diff --git a/lib/bds/metadata.ex b/lib/bds/metadata.ex
index 871d6d9..55c28ff 100644
--- a/lib/bds/metadata.ex
+++ b/lib/bds/metadata.ex
@@ -417,7 +417,7 @@ defmodule BDS.Metadata do
   defp write_json(project, file_name, payload) do
     meta_dir = Path.join(Projects.project_data_dir(project), "meta")
     path = Path.join(meta_dir, file_name)
-    Persistence.atomic_write(path, Jason.encode!(payload))
+    Persistence.atomic_write(path, Jason.encode!(payload, pretty: true))
   end
 
   defp read_json(project, file_name) do
diff --git a/lib/bds/tags.ex b/lib/bds/tags.ex
index 74a3204..d57c162 100644
--- a/lib/bds/tags.ex
+++ b/lib/bds/tags.ex
@@ -269,7 +269,7 @@ defmodule BDS.Tags do
         |> maybe_put("postTemplateSlug", tag.post_template_slug)
       end)
 
-    Persistence.atomic_write(path, Jason.encode!(payload))
+    Persistence.atomic_write(path, Jason.encode!(payload, pretty: true))
   end
 
   defp validate_unique_name(project_id, name) do
diff --git a/test/bds/metadata_test.exs b/test/bds/metadata_test.exs
index 9f037c3..1444b1c 100644
--- a/test/bds/metadata_test.exs
+++ b/test/bds/metadata_test.exs
@@ -99,6 +99,10 @@ defmodule BDS.MetadataTest do
     category_meta_path = Path.join([temp_dir, "meta", "category-meta.json"])
     publishing_path = Path.join([temp_dir, "meta", "publishing.json"])
 
+    assert File.read!(categories_path) =~ "\n"
+    assert File.read!(category_meta_path) =~ "\n"
+    assert File.read!(publishing_path) =~ "\n"
+
     assert ["article", "aside", "news", "page", "picture"] =
              Jason.decode!(File.read!(categories_path))
 
diff --git a/test/bds/tags_test.exs b/test/bds/tags_test.exs
index d194dfc..a0b0935 100644
--- a/test/bds/tags_test.exs
+++ b/test/bds/tags_test.exs
@@ -30,8 +30,12 @@ defmodule BDS.TagsTest do
     tags_path = Path.join([temp_dir, "meta", "tags.json"])
     assert File.exists?(tags_path)
 
+    contents = File.read!(tags_path)
+    assert contents =~ "\n"
+    refute String.contains?(contents, "}],[")
+
     assert [%{"name" => "Alpha"}, %{"color" => "#000000", "name" => "Zebra"}] =
-             Jason.decode!(File.read!(tags_path))
+             Jason.decode!(contents)
   end
 
   test "create_tag rejects case-insensitive duplicates per project", %{project: project} do