diff --git a/raster/r.report/global.h b/raster/r.report/global.h
index a64b32e578d..f776705ecd7 100644
--- a/raster/r.report/global.h
+++ b/raster/r.report/global.h
@@ -109,6 +109,7 @@ int parse_layer(char *);
 int match(char *, char *, int);
 
 /* prt_report.c */
+int compute_unit_format(int, int, enum OutputFormat);
 int print_report(int, int);
 int construct_val_str(int, CELL *, char *);
 char *construct_cat_label(int, CELL);
diff --git a/raster/r.report/prt_json.c b/raster/r.report/prt_json.c
index 0f9b8ceb2b8..f56f0f382a7 100644
--- a/raster/r.report/prt_json.c
+++ b/raster/r.report/prt_json.c
@@ -63,16 +63,16 @@ JSON_Value *make_category(int ns, int nl, JSON_Value *sub_categories)
     json_object_set_number(object, "category", cats[nl]);
 
     DCELL dLow, dHigh;
-    char str[500];
 
     if (!is_fp[nl] || as_int)
-        json_object_set_number(object, "description", cats[nl]);
+        json_object_set_string(object, "label",
+                               Rast_get_c_cat(&cats[nl], &layers[nl].labels));
     else {
         /* find or construct the label for floating point range to print */
         if (Rast_is_c_null_value(&cats[nl]))
-            json_object_set_null(object, "description");
+            json_object_set_null(object, "label");
         else if (cat_ranges) {
-            json_object_set_string(object, "description",
+            json_object_set_string(object, "label",
                                    Rast_get_ith_d_cat(&layers[nl].labels,
                                                       cats[nl], &dLow, &dHigh));
         }
@@ -82,10 +82,8 @@ JSON_Value *make_category(int ns, int nl, JSON_Value *sub_categories)
                    DMIN[nl];
             dHigh = (DMAX[nl] - DMIN[nl]) / (double)nsteps * (double)cats[nl] +
                     DMIN[nl];
-            char *from = Rast_get_d_cat(&dLow, &layers[nl].labels);
-            char *to = Rast_get_d_cat(&dHigh, &layers[nl].labels);
-            sprintf(str, "from %s to %s", from, to);
-            json_object_set_string(object, "description", str);
+
+            json_object_set_string(object, "label", "from to");
 
             JSON_Value *range_value = json_value_init_object();
             JSON_Object *range_object = json_object(range_value);
@@ -132,53 +130,8 @@ JSON_Value *make_categories(int start, int end, int level)
 
 void print_json()
 {
-    for (int i = 0; i < nunits; i++) {
-        switch (unit[i].type) {
-        case CELL_COUNTS:
-            unit[i].label[0] = " cell";
-            unit[i].label[1] = "count";
-            break;
-
-        case PERCENT_COVER:
-            unit[i].label[0] = "  %  ";
-            unit[i].label[1] = "cover";
-            break;
-
-        case SQ_METERS:
-            unit[i].label[0] = "square";
-            unit[i].label[1] = "meters";
-            unit[i].factor = 1.0;
-            break;
-
-        case SQ_KILOMETERS:
-            unit[i].label[0] = "  square  ";
-            unit[i].label[1] = "kilometers";
-            unit[i].factor = 1.0e-6;
-            break;
-
-        case ACRES:
-            unit[i].label[0] = "";
-            unit[i].label[1] = "acres";
-            unit[i].factor = 2.47105381467165e-4; /* 640 acres in a sq mile */
-            break;
-
-        case HECTARES:
-            unit[i].label[0] = "";
-            unit[i].label[1] = "hectares";
-            unit[i].factor = 1.0e-4;
-            break;
-
-        case SQ_MILES:
-            unit[i].label[0] = "square";
-            unit[i].label[1] = " miles";
-            unit[i].factor = 3.86102158542446e-7; /* 1 / ( (0.0254m/in * 12in/ft
-                                                   * 5280ft/mi)^2 ) */
-            break;
-
-        default:
-            G_fatal_error("Unit %d not yet supported", unit[i].type);
-        }
-    }
+    compute_unit_format(0, nunits - 1, JSON);
+
     JSON_Value *root_value = json_value_init_object();
     JSON_Object *root_object = json_object(root_value);
 
