diff --git a/instances/latest/contentTypes/application_vnd.localizoom+json.jsonld b/instances/latest/contentTypes/application_vnd.localizoom+json.jsonld
new file mode 100644
index 0000000000..a37edeaf1b
--- /dev/null
+++ b/instances/latest/contentTypes/application_vnd.localizoom+json.jsonld
@@ -0,0 +1,20 @@
+{
+  "@context": {
+    "@vocab": "https://openminds.om-i.org/props/"
+  },
+  "@id": "https://openminds.om-i.org/instances/contentTypes/application_vnd.localizoom+json",
+  "@type": "https://openminds.om-i.org/types/ContentType",
+  "dataType": null,
+  "description": "LocaliZoom JSON content type containing the image registration information for multiple tissue section images to a standard atlas space (‘target’ and ‘target resolution’).",
+  "displayLabel": null,
+  "fileExtension": [
+    ".json"
+  ],
+  "name": "application/vnd.localizoom+json",
+  "relatedMediaType": "https://www.iana.org/assignments/media-types/application/json",
+  "specification": null,
+  "synonym": [
+    "LocaliZoom JavaScript Object Notation",
+    "LocaliZoom JSON"
+  ]
+}
diff --git a/instances/latest/contentTypes/application_vnd.localizoom.lz.jsonld b/instances/latest/contentTypes/application_vnd.localizoom.lz+json.jsonld
similarity index 52%
rename from instances/latest/contentTypes/application_vnd.localizoom.lz.jsonld
rename to instances/latest/contentTypes/application_vnd.localizoom.lz+json.jsonld
index 4f35a8bc29..1ed80c98f0 100644
--- a/instances/latest/contentTypes/application_vnd.localizoom.lz.jsonld
+++ b/instances/latest/contentTypes/application_vnd.localizoom.lz+json.jsonld
@@ -2,18 +2,18 @@
   "@context": {
     "@vocab": "https://openminds.om-i.org/props/"
   },
-  "@id": "https://openminds.om-i.org/instances/contentTypes/application_vnd.localizoom.lz",
+  "@id": "https://openminds.om-i.org/instances/contentTypes/application_vnd.localizoom.lz+json",
   "@type": "https://openminds.om-i.org/types/ContentType",
   "dataType": null,
-  "description": null,
+  "description": "LocaliZoom lz is a JSON-based content type containing the image registration information for multiple tissue section images to a standard atlas space (‘target’ and ‘target resolution’).",
   "displayLabel": null,
   "fileExtension": [
     ".lz"
   ],
-  "name": "application/vnd.localizoom.lz",
+  "name": "application/vnd.localizoom.lz+json",
   "relatedMediaType": null,
   "specification": null,
   "synonym": [
-    "LZ file"
+    "LocaliZoom lz format"
   ]
 }