diff --git a/pdal/pdal_extensions.json b/pdal/pdal_extensions.json
new file mode 100644
index 0000000000..5f7d919498
--- /dev/null
+++ b/pdal/pdal_extensions.json
@@ -0,0 +1,62 @@
+[
+    "writers.pcd" :
+    {
+        "extensions" : "pcd",
+        "default_extensions" : "pcd"
+    },
+    "readers.greyhound" :
+    {
+        "extensions" : "greyhound",
+        "default_extensions" : "greyhound"
+    },
+    "readers.icebridge" :
+    {
+        "extensions" : "icebridge h5",
+        "default_extensions" : "icebridge h5"
+    },
+    "readers.matlab" :
+    {
+        "extensions" : "mat",
+        "default_extensions" : "mat"
+    },
+    "writers.matlab" :
+    {
+        "extensions" : "mat",
+        "default_extensions" : "mat"
+    },
+    "readers.nitf" :
+    {
+        "extensions" : "nitf, nsf, ntf",
+        "default_extensions" : "nitf, nsf, ntf"
+    },
+    "readers.pcd" :
+    {
+        "extensions" : "pcd",
+        "default_extensions" : "pcd"
+    },
+    "writers.pcd" :
+    {
+        "extensions" : "pcd",
+        "default_extensions" : "pcd"
+    },
+    "readers.sqlite" :
+    {
+        "extensions" : "sqlite, gpkg",
+        "default_extensions" : "sqlite, gpkg"
+    },
+    "writers.sqlite" :
+    {
+        "extensions" : "sqlite, gpkg",
+        "default_extensions" : "sqlite, gpkg"
+    },
+    "readers.mrsid" :
+    {
+        "extensions" : "sid",
+        "default_extensions" : "sid"
+    },
+    "readers.rxp" :
+    {
+        "extensions" : "rxp",
+        "default_extensions" : "rxp"
+    }
+]