@@ -200,7 +153,7 @@ void print_json()
         json_object_set_null(root_object, "mask");
     }
     else {
-        json_object_set_string(root_object, "mask", maskinfo());
+        json_object_set_string(root_object, "mask", mask);
     }
 
     JSON_Value *maps_value = json_value_init_array();
@@ -208,10 +161,10 @@ void print_json()
     for (int i = 0; i < nlayers; i++) {
         JSON_Value *map_value = json_value_init_object();
         JSON_Object *map_object = json_object(map_value);
-        json_object_set_string(map_object, "name", layers[i].name); // fixme
+        json_object_set_string(map_object, "name", layers[i].name);
         json_object_set_string(map_object, "description", layers[i].mapset);
         json_object_set_string(map_object, "layer", layers[i].name);
-        json_object_set_string(map_object, "type", "raster"); // fixme
+        json_object_set_string(map_object, "type", "raster");
         json_array_append_value(maps_array, map_value);
     }
     json_object_set_value(root_object, "maps", maps_value);
diff --git a/raster/r.report/prt_report.c b/raster/r.report/prt_report.c
index 8edb0ded88b..48ab4003c5c 100644
--- a/raster/r.report/prt_report.c
+++ b/raster/r.report/prt_report.c
@@ -3,48 +3,49 @@
 #include <grass/raster.h>
 #include "global.h"
 
-int print_report(int unit1, int unit2)
+int compute_unit_format(int unit1, int unit2, enum OutputFormat format)
 {
-    int ns, nl, nx;
+    int i, ns, len;
     char num[100];
-    int len, new;
-    CELL *cats, *prev;
-    int first;
-    int i;
-    int divider_level;
-    int after_header;
     int need_format;
-    int with_stats;
-    char *cp;
-    int spacing;
-    char dot;
 
     /* examine units, determine output format */
     for (i = unit1; i <= unit2; i++) {
-        need_format = 1;
+        if (format == PLAIN) {
+            need_format = 1;
+        }
+        else {
+            need_format = 0;
+        }
         unit[i].label[0] = "";
         unit[i].label[1] = "";
 
         switch (unit[i].type) {
         case CELL_COUNTS:
-            need_format = 0;
-            unit[i].len = 5;
             unit[i].label[0] = " cell";
             unit[i].label[1] = "count";
-            ns = 0;
-            sprintf(num, "%ld", count_sum(&ns, -1));
-            len = strlen(num);
-            if (len > unit[i].len)
-                unit[i].len = len;
+
+            if (need_format) {
+                need_format = 0;
+                unit[i].len = 5;
+                ns = 0;
+                sprintf(num, "%ld", count_sum(&ns, -1));
+                len = strlen(num);
+                if (len > unit[i].len)
+                    unit[i].len = len;
+            }
             break;
 
         case PERCENT_COVER:
-            need_format = 0;
-            unit[i].dp = 2;
-            unit[i].len = 6;
             unit[i].label[0] = "  %  ";
             unit[i].label[1] = "cover";
-            unit[i].eformat = 0;
+
+            if (need_format) {
+                need_format = 0;
+                unit[i].dp = 2;
+                unit[i].len = 6;
+                unit[i].eformat = 0;
+            }
             break;
 
         case SQ_METERS:
@@ -90,6 +91,24 @@ int print_report(int unit1, int unit2)
                          &unit[i].dp, &(unit[i].eformat), e_format);
         }
     }
+}
+
+int print_report(int unit1, int unit2)
+{
+    int ns, nl, nx;
+    char num[100];
+    int len, new;
+    CELL *cats, *prev;
+    int first;
+    int i;
+    int divider_level;
+    int after_header;
+    int with_stats;
+    char *cp;
+    int spacing;
+    char dot;
+
+    compute_unit_format(unit1, unit2, PLAIN);
 
     /* figure out how big the category numbers are when printed */
     for (nl = 0; nl < nlayers; nl++)
diff --git a/raster/r.report/r.report.html b/raster/r.report/r.report.html
index 7f1873a9331..7a27978aadb 100644
--- a/raster/r.report/r.report.html
+++ b/raster/r.report/r.report.html
@@ -135,1234 +135,704 @@ <h2>EXAMPLE</h2>
 The output from <em>r.report</em> can be output in JSON by passing the <b>format=json</b> option.
 
