diff --git a/core/modules/image/config/schema/image.data_type.schema.yml b/core/modules/image/config/schema/image.data_type.schema.yml
new file mode 100644
index 0000000..d13f3db
--- /dev/null
+++ b/core/modules/image/config/schema/image.data_type.schema.yml
@@ -0,0 +1,30 @@
+# Basic data types for image.
+
+image_size:
+  type: mapping
+  mapping:
+    width:
+      type: integer
+      label: 'Width'
+    height:
+      type: integer
+      label: 'Height'
+
+field_image_default:
+  type: mapping
+  mapping:
+    fid:
+      type: integer
+      label: 'Image'
+    alt:
+      type: label
+      label: 'Alternate text'
+    title:
+      type: label
+      label: 'Title'
+    width:
+      type: integer
+      label: 'Width'
+    height:
+      type: integer
+      label: 'Height'
diff --git a/core/modules/image/config/schema/image.schema.yml b/core/modules/image/config/schema/image.schema.yml
index c9ae573..ae13637 100644
--- a/core/modules/image/config/schema/image.schema.yml
+++ b/core/modules/image/config/schema/image.schema.yml
@@ -1,15 +1,5 @@
 # Schema for configuration files of the Image module.
 
-image.size:
-  type: mapping
-  mapping:
-    width:
-      type: integer
-      label: 'Width'
-    height:
-      type: integer
-      label: 'Height'
-
 image.style.*:
   type: mapping
   label: 'Image style'
@@ -36,14 +26,14 @@ image.style.*:
       label: 'Default language'
 
 image.effect.image_crop:
-  type: image.size
+  type: image_size
   label: 'Image crop'
   mapping:
     anchor:
       label: 'Anchor'
 
 image.effect.image_resize:
-  type: image.size
+  type: image_size
   label: 'Image resize'
 
 image.effect.image_rotate:
@@ -60,7 +50,7 @@ image.effect.image_rotate:
       label: 'Randomize'
 
 image.effect.image_scale:
-  type: image.size
+  type: image_size
   label: 'Image scale'
   mapping:
     upscale:
@@ -68,7 +58,7 @@ image.effect.image_scale:
       label: 'Upscale'
 
 image.effect.image_scale_and_crop:
-  type: image.size
+  type: image_size
   label: 'Image scale and crop'
 
 image.settings:
@@ -92,7 +82,7 @@ field.image.settings:
       type: string
       label: 'Upload destination'
     default_image:
-      type: field.image.default
+      type: field_image_default
       label: 'Default value'
     column_groups:
       type: mapping
@@ -164,24 +154,5 @@ field.image.instance_settings:
       type: boolean
       label: 'Title field required'
     default_image:
-      type: field.image.default
+      type: field_image_default
       label: 'Default value'
-
-field.image.default:
-  type: mapping
-  mapping:
-    fid:
-      type: integer
-      label: 'Image'
-    alt:
-      type: label
-      label: 'Alternate text'
-    title:
-      type: label
-      label: 'Title'
-    width:
-      type: integer
-      label: 'Width'
-    height:
-      type: integer
-      label: 'Height'