diff --git a/lib/pleroma/formatter.ex b/lib/pleroma/formatter.ex
index 1a5c07c8a..5b03e9aeb 100644
--- a/lib/pleroma/formatter.ex
+++ b/lib/pleroma/formatter.ex
@@ -114,7 +114,7 @@ def add_user_links({subs, text}, mentions) do
 
     subs =
       subs ++
-        Enum.map(mentions, fn {match, %User{ap_id: ap_id, info: info}, uuid} ->
+        Enum.map(mentions, fn {match, %User{id: id, ap_id: ap_id, info: info}, uuid} ->
           ap_id =
             if is_binary(info.source_data["url"]) do
               info.source_data["url"]
@@ -125,7 +125,7 @@ def add_user_links({subs, text}, mentions) do
           short_match = String.split(match, "@") |> tl() |> hd()
 
           {uuid,
-           "<span><a class='mention' href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
+           "<span><a data-user='#{id}' class='mention' href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
         end)
 
     {subs, uuid_text}
@@ -147,7 +147,11 @@ def add_hashtag_links({subs, text}, tags) do
     subs =
       subs ++
         Enum.map(tags, fn {tag_text, tag, uuid} ->
-          url = "<a href='#{Pleroma.Web.base_url()}/tag/#{tag}' rel='tag'>#{tag_text}</a>"
+          url =
+            "<a data-tag='#{tag}' href='#{Pleroma.Web.base_url()}/tag/#{tag}' rel='tag'>#{
+              tag_text
+            }</a>"
+
           {uuid, url}
         end)
 
diff --git a/lib/pleroma/html.ex b/lib/pleroma/html.ex
index 1b920d7fd..5daaa5e69 100644
--- a/lib/pleroma/html.ex
+++ b/lib/pleroma/html.ex
@@ -45,7 +45,7 @@ defmodule Pleroma.HTML.Scrubber.TwitterText do
   Meta.strip_comments()
 
   # links
-  Meta.allow_tag_with_uri_attributes("a", ["href"], @valid_schemes)
+  Meta.allow_tag_with_uri_attributes("a", ["href", "data-user", "data-tag"], @valid_schemes)
   Meta.allow_tag_with_these_attributes("a", ["name", "title"])
 
   # paragraphs and linebreaks
@@ -86,7 +86,7 @@ defmodule Pleroma.HTML.Scrubber.Default do
   Meta.remove_cdata_sections_before_scrub()
   Meta.strip_comments()
 
-  Meta.allow_tag_with_uri_attributes("a", ["href"], @valid_schemes)
+  Meta.allow_tag_with_uri_attributes("a", ["href", "data-user", "data-tag"], @valid_schemes)
   Meta.allow_tag_with_these_attributes("a", ["name", "title"])
 
   Meta.allow_tag_with_these_attributes("abbr", ["title"])
diff --git a/test/formatter_test.exs b/test/formatter_test.exs
index 5d745510f..abb9d882c 100644
--- a/test/formatter_test.exs
+++ b/test/formatter_test.exs
@@ -15,7 +15,7 @@ test "turns hashtags into links" do
       text = "I love #cofe and #2hu"
 
       expected_text =
-        "I love <a href='http://localhost:4001/tag/cofe' rel='tag'>#cofe</a> and <a href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a>"
+        "I love <a data-tag='cofe' href='http://localhost:4001/tag/cofe' rel='tag'>#cofe</a> and <a data-tag='2hu' href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a>"
 
       tags = Formatter.parse_tags(text)
 
