diff --git a/lib/philomena/comments.ex b/lib/philomena/comments.ex
index 90569d6e..d3a819d9 100644
--- a/lib/philomena/comments.ex
+++ b/lib/philomena/comments.ex
@@ -144,7 +144,7 @@ defmodule Philomena.Comments do
   end
 
   def hide_comment(%Comment{} = comment, attrs, user) do
-    report_query = Reports.close_report_query("Comment", comment.id, user)
+    report_query = Reports.close_report_query({"Comment", comment.id}, user)
     comment = Comment.hide_changeset(comment, attrs, user)
 
     Multi.new()
@@ -185,7 +185,7 @@ defmodule Philomena.Comments do
   end
 
   def approve_comment(%Comment{} = comment, user) do
-    report_query = Reports.close_report_query("Comment", comment.id, user)
+    report_query = Reports.close_report_query({"Comment", comment.id}, user)
     comment = Comment.approve_changeset(comment)
 
     Multi.new()
@@ -210,8 +210,7 @@ defmodule Philomena.Comments do
 
   def report_non_approved(comment) do
     Reports.create_system_report(
-      comment.id,
-      "Comment",
+      {"Comment", comment.id},
       "Approval",
       "Comment contains externally-embedded images and has been flagged for review."
     )
diff --git a/lib/philomena/conversations.ex b/lib/philomena/conversations.ex
index e9ed7500..82a2e495 100644
--- a/lib/philomena/conversations.ex
+++ b/lib/philomena/conversations.ex
@@ -208,7 +208,7 @@ defmodule Philomena.Conversations do
   end
 
   def approve_conversation_message(message, user) do
-    reports_query = Reports.close_report_query("Conversation", message.conversation_id, user)
+    reports_query = Reports.close_report_query({"Conversation", message.conversation_id}, user)
 
     message_query =
       message
@@ -236,8 +236,7 @@ defmodule Philomena.Conversations do
 
   def report_non_approved(id) do
     Reports.create_system_report(
-      id,
-      "Conversation",
+      {"Conversation", id},
       "Approval",
       "PM contains externally-embedded images and has been flagged for review."
     )
diff --git a/lib/philomena/images.ex b/lib/philomena/images.ex
index 5fea2e35..605c6f0a 100644
--- a/lib/philomena/images.ex
+++ b/lib/philomena/images.ex
@@ -193,8 +193,7 @@ defmodule Philomena.Images do
 
   defp maybe_suggest_user_verification(%User{id: id, uploads_count: 5, verified: false}) do
     Reports.create_system_report(
-      id,
-      "User",
+      {"User", id},
       "Verification",
       "User has uploaded enough approved images to be considered for verification."
     )
@@ -577,7 +576,7 @@ defmodule Philomena.Images do
   end
 
   defp hide_image_multi(changeset, image, user, multi) do
-    report_query = Reports.close_report_query("Image", image.id, user)
+    report_query = Reports.close_report_query({"Image", image.id}, user)
 
     galleries =
       Gallery
diff --git a/lib/philomena/posts.ex b/lib/philomena/posts.ex
index fc339c97..723ea6b6 100644
--- a/lib/philomena/posts.ex
+++ b/lib/philomena/posts.ex
@@ -114,8 +114,7 @@ defmodule Philomena.Posts do
 
   def report_non_approved(post) do
     Reports.create_system_report(
-      post.id,
-      "Post",
+      {"Post", post.id},
       "Approval",
       "Post contains externally-embedded images and has been flagged for review."
     )
@@ -203,7 +202,7 @@ defmodule Philomena.Posts do
   end
 
   def hide_post(%Post{} = post, attrs, user) do
-    report_query = Reports.close_report_query("Post", post.id, user)
+    report_query = Reports.close_report_query({"Post", post.id}, user)
 
     topics =
       Topic
@@ -250,7 +249,7 @@ defmodule Philomena.Posts do
   end
 
   def approve_post(%Post{} = post, user) do
-    report_query = Reports.close_report_query("Post", post.id, user)
+    report_query = Reports.close_report_query({"Post", post.id}, user)
     post = Post.approve_changeset(post)
 
     Multi.new()
diff --git a/lib/philomena/reports.ex b/lib/philomena/reports.ex
index 4f10391d..5cf508dd 100644
--- a/lib/philomena/reports.ex
+++ b/lib/philomena/reports.ex
@@ -12,6 +12,31 @@ defmodule Philomena.Reports do
   alias Philomena.IndexWorker
   alias Philomena.Polymorphic
 
