when receiving a delete activity", %{conn: conn} do
+      note_activity = insert(:note_activity)
+      user = User.get_cached_by_ap_id(note_activity.data["actor"])
+
+      data = %{
+        type: "Delete",
+        object: %{
+          id: note_activity.data["object"]["id"]
+        }
+      }
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> put_req_header("content-type", "application/activity+json")
+        |> post("/users/#{user.nickname}/outbox", data)
+
+      result = json_response(conn, 201)
+      assert Activity.get_by_ap_id(result["id"])
+
+      object = Object.get_by_ap_id(note_activity.data["object"]["id"])
+      assert object
+      assert object.data["type"] == "Tombstone"
+    end
+
+    test "it rejects delete activity of object from other actor", %{conn: conn} do
+      note_activity = insert(:note_activity)
+      user = insert(:user)
+
+      data = %{
+        type: "Delete",
+        object: %{
+          id: note_activity.data["object"]["id"]
+        }
+      }
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> put_req_header("content-type", "application/activity+json")
+        |> post("/users/#{user.nickname}/outbox", data)
+
+      assert json_response(conn, 400)
+    end
   end
 
   describe "/users/:nickname/followers" do
diff --git a/test/web/rich_media/controllers/rich_media_controller_test.exs b/test/web/rich_media/controllers/rich_media_controller_test.exs
new file mode 100644
index 000000000..37c82631f
--- /dev/null
+++ b/test/web/rich_media/controllers/rich_media_controller_test.exs
@@ -0,0 +1,54 @@
+defmodule Pleroma.Web.RichMedia.RichMediaControllerTest do
+  use Pleroma.Web.ConnCase
+  import Pleroma.Factory
+
+  setup do
+    Tesla.Mock.mock(fn
+      %{
+        method: :get,
+        url: "http://example.com/ogp"
+      } ->
+        %Tesla.Env{status: 200, body: File.read!("test/fixtures/rich_media/ogp.html")}
+
+      %{method: :get, url: "http://example.com/empty"} ->
+        %Tesla.Env{status: 200, body: "hello"}
+    end)
+
+    :ok
+  end
+
+  describe "GET /api/rich_media/parse" do
+    setup do
+      user = insert(:user)
+
+      [user: user]
+    end
+
+    test "returns 404 if not metadata found", %{user: user} do
+      build_conn()
+      |> with_credentials(user.nickname, "test")
+      |> get("/api/rich_media/parse", %{"url" => "http://example.com/empty"})
+      |> json_response(404)
+    end
+
+    test "returns OGP metadata", %{user: user} do
+      response =
+        build_conn()
+        |> with_credentials(user.nickname, "test")
+        |> get("/api/rich_media/parse", %{"url" => "http://example.com/ogp"})
+        |> json_response(200)
+
+      assert response == %{
+               "image" => "http://ia.media-imdb.com/images/rock.jpg",
+               "title" => "The Rock",
+               "type" => "video.movie",
+               "url" => "http://www.imdb.com/title/tt0117500/"
+             }
+    end
+  end
+
+  defp with_credentials(conn, username, password) do
+    header_content = "Basic " <> Base.encode64("#{username}:#{password}")
+    put_req_header(conn, "authorization", header_content)
+  end
+end
diff --git a/test/web/rich_media/parser_test.exs b/test/web/rich_media/parser_test.exs
new file mode 100644
index 000000000..caf81e9fa
--- /dev/null
+++ b/test/web/rich_media/parser_test.exs
@@ -0,0 +1,33 @@
+defmodule Pleroma.Web.RichMedia.ParserTest do
+  use ExUnit.Case, async: true
+
+  setup do
+    Tesla.Mock.mock(fn
+      %{
+        method: :get,
+        url: "http://example.com/ogp"
+      } ->
+        %Tesla.Env{status: 200, body: File.read!("test/fixtures/rich_media/ogp.html")}
+
+      %{method: :get, url: "http://example.com/empty"} ->
+        %Tesla.Env{status: 200, body: "hello"}
+    end)
+
+    :ok
+  end
+
+  test "returns error when no metadata present" do
+    assert {:error, _} = Pleroma.Web.RichMedia.Parser.parse("http://example.com/empty")
+  end
+
+  test "parses ogp" do
+    assert Pleroma.Web.RichMedia.Parser.parse("http://example.com/ogp") ==
+             {:ok,
+              %{
+                image: "http://ia.media-imdb.com/images/rock.jpg",
+                title: "The Rock",
+                type: "video.movie",
+                url: "http://www.imdb.com/title/tt0117500/"
+              }}
+  end
+end