diff --git a/core/docs/types/application_json.tid b/core/docs/types/application_json.tid
new file mode 100644
index 000000000..692634cb6
--- /dev/null
+++ b/core/docs/types/application_json.tid
@@ -0,0 +1,3 @@
+title: $:/docs/types/application/json
+description: JSON data
+name: application/json
diff --git a/core/docs/types/application_x_tiddler_dictionary.tid b/core/docs/types/application_x_tiddler_dictionary.tid
new file mode 100644
index 000000000..ca34238c9
--- /dev/null
+++ b/core/docs/types/application_x_tiddler_dictionary.tid
@@ -0,0 +1,3 @@
+title: $:/docs/types/application/x-tiddler-dictionary
+description: Data dictionary
+name: application/x-tiddler-dictionary