diff --git a/lib/bds/maintenance.ex b/lib/bds/maintenance.ex
index 0892ef9..009d0f5 100644
--- a/lib/bds/maintenance.ex
+++ b/lib/bds/maintenance.ex
@@ -5,7 +5,9 @@ defmodule BDS.Maintenance do
 
   alias BDS.Frontmatter
   alias BDS.Media.Media
+  alias BDS.Media.Translation, as: MediaTranslation
   alias BDS.Posts.Post
+  alias BDS.Posts.Translation, as: PostTranslation
   alias BDS.Projects
   alias BDS.Repo
   alias BDS.Scripts.Script
@@ -27,7 +29,9 @@ defmodule BDS.Maintenance do
 
     diff_reports =
       post_diff_reports(project_id, project) ++
+        post_translation_diff_reports(project_id, project) ++
         media_diff_reports(project_id, project) ++
+        media_translation_diff_reports(project_id, project) ++
         script_diff_reports(project_id, project) ++
         template_diff_reports(project_id, project)
 
@@ -110,6 +114,65 @@ defmodule BDS.Maintenance do
     end)
   end
 
+  defp post_translation_diff_reports(project_id, project) do
+    Repo.all(
+      from translation in PostTranslation,
+        where: translation.project_id == ^project_id and not is_nil(translation.file_path) and translation.file_path != ""
+    )
+    |> Enum.flat_map(fn translation ->
+      case read_frontmatter_document(project, translation.file_path) do
+        {:ok, %{fields: fields}} ->
+          differences =
+            [
+              diff_field("title", translation.title, Map.get(fields, "title")),
+              diff_field("excerpt", translation.excerpt, Map.get(fields, "excerpt")),
+              diff_field("language", translation.language, Map.get(fields, "language")),
+              diff_field("status", translation.status, Map.get(fields, "status")),
+              diff_field("translation_for", translation.translation_for, Map.get(fields, "translation_for"))
+            ]
+            |> Enum.reject(&is_nil/1)
+
+          if differences == [] do
+            []
+          else
+            [%{entity_type: "post_translation", entity_id: translation.id, differences: differences}]
+          end
+
+        {:error, _reason} ->
+          []
+      end
+    end)
+  end
+
+  defp media_translation_diff_reports(project_id, project) do
+    Repo.all(from translation in MediaTranslation, where: translation.project_id == ^project_id)
+    |> Enum.flat_map(fn translation ->
+      sidecar_path = media_translation_sidecar_path(project_id, translation)
+
+      case sidecar_path && read_sidecar_document(project, sidecar_path) do
+        {:ok, fields} ->
+          differences =
+            [
+              diff_field("title", translation.title, Map.get(fields, "title")),
+              diff_field("alt", translation.alt, Map.get(fields, "alt")),
+              diff_field("caption", translation.caption, Map.get(fields, "caption")),
+              diff_field("language", translation.language, Map.get(fields, "language")),
+              diff_field("translation_for", translation.translation_for, Map.get(fields, "translation_for"))
+            ]
+            |> Enum.reject(&is_nil/1)
+
+          if differences == [] do
+            []
+          else
+            [%{entity_type: "media_translation", entity_id: translation.id, differences: differences}]
+          end
+
+        _ ->
+          []
+      end
+    end)
+  end
+
   defp script_diff_reports(project_id, project) do
     Repo.all(
       from script in Script,
@@ -168,6 +231,8 @@ defmodule BDS.Maintenance do
   defp orphan_reports(project_id, project) do
     post_paths = MapSet.new(Repo.all(from post in Post, where: post.project_id == ^project_id, select: post.file_path))
     media_paths = MapSet.new(Repo.all(from media in Media, where: media.project_id == ^project_id, select: media.sidecar_path))
+    post_translation_paths = MapSet.new(Repo.all(from translation in PostTranslation, where: translation.project_id == ^project_id, select: translation.file_path))
+    media_translation_paths = MapSet.new(media_translation_sidecar_paths(project_id))
     script_paths = MapSet.new(Repo.all(from script in Script, where: script.project_id == ^project_id, select: script.file_path))
     template_paths = MapSet.new(Repo.all(from template in Template, where: template.project_id == ^project_id, select: template.file_path))
 
@@ -175,8 +240,16 @@ defmodule BDS.Maintenance do
       project
       |> list_project_files("posts/**/*.md")
       |> Enum.map(&Path.relative_to(&1, Projects.project_data_dir(project)))
+      |> Enum.reject(&translation_post_file?/1)
       |> Enum.reject(&MapSet.member?(post_paths, &1))
 