 <div class="code"><pre>
-r.report map=zipcodes@PERMANENT,landclass96@PERMANENT units=h,p format=json
+r.report -n -a map=towns,elevation units=miles,meters,kilometers,acres,hectares,cells,percent nsteps=2 format=json
 </pre></div>
 
 <div class="code"><pre>
 {
     "location": "nc_spm_08_grass7",
-    "created": "Fri Jun 28 18:41:29 2024",
+    "created": "Thu Jul 18 13:23:49 2024",
     "region": {
-        "north": 228500,
-        "south": 215000,
-        "east": 645000,
-        "west": 630000,
-        "ew_res": 10,
-        "ns_res": 10
+        "north": 320000,
+        "south": 10000,
+        "east": 935000,
+        "west": 120000,
+        "ew_res": 500,
+        "ns_res": 500
     },
-    "mask": "none",
+    "mask": null,
     "maps": [
         {
-            "name": "zipcodes@PERMANENT",
+            "name": "towns",
             "description": "PERMANENT",
-            "layer": "zipcodes@PERMANENT",
+            "layer": "towns",
             "type": "raster"
         },
         {
-            "name": "landclass96@PERMANENT",
+            "name": "elevation",
             "description": "PERMANENT",
-            "layer": "landclass96@PERMANENT",
+            "layer": "elevation",
             "type": "raster"
         }
     ],
     "categories": [
         {
-            "category": 27511,
-            "description": "CARY",
+            "category": 1,
+            "label": "CARY",
             "units": [
                 {
-                    "unit": "hectares",
-                    "value": 1058
-                },
-                {
-                    "unit": "% cover",
-                    "value": 5.2246913580246916
-                }
-            ],
-            "categories": [
-                {
-                    "category": 1,
-                    "description": "developed",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 197.94
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 18.708884688090738
-                        }
-                    ]
-                },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 24.440000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 2.3100189035916823
-                        }
-                    ]
-                },
-                {
-                    "category": 4,
-                    "description": "shrubland",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 58.080000000000005
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 5.4896030245746692
-                        }
-                    ]
-                },
-                {
-                    "category": 5,
-                    "description": "forest",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 775.91000000000008
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 73.337429111531193
-                        }
-                    ]
-                },
-                {
-                    "category": 6,
-                    "description": "water",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 1.54
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.14555765595463138
-                        }
-                    ]
-                },
-                {
-                    "category": -2147483648,
-                    "description": "no data",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 0.090000000000000011
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.0085066162570888466
-                        }
-                    ]
-                }
-            ]
-        },
-        {
-            "category": 27513,
-            "description": "CARY",
-            "units": [
-                {
-                    "unit": "hectares",
-                    "value": 205.30000000000001
-                },
-                {
-                    "unit": "% cover",
-                    "value": 1.0138271604938272
-                }
-            ],
-            "categories": [
-                {
-                    "category": 1,
-                    "description": "developed",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 32.579999999999998
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 15.869459327812956
-                        }
-                    ]
-                },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 5.9300000000000006
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 2.8884559181685336
-                        }
-                    ]
-                },
-                {
-                    "category": 4,
-                    "description": "shrubland",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 52.030000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 25.343399902581588
-                        }
-                    ]
-                },
-                {
-                    "category": 5,
-                    "description": "forest",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 114.76000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 55.898684851436919
-                        }
-                    ]
-                }
-            ]
-        },
-        {
-            "category": 27518,
-            "description": "CARY",
-            "units": [
-                {
-                    "unit": "hectares",
-                    "value": 1345.1900000000001
-                },
-                {
-                    "unit": "% cover",
-                    "value": 6.6429135802469137
-                }
-            ],
-            "categories": [
-                {
-                    "category": 1,
-                    "description": "developed",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 106.46000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 7.9141236553944054
-                        }
-                    ]
-                },
-                {
-                    "category": 2,
-                    "description": "agriculture",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 7.5
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.55754205725585237
-                        }
-                    ]
-                },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 84.620000000000005
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 6.2905611846653633
-                        }
-                    ]
-                },
-                {
