diff --git a/changes/3ef24cd8510986bf45e39e390b383077.yaml b/changes/3ef24cd8510986bf45e39e390b383077.yaml
new file mode 100644
index 00000000000..1392a8ab689
--- /dev/null
+++ b/changes/3ef24cd8510986bf45e39e390b383077.yaml
@@ -0,0 +1,6 @@
+---
+desc: Added ``indent`` kwarg to ``$lib.json.save()`` to indent serialized json with a number of spaces or a specified string.
+prs:
+- 4052
+type: feat
+...
diff --git a/synapse/lib/stormlib/json.py b/synapse/lib/stormlib/json.py
index 8cd9a723d2b..6935891abf1 100644
--- a/synapse/lib/stormlib/json.py
+++ b/synapse/lib/stormlib/json.py
@@ -93,6 +93,7 @@ class JsonLib(s_stormtypes.Lib):
          'type': {'type': 'function', '_funcname': '_jsonSave',
                   'args': (
                       {'name': 'item', 'type': 'any', 'desc': 'The item to be serialized as a JSON string.', },
+                      {'name': 'indent', 'type': 'int', 'desc': 'Specify a number of spaces to indent with.', 'default': None},
                   ),
                   'returns': {'type': 'str', 'desc': 'The JSON serialized object.', }}},
         {'name': 'schema', 'desc': 'Get a JS schema validation object.',
@@ -115,10 +116,12 @@ def getObjLocals(self):
         }
 
     @s_stormtypes.stormfunc(readonly=True)
-    async def _jsonSave(self, item):
+    async def _jsonSave(self, item, indent=None):
+        indent = await s_stormtypes.toint(indent, noneok=True)
+
         try:
             item = await s_stormtypes.toprim(item)
-            return json.dumps(item)
+            return json.dumps(item, indent=indent)
         except Exception as e:
             mesg = f'Argument is not JSON compatible: {item}'
             raise s_exc.MustBeJsonSafe(mesg=mesg)
diff --git a/synapse/tests/test_lib_stormlib_json.py b/synapse/tests/test_lib_stormlib_json.py
index ecdad9568cb..00494dce825 100644
--- a/synapse/tests/test_lib_stormlib_json.py
+++ b/synapse/tests/test_lib_stormlib_json.py
@@ -12,6 +12,26 @@ async def test_stormlib_json(self):
 
             self.eq(((1, 2, 3)), await core.callStorm('return($lib.json.load("[1, 2, 3]"))'))
             self.eq(('["foo", "bar", "baz"]'), await core.callStorm('return($lib.json.save((foo, bar, baz)))'))
+            self.eq(('{"foo": 1, "bar": {"baz": "hello"}}'), await core.callStorm('return($lib.json.save(({"foo": 1, "bar": {"baz": "hello"}})))'))
+            self.eq(('{"foo": 1, "bar": {"baz": "hello"}}'), await core.callStorm('return($lib.json.save(({"foo": 1, "bar": {"baz": "hello"}}), (null)))'))
+            self.eq((
+'''{
+    "foo": 1,
+    "bar": {
+        "baz": "hello"
+    }
+}'''), await core.callStorm('return($lib.json.save(({"foo": 1, "bar": {"baz": "hello"}}), indent=(4)))'))
+
+            self.eq((
+'''{
+  "foo": 1,
+  "bar": {
+    "baz": "hello"
+  }
+}'''), await core.callStorm('return($lib.json.save(({"foo": 1, "bar": {"baz": "hello"}}), indent=2))'))
+
+            with self.raises(s_exc.BadCast):
+                await core.callStorm('return($lib.json.save(({"foo": 1, "bar": {"baz": "hello"}}), indent=x))')
 
             with self.raises(s_exc.BadJsonText):
                 await core.callStorm('return($lib.json.load(foo))')