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 @@ defmodule Pleroma.Formatter 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 @@ defmodule Pleroma.Formatter 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 @@ defmodule Pleroma.Formatter 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..271a48b57 100644
--- a/lib/pleroma/html.ex
+++ b/lib/pleroma/html.ex
@@ -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"])