-                    "category": 4,
-                    "description": "shrubland",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 179.63
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 13.353503965982501
-                        }
-                    ]
-                },
-                {
-                    "category": 5,
-                    "description": "forest",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 919.35000000000002
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 68.343505378422378
-                        }
-                    ]
-                },
-                {
-                    "category": 6,
-                    "description": "water",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 47.630000000000003
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 3.5407637582794997
-                        }
-                    ]
-                }
-            ]
-        },
-        {
-            "category": 27529,
-            "description": "GARNER",
-            "units": [
-                {
-                    "unit": "hectares",
-                    "value": 1415.72
-                },
-                {
-                    "unit": "% cover",
-                    "value": 6.99120987654321
-                }
-            ],
-            "categories": [
-                {
-                    "category": 1,
-                    "description": "developed",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 614.97000000000003
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 43.438674314129912
-                        }
-                    ]
-                },
-                {
-                    "category": 2,
-                    "description": "agriculture",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 7.25
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.51210691379651341
-                        }
-                    ]
-                },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 35.960000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 2.5400502924307067
-                        }
-                    ]
-                },
-                {
-                    "category": 4,
-                    "description": "shrubland",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 12.890000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.91049077501200804
-                        }
-                    ]
-                },
-                {
-                    "category": 5,
-                    "description": "forest",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 719.13
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 50.796061368067129
-                        }
-                    ]
+                    "unit": "square miles",
+                    "value": 10.231707201374819
                 },
                 {
-                    "category": 6,
-                    "description": "water",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 4.1699999999999999
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.29454976972847741
-                        }
-                    ]
-                },
-                {
-                    "category": -2147483648,
-                    "description": "no data",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 21.350000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 1.50806656683525
-                        }
-                    ]
-                }
-            ]
-        },
-        {
-            "category": 27539,
-            "description": "APEX",
-            "units": [
-                {
-                    "unit": "hectares",
-                    "value": 254.44000000000003
+                    "unit": "square meters",
+                    "value": 26500000
                 },
                 {
-                    "unit": "% cover",
-                    "value": 1.2564938271604937
-                }
-            ],
-            "categories": [
-                {
-                    "category": 1,
-                    "description": "developed",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 2.46
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.96682911491903789
-                        }
-                    ]
+                    "unit": "square kilometers",
+                    "value": 26.5
                 },
                 {
-                    "category": 2,
-                    "description": "agriculture",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 28.720000000000002
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 11.28753340669706
-                        }
-                    ]
+                    "unit": "acres",
+                    "value": 6548.2926088798722
                 },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 4.04
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 1.5878006602735419
-                        }
-                    ]
-                },
-                {
-                    "category": 4,
-                    "description": "shrubland",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 18.560000000000002
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 7.294450558088351
-                        }
-                    ]
-                },
-                {
-                    "category": 5,
-                    "description": "forest",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 192.37
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 75.605250746737937
-                        }
-                    ]
-                },
-                {
-                    "category": 6,
-                    "description": "water",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 0.87
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 0.34192736991039147
-                        }
-                    ]
-                },
-                {
-                    "category": -2147483648,
-                    "description": "no data",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 7.4199999999999999
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 2.9162081433736833
-                        }
-                    ]
-                }
-            ]
-        },
-        {
-            "category": 27601,
-            "description": "RALEIGH",