+    post_translation_orphans =
+      project
+      |> list_project_files("posts/**/*.md")
+      |> Enum.map(&Path.relative_to(&1, Projects.project_data_dir(project)))
+      |> Enum.filter(&translation_post_file?/1)
+      |> Enum.reject(&MapSet.member?(post_translation_paths, &1))
+
     media_orphans =
       project
       |> list_project_files("media/**/*.meta")
@@ -184,6 +257,13 @@ defmodule BDS.Maintenance do
       |> Enum.filter(&canonical_media_sidecar?/1)
       |> Enum.reject(&MapSet.member?(media_paths, &1))
 
+    media_translation_orphans =
+      project
+      |> list_project_files("media/**/*.meta")
+      |> Enum.map(&Path.relative_to(&1, Projects.project_data_dir(project)))
+      |> Enum.filter(&translation_media_sidecar?/1)
+      |> Enum.reject(&MapSet.member?(media_translation_paths, &1))
+
     script_orphans =
       project
       |> list_project_files("scripts/**/*.lua")
@@ -196,7 +276,7 @@ defmodule BDS.Maintenance do
       |> Enum.map(&Path.relative_to(&1, Projects.project_data_dir(project)))
       |> Enum.reject(&MapSet.member?(template_paths, &1))
 
-    (post_orphans ++ media_orphans ++ script_orphans ++ template_orphans)
+    (post_orphans ++ post_translation_orphans ++ media_orphans ++ media_translation_orphans ++ script_orphans ++ template_orphans)
     |> Enum.sort()
     |> Enum.map(&%{file_path: &1})
   end
@@ -249,4 +329,25 @@ defmodule BDS.Maintenance do
   defp canonical_media_sidecar?(relative_path) do
     not Regex.match?(~r/\.[a-z]{2}\.meta$/i, relative_path)
   end
+
+  defp translation_post_file?(relative_path) do
+    Regex.match?(~r/\.[a-z]{2}\.md$/i, relative_path)
+  end
+
+  defp translation_media_sidecar?(relative_path) do
+    Regex.match?(~r/\.[a-z]{2}\.meta$/i, relative_path)
+  end
+
+  defp media_translation_sidecar_paths(project_id) do
+    Repo.all(from translation in MediaTranslation, where: translation.project_id == ^project_id)
+    |> Enum.map(&media_translation_sidecar_path(project_id, &1))
+    |> Enum.reject(&is_nil/1)
+  end
+
+  defp media_translation_sidecar_path(project_id, translation) do
+    case Repo.one(from media in Media, where: media.project_id == ^project_id and media.id == ^translation.translation_for, select: media.file_path) do
+      nil -> nil
+      file_path -> "#{file_path}.#{translation.language}.meta"
+    end
+  end
 end
diff --git a/test/bds/maintenance_test.exs b/test/bds/maintenance_test.exs
index 683f8ca..f454acb 100644
--- a/test/bds/maintenance_test.exs
+++ b/test/bds/maintenance_test.exs
@@ -141,6 +141,16 @@ defmodule BDS.MaintenanceTest do
 
     assert {:ok, published_post} = BDS.Posts.publish_post(post.id)
 
+    assert {:ok, post_translation} =
+             BDS.Posts.upsert_post_translation(published_post.id, "de", %{
+               title: "Ursprunglicher Beitrag",
+               excerpt: "Zusammenfassung",
+               content: "Ubersetzter Inhalt"
+             })
+
+    assert {:ok, _republished_post} = BDS.Posts.publish_post(published_post.id)
+    published_post_translation = Repo.get!(BDS.Posts.Translation, post_translation.id)
+
     assert {:ok, media} =
              BDS.Media.import_media(%{
                project_id: project.id,
@@ -153,6 +163,13 @@ defmodule BDS.MaintenanceTest do
                tags: ["alpha"]
              })
 
+    assert {:ok, media_translation} =
+             BDS.Media.upsert_media_translation(media.id, "de", %{
+               title: "Ubersetzter Medientitel",
+               alt: "Ubersetzter Alt-Text",
+               caption: "Ubersetzte Beschriftung"
+             })
+
     assert {:ok, script} =
              BDS.Scripts.create_script(%{
                project_id: project.id,
@@ -202,6 +219,27 @@ defmodule BDS.MaintenanceTest do
       |> Enum.join("\n")
     )
 
+    post_translation_path = Path.join(temp_dir, published_post_translation.file_path)
+    File.write!(
+      post_translation_path,
+      [
+        "---",
+        "id: #{published_post_translation.id}",
+        "translation_for: #{published_post_translation.translation_for}",
+        "language: #{published_post_translation.language}",
+        "title: Bearbeiteter Beitrag",
+        "excerpt: Bearbeitete Zusammenfassung",
+        "status: published",
+        "created_at: #{published_post_translation.created_at}",
+        "updated_at: #{published_post_translation.updated_at}",
+        "published_at: #{published_post_translation.published_at}",
+        "---",
+        "Bearbeiteter Inhalt",
+        ""
+      ]
+      |> Enum.join("\n")
+    )
+
     media_sidecar_path = Path.join(temp_dir, media.sidecar_path)
     File.write!(
       media_sidecar_path,
@@ -224,6 +262,20 @@ defmodule BDS.MaintenanceTest do
       |> Enum.join("\n")
     )
 