+  @doc """
+  Returns the current number of open reports.
+
+  If the user is allowed to view reports, returns the current count.
+  If the user is not allowed to view reports, returns `nil`.
+
+  ## Examples
+
+      iex> count_reports(%User{})
+      nil
+
+      iex> count_reports(%User{role: "admin"})
+      4
+
+  """
+  def count_open_reports(user) do
+    if Canada.Can.can?(user, :index, Report) do
+      Report
+      |> where(open: true)
+      |> Repo.aggregate(:count)
+    else
+      nil
+    end
+  end
+
   @doc """
   Returns the list of reports.
 
@@ -53,8 +78,8 @@ defmodule Philomena.Reports do
       {:error, %Ecto.Changeset{}}
 
   """
-  def create_report(reportable_id, reportable_type, attribution, attrs \\ %{}) do
-    %Report{reportable_id: reportable_id, reportable_type: reportable_type}
+  def create_report({reportable_type, reportable_id} = _type_and_id, attribution, attrs \\ %{}) do
+    %Report{reportable_type: reportable_type, reportable_id: reportable_id}
     |> Report.creation_changeset(attrs, attribution)
     |> Repo.insert()
     |> reindex_after_update()
@@ -67,7 +92,7 @@ defmodule Philomena.Reports do
   Because this is only a query due to the limitations of `m:Ecto.Multi`, this must be
   coupled with an associated call to `reindex_reports/1` to operate correctly, e.g.:
 
-      report_query = Reports.close_system_report_query("Image", image.id, user)
+      report_query = Reports.close_system_report_query({"Image", image.id}, user)
 
       Multi.new()
       |> Multi.update_all(:reports, report_query, [])
@@ -88,14 +113,24 @@ defmodule Philomena.Reports do
       #Ecto.Query<...>
 
   """
-  def close_report_query(reportable_type, reportable_id, closing_user) do
+  def close_report_query({reportable_type, reportable_id} = _type_and_id, closing_user) do
     from r in Report,
       where: r.reportable_type == ^reportable_type and r.reportable_id == ^reportable_id,
       select: r.id,
       update: [set: [open: false, state: "closed", admin_id: ^closing_user.id]]
   end
 
-  def create_system_report(reportable_id, reportable_type, category, reason) do
+  @doc """
+  Automatically create a report with the given category and reason on the given
+  `reportable_id` and `reportable_type`.
+
+  ## Examples
+
+      iex> create_system_report({"Comment", 1}, "Other", "Custom report reason")
+      {:ok, %Report{}}
+
+  """
+  def create_system_report({reportable_type, reportable_id} = _type_and_id, category, reason) do
     attrs = %{
       reason: reason,
       category: category
@@ -109,7 +144,7 @@ defmodule Philomena.Reports do
         "Mozilla/5.0 (X11; Philomena; Linux x86_64; rv:86.0) Gecko/20100101 Firefox/86.0"
     }
 
-    %Report{reportable_id: reportable_id, reportable_type: reportable_type}
+    %Report{reportable_type: reportable_type, reportable_id: reportable_id}
     |> Report.creation_changeset(attrs, attributes)
     |> Repo.insert()
     |> reindex_after_update()
@@ -163,6 +198,15 @@ defmodule Philomena.Reports do
     Report.changeset(report, %{})
   end
 
+  @doc """
+  Marks the report as claimed by the given user.
+
+  ## Example
+
+      iex> claim_report(%Report{}, %User{})
+      {:ok, %Report{}}
+
+  """
   def claim_report(%Report{} = report, user) do
     report
     |> Report.claim_changeset(user)
@@ -170,6 +214,15 @@ defmodule Philomena.Reports do
     |> reindex_after_update()
   end
 
+  @doc """
+  Marks the report as unclaimed.
+
+  ## Example
+
+      iex> unclaim_report(%Report{})
+      {:ok, %Report{}}
+
+  """
   def unclaim_report(%Report{} = report) do
     report
     |> Report.unclaim_changeset()
@@ -177,6 +230,15 @@ defmodule Philomena.Reports do
     |> reindex_after_update()
   end
 