-            "units": [
                 {
                     "unit": "hectares",
-                    "value": 454.68000000000001
+                    "value": 2650
                 },
                 {
-                    "unit": "% cover",
-                    "value": 2.2453333333333334
-                }
-            ],
-            "categories": [
-                {
-                    "category": 1,
-                    "description": "developed",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 436.65000000000003
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 96.034573766165209
-                        }
-                    ]
-                },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
-                        {
-                            "unit": "hectares",
-                            "value": 11.610000000000001
-                        },
-                        {
-                            "unit": "% cover",
-                            "value": 2.5534441805225652
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-                            "value": 55.79592227433713
-                        }
-                    ]
-                },
-                {
-                    "category": 3,
-                    "description": "herbaceous",
-                    "units": [
+                            "unit": "square meters",
+                            "value": 250000
+                        },
                         {
-                            "unit": "hectares",
-                            "value": 68.219999999999999
+                            "unit": "square kilometers",
+                            "value": 0.25
                         },
                         {
-                            "unit": "% cover",
-                            "value": 5.0231571816715874
-                        }
-                    ]
-                },
-                {
-                    "category": 4,
-                    "description": "shrubland",
-                    "units": [
+                            "unit": "acres",
+                            "value": 61.776345366791247
+                        },
                         {
                             "unit": "hectares",
-                            "value": 5.8700000000000001
+                            "value": 25
+                        },
+                        {
+                            "unit": "cell counts",
+                            "value": 1
                         },
                         {
                             "unit": "% cover",
-                            "value": 0.43221830337748784
+                            "value": 1.2048192771084338
                         }
                     ]
                 },
                 {
-                    "category": 5,
-                    "description": "forest",
+                    "category": 2,
+                    "label": "from to",
+                    "range": {
+                        "from": 105.9543285369873,
+                        "to": 156.32986450195312
+                    },
                     "units": [
                         {
-                            "unit": "hectares",
-                            "value": 500.04000000000002
+                            "unit": "square miles",
+                            "value": 7.9150942501201422
                         },
                         {
-                            "unit": "% cover",
-                            "value": 36.81881438175111
-                        }
-                    ]
-                },
-                {
-                    "category": 6,
-                    "description": "water",
-                    "units": [
+                            "unit": "square meters",
+                            "value": 20500000
+                        },
                         {
-                            "unit": "hectares",
-                            "value": 1.9200000000000002
+                            "unit": "square kilometers",
+                            "value": 20.5
                         },
                         {
-                            "unit": "% cover",
-                            "value": 0.14137293739093298
-                        }
-                    ]
-                },
-                {
-                    "category": -2147483648,
-                    "description": "no data",
-                    "units": [
+                            "unit": "acres",
+                            "value": 5065.6603200768823
+                        },
                         {
                             "unit": "hectares",
-                            "value": 24.290000000000003
+                            "value": 2050
+                        },
+                        {
+                            "unit": "cell counts",
+                            "value": 82
                         },
                         {
                             "unit": "% cover",
-                            "value": 1.7885149214717513
+                            "value": 98.795180722891573
                         }
                     ]
                 }
@@ -1370,10 +840,30 @@ <h2>EXAMPLE</h2>
         }
     ],
     "totals": [
+        {
+            "unit": "square miles",
+            "value": 78.185687104845314
+        },
+        {
+            "unit": "square meters",
+            "value": 202500000
+        },
+        {
+            "unit": "square kilometers",
+            "value": 202.5
+        },
+        {
+            "unit": "acres",
+            "value": 50038.839747100916
+        },
         {
             "unit": "hectares",
             "value": 20250
         },
+        {
+            "unit": "cell counts",
+            "value": 810
+        },
         {
             "unit": "% cover",
             "value": 100
diff --git a/raster/r.report/testsuite/test_r_report.py b/raster/r.report/testsuite/test_r_report.py
index 369a57cc99b..47b36ac1bbb 100644
--- a/raster/r.report/testsuite/test_r_report.py
+++ b/raster/r.report/testsuite/test_r_report.py
@@ -63,6 +63,35 @@ def test_output(self):
         self.assertModule("r.report", map="lakes", output=self.outfile)
         self.assertFileExists(self.outfile)
 