+    media_translation_sidecar_path = Path.join(temp_dir, "#{media.file_path}.#{media_translation.language}.meta")
+    File.write!(
+      media_translation_sidecar_path,
+      [
+        "translation_for: #{media.id}",
+        "language: #{media_translation.language}",
+        "title: Bearbeiteter Medientitel",
+        "alt: Bearbeiteter Alt-Text",
+        "caption: Bearbeitete Beschriftung",
+        ""
+      ]
+      |> Enum.join("\n")
+    )
+
     script_path = Path.join(temp_dir, published_script.file_path)
     File.write!(
       script_path,
@@ -266,8 +318,10 @@ defmodule BDS.MaintenanceTest do
     )
 
     File.write!(Path.join([temp_dir, "posts", "2026", "04", "orphan-post.md"]), "---\nid: orphan\ntitle: Orphan\nslug: orphan\nstatus: published\ncreated_at: 1\nupdated_at: 1\npublished_at: 1\ntags:\ncategories:\n---\nBody\n")
+    File.write!(Path.join([temp_dir, "posts", "2026", "04", "orphan-post.es.md"]), "---\nid: orphan-post-translation\ntranslation_for: orphan\nlanguage: es\ntitle: Huerfano\nstatus: published\ncreated_at: 1\nupdated_at: 1\npublished_at: 1\n---\nCuerpo\n")
     File.write!(Path.join([temp_dir, "media", "2026", "04", "orphan.txt"]), "orphan")
     File.write!(Path.join([temp_dir, "media", "2026", "04", "orphan.txt.meta"]), "id: orphan-media\noriginal_name: orphan.txt\nmime_type: text/plain\nsize: 6\ncreated_at: 1\nupdated_at: 1\ntags:\n")
+    File.write!(Path.join([temp_dir, "media", "2026", "04", "orphan.txt.es.meta"]), "translation_for: orphan-media\nlanguage: es\ntitle: Huerfano\nalt: Texto\ncaption: Leyenda\n")
     File.write!(Path.join([temp_dir, "scripts", "orphan.lua"]), "---\nid: orphan-script\nslug: orphan-script\ntitle: Orphan Script\nkind: utility\nentrypoint: main\nenabled: true\nversion: 1\ncreated_at: 1\nupdated_at: 1\n---\nfunction main() return true end\n")
     File.write!(Path.join([temp_dir, "templates", "orphan-view.liquid"]), "---\nid: orphan-template\nslug: orphan-view\ntitle: Orphan View\nkind: list\nenabled: true\nversion: 1\ncreated_at: 1\nupdated_at: 1\n---\n<section>Orphan</section>\n")
 
@@ -297,9 +351,23 @@ defmodule BDS.MaintenanceTest do
                Enum.any?(report.differences, &(&1.name == "enabled" and &1.file_value == "false"))
            end)
 
+    assert Enum.any?(diff_reports, fn report ->
+             report.entity_type == "post_translation" and report.entity_id == published_post_translation.id and
+               Enum.any?(report.differences, &(&1.name == "title" and &1.db_value == "Ursprunglicher Beitrag" and &1.file_value == "Bearbeiteter Beitrag")) and
+               Enum.any?(report.differences, &(&1.name == "excerpt" and &1.db_value == "Zusammenfassung" and &1.file_value == "Bearbeitete Zusammenfassung"))
+           end)
+
+    assert Enum.any?(diff_reports, fn report ->
+             report.entity_type == "media_translation" and report.entity_id == media_translation.id and
+               Enum.any?(report.differences, &(&1.name == "title" and &1.db_value == "Ubersetzter Medientitel" and &1.file_value == "Bearbeiteter Medientitel")) and
+               Enum.any?(report.differences, &(&1.name == "alt" and &1.db_value == "Ubersetzter Alt-Text" and &1.file_value == "Bearbeiteter Alt-Text"))
+           end)
+
     orphan_paths = Enum.map(orphan_reports, & &1.file_path)
     assert "posts/2026/04/orphan-post.md" in orphan_paths
+    assert "posts/2026/04/orphan-post.es.md" in orphan_paths
     assert "media/2026/04/orphan.txt.meta" in orphan_paths
+    assert "media/2026/04/orphan.txt.es.meta" in orphan_paths
     assert "scripts/orphan.lua" in orphan_paths
     assert "templates/orphan-view.liquid" in orphan_paths
   end