@@ -128,11 +128,11 @@ test "gives a replacement for user links" do
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
       expected_text =
-        "<span><a class='mention' href='#{gsimg.ap_id}'>@<span>gsimg</span></a></span> According to <span><a class='mention' href='#{
-          "https://archeme/@archaeme"
-        }'>@<span>archaeme</span></a></span>, that is @daggsy. Also hello <span><a class='mention' href='#{
-          archaeme_remote.ap_id
-        }'>@<span>archaeme</span></a></span>"
+        "<span><a data-user='#{gsimg.id}' class='mention' href='#{gsimg.ap_id}'>@<span>gsimg</span></a></span> According to <span><a data-user='#{
+          archaeme.id
+        }' class='mention' href='#{"https://archeme/@archaeme"}'>@<span>archaeme</span></a></span>, that is @daggsy. Also hello <span><a data-user='#{
+          archaeme_remote.id
+        }' class='mention' href='#{archaeme_remote.ap_id}'>@<span>archaeme</span></a></span>"
 
       assert expected_text == Formatter.finalize({subs, text})
     end
@@ -150,7 +150,7 @@ test "gives a replacement for user links when the user is using Osada" do
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
       expected_text =
-        "<span><a class='mention' href='#{mike.ap_id}'>@<span>mike</span></a></span> test"
+        "<span><a data-user='#{mike.id}' class='mention' href='#{mike.ap_id}'>@<span>mike</span></a></span> test"
 
       assert expected_text == Formatter.finalize({subs, text})
     end
@@ -166,7 +166,9 @@ test "gives a replacement for single-character local nicknames" do
       assert length(subs) == 1
       Enum.each(subs, fn {uuid, _} -> assert String.contains?(text, uuid) end)
 
-      expected_text = "<span><a class='mention' href='#{o.ap_id}'>@<span>o</span></a></span> hi"
+      expected_text =
+        "<span><a data-user='#{o.id}' class='mention' href='#{o.ap_id}'>@<span>o</span></a></span> hi"
+
       assert expected_text == Formatter.finalize({subs, text})
     end
 
diff --git a/test/web/mastodon_api/mastodon_api_controller_test.exs b/test/web/mastodon_api/mastodon_api_controller_test.exs
index 7cd98cde8..b5da2044a 100644
--- a/test/web/mastodon_api/mastodon_api_controller_test.exs
+++ b/test/web/mastodon_api/mastodon_api_controller_test.exs
@@ -590,7 +590,7 @@ test "list of notifications", %{conn: conn} do
         |> get("/api/v1/notifications")
 
       expected_response =
-        "hi <span><a href=\"#{user.ap_id}\">@<span>#{user.nickname}</span></a></span>"
+        "hi <span><a data-user=\"#{user.id}\" href=\"#{user.ap_id}\">@<span>#{user.nickname}</span></a></span>"
 
       assert [%{"status" => %{"content" => response}} | _rest] = json_response(conn, 200)
       assert response == expected_response
@@ -611,7 +611,7 @@ test "getting a single notification", %{conn: conn} do
         |> get("/api/v1/notifications/#{notification.id}")
 
       expected_response =
-        "hi <span><a href=\"#{user.ap_id}\">@<span>#{user.nickname}</span></a></span>"
+        "hi <span><a data-user=\"#{user.id}\" href=\"#{user.ap_id}\">@<span>#{user.nickname}</span></a></span>"
 
       assert %{"status" => %{"content" => response}} = json_response(conn, 200)
       assert response == expected_response
@@ -1271,9 +1271,9 @@ test "updates the user's bio", %{conn: conn} do
       assert user = json_response(conn, 200)
 
       assert user["note"] ==
-               "I drink <a href=\"http://localhost:4001/tag/cofe\">#cofe</a> with <span><a href=\"#{
-                 user2.ap_id
-               }\">@<span>#{user2.nickname}</span></a></span>"
+               "I drink <a data-tag=\"cofe\" href=\"http://localhost:4001/tag/cofe\">#cofe</a> with <span><a data-user=\"#{
+                 user2.id
+               }\" href=\"#{user2.ap_id}\">@<span>#{user2.nickname}</span></a></span>"
     end
 
     test "updates the user's locking status", %{conn: conn} do
diff --git a/test/web/twitter_api/twitter_api_controller_test.exs b/test/web/twitter_api/twitter_api_controller_test.exs
index a6495ffc1..77a89ba06 100644
--- a/test/web/twitter_api/twitter_api_controller_test.exs
+++ b/test/web/twitter_api/twitter_api_controller_test.exs
@@ -969,7 +969,9 @@ test "it updates a user's profile", %{conn: conn} do
       assert user.name == "new name"
 