+    def _assert_report_equal(self, reference, data):
+        keys = ["location", "region", "mask", "maps", "totals"]
+        for key in keys:
+            self.assertEqual(reference[key], data[key])
+
+        for category1, category2 in zip_longest(
+            reference["categories"], data["categories"]
+        ):
+            self.assertEqual(category1["category"], category2["category"])
+            self.assertEqual(category1["label"], category2["label"])
+
+            for unit1, unit2 in zip_longest(category1["units"], category2["units"]):
+                self.assertEqual(unit1["unit"], unit2["unit"])
+                self.assertAlmostEqual(unit1["value"], unit2["value"], places=6)
+
+            for sub_category1, sub_category2 in zip_longest(
+                category1["categories"], category2["categories"]
+            ):
+                self.assertEqual(sub_category1["category"], sub_category2["category"])
+                self.assertEqual(sub_category1["label"], sub_category2["label"])
+
+                for sub_unit1, sub_unit2 in zip_longest(
+                    sub_category1["units"], sub_category2["units"]
+                ):
+                    self.assertEqual(sub_unit1["unit"], sub_unit2["unit"])
+                    self.assertAlmostEqual(
+                        sub_unit1["value"], sub_unit2["value"], places=6
+                    )
+
     def test_json(self):
         """Test JSON format"""
         reference = {
@@ -75,7 +104,7 @@ def test_json(self):
                 "ew_res": 10,
                 "ns_res": 10,
             },
-            "mask": "none",
+            "mask": None,
             "maps": [
                 {
                     "name": "towns",
@@ -85,7 +114,7 @@ def test_json(self):
                 },
                 {
                     "name": "zipcodes",
-                    "description": "PERMANENT",
+                    "description": "landsat",
                     "layer": "zipcodes",
                     "type": "raster",
                 },
@@ -93,7 +122,7 @@ def test_json(self):
             "categories": [
                 {
                     "category": 1,
-                    "description": "CARY",
+                    "label": "CARY",
                     "units": [
                         {"unit": "cell counts", "value": 260849},
                         {"unit": "% cover", "value": 12.881432098765432},
@@ -101,7 +130,7 @@ def test_json(self):
                     "categories": [
                         {
                             "category": 27511,
-                            "description": "CARY",
+                            "label": "CARY",
                             "units": [
                                 {"unit": "cell counts", "value": 105800},
                                 {"unit": "% cover", "value": 40.559864135956055},
@@ -109,7 +138,7 @@ def test_json(self):
                         },
                         {
                             "category": 27513,
-                            "description": "CARY",
+                            "label": "CARY",
                             "units": [
                                 {"unit": "cell counts", "value": 20530},
                                 {"unit": "% cover", "value": 7.8704537874402432},
@@ -117,7 +146,7 @@ def test_json(self):
                         },
                         {
                             "category": 27518,
-                            "description": "CARY",
+                            "label": "CARY",
                             "units": [
                                 {"unit": "cell counts", "value": 134519},
                                 {"unit": "% cover", "value": 51.569682076603705},
@@ -127,7 +156,7 @@ def test_json(self):
                 },
                 {
                     "category": 2,
-                    "description": "GARNER",
+                    "label": "GARNER",
                     "units": [
                         {"unit": "cell counts", "value": 141572},
                         {"unit": "% cover", "value": 6.99120987654321},
@@ -135,7 +164,7 @@ def test_json(self):
                     "categories": [
                         {
                             "category": 27529,
-                            "description": "GARNER",
+                            "label": "GARNER",
                             "units": [
                                 {"unit": "cell counts", "value": 141572},
                                 {"unit": "% cover", "value": 100},
@@ -145,7 +174,7 @@ def test_json(self):
                 },
                 {
                     "category": 3,