+  @doc """
+  Marks the report as closed by the given user.
+
+  ## Example
+
+      iex> close_report(%Report{}, %User{})
+      {:ok, %Report{}}
+
+  """
   def close_report(%Report{} = report, user) do
     report
     |> Report.close_changeset(user)
@@ -184,6 +246,15 @@ defmodule Philomena.Reports do
     |> reindex_after_update()
   end
 
+  @doc """
+  Reindex all reports where the user or admin has `old_name`.
+
+  ## Example
+
+      iex> user_name_reindex("Administrator", "Administrator2")
+      {:ok, %Req.Response{}}
+
+  """
   def user_name_reindex(old_name, new_name) do
     data = ReportIndex.user_name_update_by_query(old_name, new_name)
 
@@ -200,18 +271,25 @@ defmodule Philomena.Reports do
     result
   end
 
+  @doc """
+  Callback for post-transaction update.
+
+  See `close_report_query/2` for more information and example.
+  """
   def reindex_reports(report_ids) do
     Exq.enqueue(Exq, "indexing", IndexWorker, ["Reports", "id", report_ids])
 
     report_ids
   end
 
+  @doc false
   def reindex_report(%Report{} = report) do
     Exq.enqueue(Exq, "indexing", IndexWorker, ["Reports", "id", [report.id]])
 
     report
   end
 
+  @doc false
   def perform_reindex(column, condition) do
     Report
     |> where([r], field(r, ^column) in ^condition)
@@ -220,14 +298,4 @@ defmodule Philomena.Reports do
     |> Polymorphic.load_polymorphic(reportable: [reportable_id: :reportable_type])
     |> Enum.map(&Search.index_document(&1, Report))
   end
-
-  def count_reports(user) do
-    if Canada.Can.can?(user, :index, Report) do
-      Report
-      |> where(open: true)
-      |> Repo.aggregate(:count, :id)
-    else
-      nil
-    end
-  end
 end
diff --git a/lib/philomena_web/controllers/conversation/report_controller.ex b/lib/philomena_web/controllers/conversation/report_controller.ex
index dab81482..0f5736ca 100644
--- a/lib/philomena_web/controllers/conversation/report_controller.ex
+++ b/lib/philomena_web/controllers/conversation/report_controller.ex
@@ -42,6 +42,6 @@ defmodule PhilomenaWeb.Conversation.ReportController do
     conversation = conn.assigns.conversation
     action = ~p"/conversations/#{conversation}/reports"
 
-    ReportController.create(conn, action, conversation, "Conversation", params)
+    ReportController.create(conn, action, "Conversation", conversation, params)
   end
 end
diff --git a/lib/philomena_web/controllers/gallery/report_controller.ex b/lib/philomena_web/controllers/gallery/report_controller.ex
index 3d4b5fd5..c5d8b0a2 100644
--- a/lib/philomena_web/controllers/gallery/report_controller.ex
+++ b/lib/philomena_web/controllers/gallery/report_controller.ex
@@ -41,6 +41,6 @@ defmodule PhilomenaWeb.Gallery.ReportController do
     gallery = conn.assigns.gallery
     action = ~p"/galleries/#{gallery}/reports"
 
-    ReportController.create(conn, action, gallery, "Gallery", params)
+    ReportController.create(conn, action, "Gallery", gallery, params)
   end
 end
diff --git a/lib/philomena_web/controllers/image/comment/report_controller.ex b/lib/philomena_web/controllers/image/comment/report_controller.ex
index d957abbd..cb2f0b98 100644
--- a/lib/philomena_web/controllers/image/comment/report_controller.ex
+++ b/lib/philomena_web/controllers/image/comment/report_controller.ex
@@ -44,6 +44,6 @@ defmodule PhilomenaWeb.Image.Comment.ReportController do
     comment = conn.assigns.comment
     action = ~p"/images/#{comment.image}/comments/#{comment}/reports"
 
-    ReportController.create(conn, action, comment, "Comment", params)
+    ReportController.create(conn, action, "Comment", comment, params)
   end
 end
diff --git a/lib/philomena_web/controllers/image/report_controller.ex b/lib/philomena_web/controllers/image/report_controller.ex
index 6956832e..c00cee3d 100644
--- a/lib/philomena_web/controllers/image/report_controller.ex
+++ b/lib/philomena_web/controllers/image/report_controller.ex
@@ -41,6 +41,6 @@ defmodule PhilomenaWeb.Image.ReportController do
     image = conn.assigns.image
     action = ~p"/images/#{image}/reports"
 