       assert user.bio ==
-               "hi <span><a class='mention' href='#{user2.ap_id}'>@<span>#{user2.nickname}</span></a></span>"
+               "hi <span><a data-user='#{user2.id}' class='mention' href='#{user2.ap_id}'>@<span>#{
+                 user2.nickname
+               }</span></a></span>"
 
       assert json_response(conn, 200) == UserView.render("user.json", %{user: user, for: user})
     end
diff --git a/test/web/twitter_api/twitter_api_test.exs b/test/web/twitter_api/twitter_api_test.exs
index 28230699f..76de68783 100644
--- a/test/web/twitter_api/twitter_api_test.exs
+++ b/test/web/twitter_api/twitter_api_test.exs
@@ -10,7 +10,7 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPITest do
 
   test "create a status" do
     user = insert(:user)
-    _mentioned_user = insert(:user, %{nickname: "shp", ap_id: "shp"})
+    mentioned_user = insert(:user, %{nickname: "shp", ap_id: "shp"})
 
     object_data = %{
       "type" => "Image",
@@ -35,7 +35,7 @@ test "create a status" do
     {:ok, activity = %Activity{}} = TwitterAPI.create_status(user, input)
 
     expected_text =
-      "Hello again, <span><a class='mention' href='shp'>@<span>shp</span></a></span>.&lt;script&gt;&lt;/script&gt;<br>This is on another :moominmamma: line. <a href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a> <a href='http://localhost:4001/tag/epic' rel='tag'>#epic</a> <a href='http://localhost:4001/tag/phantasmagoric' rel='tag'>#phantasmagoric</a><br><a href=\"http://example.org/image.jpg\" class='attachment'>image.jpg</a>"
+      "Hello again, <span><a data-user='#{mentioned_user.id}' class='mention' href='shp'>@<span>shp</span></a></span>.&lt;script&gt;&lt;/script&gt;<br>This is on another :moominmamma: line. <a data-tag='2hu' href='http://localhost:4001/tag/2hu' rel='tag'>#2hu</a> <a data-tag='epic' href='http://localhost:4001/tag/epic' rel='tag'>#epic</a> <a data-tag='phantasmagoric' href='http://localhost:4001/tag/phantasmagoric' rel='tag'>#phantasmagoric</a><br><a href=\"http://example.org/image.jpg\" class='attachment'>image.jpg</a>"
 
     assert get_in(activity.data, ["object", "content"]) == expected_text
     assert get_in(activity.data, ["object", "type"]) == "Note"
@@ -281,7 +281,7 @@ test "it registers a new user and parses mentions in the bio" do
     {:ok, user2} = TwitterAPI.register_user(data2)
 
     expected_text =
-      "<span><a class='mention' href='#{user1.ap_id}'>@<span>john</span></a></span> test"
+      "<span><a data-user='#{user1.id}' class='mention' href='#{user1.ap_id}'>@<span>john</span></a></span> test"
 
     assert user2.bio == expected_text
   end
diff --git a/test/web/twitter_api/views/activity_view_test.exs b/test/web/twitter_api/views/activity_view_test.exs
index 5cef06f88..bc36b0e90 100644
--- a/test/web/twitter_api/views/activity_view_test.exs
+++ b/test/web/twitter_api/views/activity_view_test.exs
@@ -47,7 +47,7 @@ test "a create activity with a note" do
       "repeated" => false,
       "statusnet_conversation_id" => convo_id,
       "statusnet_html" =>
-        "Hey <span><a href=\"#{other_user.ap_id}\">@<span>shp</span></a></span>!",
+        "Hey <span><a data-user=\"#{other_user.id}\" href=\"#{other_user.ap_id}\">@<span>shp</span></a></span>!",
       "tags" => [],
       "text" => "Hey @shp!",
       "uri" => activity.data["object"]["id"],