-                    "description": "APEX",
+                    "label": "APEX",
                     "units": [
                         {"unit": "cell counts", "value": 25444},
                         {"unit": "% cover", "value": 1.2564938271604937},
@@ -153,7 +182,7 @@ def test_json(self):
                     "categories": [
                         {
                             "category": 27539,
-                            "description": "APEX",
+                            "label": "APEX",
                             "units": [
                                 {"unit": "cell counts", "value": 25444},
                                 {"unit": "% cover", "value": 100},
@@ -163,7 +192,7 @@ def test_json(self):
                 },
                 {
                     "category": 4,
-                    "description": "RALEIGH-CITY",
+                    "label": "RALEIGH-CITY",
                     "units": [
                         {"unit": "cell counts", "value": 160514},
                         {"unit": "% cover", "value": 7.926617283950617},
@@ -171,7 +200,7 @@ def test_json(self):
                     "categories": [
                         {
                             "category": 27601,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 45468},
                                 {"unit": "% cover", "value": 28.326501115167524},
@@ -179,7 +208,7 @@ def test_json(self):
                         },
                         {
                             "category": 27604,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 47389},
                                 {"unit": "% cover", "value": 29.523281458315161},
@@ -187,7 +216,7 @@ def test_json(self):
                         },
                         {
                             "category": 27605,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 23677},
                                 {"unit": "% cover", "value": 14.750738253361078},
@@ -195,7 +224,7 @@ def test_json(self):
                         },
                         {
                             "category": 27608,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 43980},
                                 {"unit": "% cover", "value": 27.399479173156237},
@@ -205,7 +234,7 @@ def test_json(self):
                 },
                 {
                     "category": 5,
-                    "description": "RALEIGH-SOUTH",
+                    "label": "RALEIGH-SOUTH",
                     "units": [
                         {"unit": "cell counts", "value": 1227632},
                         {"unit": "% cover", "value": 60.623802469135804},
@@ -213,7 +242,7 @@ def test_json(self):
                     "categories": [
                         {
                             "category": 27603,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 429179},
                                 {"unit": "% cover", "value": 34.959906551800536},
@@ -221,7 +250,7 @@ def test_json(self):
                         },
                         {
                             "category": 27606,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 662642},
                                 {"unit": "% cover", "value": 53.977250511553954},
@@ -229,7 +258,7 @@ def test_json(self):
                         },
                         {
                             "category": 27610,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 135811},
                                 {"unit": "% cover", "value": 11.062842936645509},
@@ -239,7 +268,7 @@ def test_json(self):
                 },
                 {
                     "category": 6,
-                    "description": "RALEIGH-WEST",
+                    "label": "RALEIGH-WEST",
                     "units": [
                         {"unit": "cell counts", "value": 208989},
                         {"unit": "% cover", "value": 10.320444444444444},
@@ -247,7 +276,7 @@ def test_json(self):
                     "categories": [
                         {
                             "category": 27607,
-                            "description": "RALEIGH",
+                            "label": "RALEIGH",
                             "units": [
                                 {"unit": "cell counts", "value": 208989},
                                 {"unit": "% cover", "value": 100},
@@ -261,40 +290,375 @@ def test_json(self):
                 {"unit": "% cover", "value": 100},
             ],
         }
-
         module = SimpleModule("r.report", map="towns,zipcodes", format="json")
         self.runModule(module)
         data = json.loads(module.outputs.stdout)
+        self._assert_report_equal(reference, data)
 