-    ReportController.create(conn, action, image, "Image", params)
+    ReportController.create(conn, action, "Image", image, params)
   end
 end
diff --git a/lib/philomena_web/controllers/profile/commission/report_controller.ex b/lib/philomena_web/controllers/profile/commission/report_controller.ex
index 0ad943ef..9fe29308 100644
--- a/lib/philomena_web/controllers/profile/commission/report_controller.ex
+++ b/lib/philomena_web/controllers/profile/commission/report_controller.ex
@@ -53,7 +53,7 @@ defmodule PhilomenaWeb.Profile.Commission.ReportController do
     commission = conn.assigns.user.commission
     action = ~p"/profiles/#{user}/commission/reports"
 
-    ReportController.create(conn, action, commission, "Commission", params)
+    ReportController.create(conn, action, "Commission", commission, params)
   end
 
   defp ensure_commission(conn, _opts) do
diff --git a/lib/philomena_web/controllers/profile/report_controller.ex b/lib/philomena_web/controllers/profile/report_controller.ex
index 80a68895..b57c3a64 100644
--- a/lib/philomena_web/controllers/profile/report_controller.ex
+++ b/lib/philomena_web/controllers/profile/report_controller.ex
@@ -41,6 +41,6 @@ defmodule PhilomenaWeb.Profile.ReportController do
     user = conn.assigns.user
     action = ~p"/profiles/#{user}/reports"
 
-    ReportController.create(conn, action, user, "User", params)
+    ReportController.create(conn, action, "User", user, params)
   end
 end
diff --git a/lib/philomena_web/controllers/report_controller.ex b/lib/philomena_web/controllers/report_controller.ex
index 7860a32e..803f224e 100644
--- a/lib/philomena_web/controllers/report_controller.ex
+++ b/lib/philomena_web/controllers/report_controller.ex
@@ -33,7 +33,7 @@ defmodule PhilomenaWeb.ReportController do
   # plug PhilomenaWeb.CheckCaptchaPlug when action in [:create]
   # plug :load_and_authorize_resource, model: Image, id_name: "image_id", persisted: true
 
-  def create(conn, action, reportable, reportable_type, %{"report" => report_params}) do
+  def create(conn, action, reportable_type, reportable, %{"report" => report_params}) do
     attribution = conn.assigns.attributes
 
     case too_many_reports?(conn) do
@@ -46,7 +46,7 @@ defmodule PhilomenaWeb.ReportController do
         |> redirect(to: "/")
 
       _falsy ->
-        case Reports.create_report(reportable.id, reportable_type, attribution, report_params) do
+        case Reports.create_report({reportable_type, reportable.id}, attribution, report_params) do
           {:ok, _report} ->
             conn
             |> put_flash(
diff --git a/lib/philomena_web/controllers/topic/post/report_controller.ex b/lib/philomena_web/controllers/topic/post/report_controller.ex
index f09df511..b93ab225 100644
--- a/lib/philomena_web/controllers/topic/post/report_controller.ex
+++ b/lib/philomena_web/controllers/topic/post/report_controller.ex
@@ -42,6 +42,6 @@ defmodule PhilomenaWeb.Topic.Post.ReportController do
     post = conn.assigns.post
     action = ~p"/forums/#{topic.forum}/topics/#{topic}/posts/#{post}/reports"
 
-    ReportController.create(conn, action, post, "Post", params)
+    ReportController.create(conn, action, "Post", post, params)
   end
 end
diff --git a/lib/philomena_web/plugs/admin_counters_plug.ex b/lib/philomena_web/plugs/admin_counters_plug.ex
index 9e01a559..bf271c0e 100644
--- a/lib/philomena_web/plugs/admin_counters_plug.ex
+++ b/lib/philomena_web/plugs/admin_counters_plug.ex
@@ -34,7 +34,7 @@ defmodule PhilomenaWeb.AdminCountersPlug do
   defp maybe_assign_admin_metrics(conn, user, true) do
     pending_approvals = Images.count_pending_approvals(user)
     duplicate_reports = DuplicateReports.count_duplicate_reports(user)
-    reports = Reports.count_reports(user)
+    reports = Reports.count_open_reports(user)
     artist_links = ArtistLinks.count_artist_links(user)
     dnps = DnpEntries.count_dnp_entries(user)