diff --git a/gcode_metadata/metadata.py b/gcode_metadata/metadata.py
index 164739b..5920678 100644
--- a/gcode_metadata/metadata.py
+++ b/gcode_metadata/metadata.py
@@ -563,6 +563,7 @@ def set_attr(self, name, value):
         "normal_change_in_present": bool,
         "layer_info_present": bool,
         "max_layer_z": float,
+        "objects_info": json.loads,
     }
 
     # Add attributes that have multiple values in MMU print gcodes
diff --git a/tests/gcodes/fdn_full_0.15mm_PETG_MK3S_2h6m.gcode b/tests/gcodes/fdn_full_0.15mm_PETG_MK3S_2h6m.gcode
index cd35591..a155f1e 100644
--- a/tests/gcodes/fdn_full_0.15mm_PETG_MK3S_2h6m.gcode
+++ b/tests/gcodes/fdn_full_0.15mm_PETG_MK3S_2h6m.gcode
@@ -209977,6 +209977,7 @@ M73 Q100 S0
 ; notes = 
 ; nozzle_diameter = 0.4
 ; nozzle_high_flow = 0
+; objects_info = {"objects":[{"name":"Shape-Box id:0 copy 0","polygon":[[111.000,111.000],[93.000,111.000],[93.000,93.000],[111.000,93.000]]},{"name":"Shape-Box id:0 copy 1","polygon":[[87.000,111.000],[69.000,111.000],[69.000,93.000],[87.000,93.000]]},{"name":"Shape-Box id:0 copy 2","polygon":[[111.000,87.000],[93.000,87.000],[93.000,69.000],[111.000,69.000]]},{"name":"Shape-Box id:0 copy 3","polygon":[[87.000,87.000],[69.000,87.000],[69.000,69.000],[87.000,69.000]]}]}
 ; only_retract_when_crossing_perimeters = 0
 ; ooze_prevention = 0
 ; output_filename_format = {input_filename_base}_{layer_height}mm_{filament_type[0]}_{printer_model}_{print_time}.gcode
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
index b317047..47d8b24 100644
--- a/tests/test_metadata.py
+++ b/tests/test_metadata.py
@@ -230,6 +230,48 @@ def test_full(self):
             'normal_percent_present': True,
             'quiet_left_present': True,
             'quiet_percent_present': True,
+            # objects don't match up with the actually printed objects
+            # this is expected - I have copied object info from another file
+            'objects_info': {
+                "objects": [
+                    {
+                        "name": "Shape-Box id:0 copy 0",
+                        "polygon": [
+                            [111.000, 111.000],
+                            [93.000, 111.000],
+                            [93.000, 93.000],
+                            [111.000, 93.000]
+                        ]
+                    },
+                    {
+                        "name": "Shape-Box id:0 copy 1",
+                        "polygon": [
+                            [87.000, 111.000],
+                            [69.000, 111.000],
+                            [69.000, 93.000],
+                            [87.000, 93.000]
+                        ]
+                    },
+                    {
+                        "name": "Shape-Box id:0 copy 2",
+                        "polygon": [
+                            [111.000, 87.000],
+                            [93.000, 87.000],
+                            [93.000, 69.000],
+                            [111.000, 69.000]
+                        ]
+                    },
+                    {
+                        "name": "Shape-Box id:0 copy 3",
+                        "polygon": [
+                            [87.000, 87.000],
+                            [69.000, 87.000],
+                            [69.000, 69.000],
+                            [87.000, 69.000]
+                        ]
+                    }
+                ]
+            }
         }
         assert len(meta.thumbnails['640x480_PNG']) == 158644