-        keys = ["location", "region", "mask", "maps", "totals"]
-        for key in keys:
-            self.assertEqual(reference[key], data[key])
-
-        for category1, category2 in zip_longest(
-            reference["categories"], data["categories"]
-        ):
-            self.assertEqual(category1["category"], category2["category"])
-            self.assertEqual(category1["description"], category2["description"])
-
-            for unit1, unit2 in zip_longest(category1["units"], category2["units"]):
-                self.assertEqual(unit1["unit"], unit2["unit"])
-                self.assertAlmostEqual(unit1["value"], unit2["value"], places=6)
-
-            for sub_category1, sub_category2 in zip_longest(
-                category1["categories"], category2["categories"]
-            ):
-                self.assertEqual(sub_category1["category"], sub_category2["category"])
-                self.assertEqual(
-                    sub_category1["description"], sub_category2["description"]
-                )
-
-                for sub_unit1, sub_unit2 in zip_longest(
-                    sub_category1["units"], sub_category2["units"]
-                ):
-                    self.assertEqual(sub_unit1["unit"], sub_unit2["unit"])
-                    self.assertAlmostEqual(
-                        sub_unit1["value"], sub_unit2["value"], places=6
-                    )
+    def test_json2(self):
+        """Test JSON format with more options"""
+        reference = {
+            "location": "nc_spm_08_grass7",
+            "created": "Thu Jul 18 14:21:20 2024",
+            "region": {
+                "north": 228500,
+                "south": 215000,
+                "east": 645000,
+                "west": 630000,
+                "ew_res": 10,
+                "ns_res": 10,
+            },
+            "mask": None,
+            "maps": [
+                {
+                    "name": "towns",
+                    "description": "PERMANENT",
+                    "layer": "towns",
+                    "type": "raster",
+                },
+                {
+                    "name": "elevation",
+                    "description": "PERMANENT",
+                    "layer": "elevation",
+                    "type": "raster",
+                },
+            ],
+            "categories": [
+                {
+                    "category": 1,
+                    "label": "CARY",
+                    "units": [
+                        {"unit": "square miles", "value": 10.07143619536385},
+                        {"unit": "square meters", "value": 26084900},
+                        {"unit": "square kilometers", "value": 26.084899999999998},
+                        {"unit": "acres", "value": 6445.719165032852},
+                        {"unit": "hectares", "value": 2608.4900000000002},
+                        {"unit": "cell counts", "value": 260849},
+                        {"unit": "% cover", "value": 12.881432098765432},
+                    ],
+                    "categories": [
+                        {
+                            "category": 1,
+                            "label": "from to",
+                            "range": {
+                                "from": 55.578792572021484,
+                                "to": 105.9543285369873,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 0.9655642780829489},
+                                {"unit": "square meters", "value": 2500800},
+                                {"unit": "square kilometers", "value": 2.5008},
+                                {"unit": "acres", "value": 617.9611379730862},
+                                {"unit": "hectares", "value": 250.08},
+                                {"unit": "cell counts", "value": 25008},
+                                {"unit": "% cover", "value": 9.58715578744791},
+                            ],
+                        },
+                        {
+                            "category": 2,
+                            "label": "from to",
+                            "range": {
+                                "from": 105.9543285369873,
+                                "to": 156.32986450195312,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 9.1058719172809},
+                                {"unit": "square meters", "value": 23584100},
+                                {"unit": "square kilometers", "value": 23.5841},
+                                {"unit": "acres", "value": 5827.758027059766},
+                                {"unit": "hectares", "value": 2358.4100000000003},
+                                {"unit": "cell counts", "value": 235841},
+                                {"unit": "% cover", "value": 90.41284421255209},
+                            ],
+                        },
+                    ],
+                },
+                {
+                    "category": 2,
+                    "label": "GARNER",
+                    "units": [
+                        {"unit": "square miles", "value": 5.4661254789171165},
+                        {"unit": "square meters", "value": 14157200},
+                        {"unit": "square kilometers", "value": 14.1572},
+                        {"unit": "acres", "value": 3498.3203065069483},
+                        {"unit": "hectares", "value": 1415.72},
+                        {"unit": "cell counts", "value": 141572},
+                        {"unit": "% cover", "value": 6.99120987654321},
+                    ],
+                    "categories": [
+                        {
+                            "category": 1,
+                            "label": "from to",
+                            "range": {
+                                "from": 55.578792572021484,
+                                "to": 105.9543285369873,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 4.24917008540718},
+                                {"unit": "square meters", "value": 11005300},
+                                {"unit": "square kilometers", "value": 11.0053},
+                                {"unit": "acres", "value": 2719.4688546605908},
+                                {"unit": "hectares", "value": 1100.53},
+                                {"unit": "cell counts", "value": 110053},
+                                {"unit": "% cover", "value": 77.73641680558302},
+                            ],
+                        },
+                        {
+                            "category": 2,
+                            "label": "from to",
+                            "range": {
+                                "from": 105.9543285369873,
+                                "to": 156.32986450195312,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 1.2169553935099355},
+                                {"unit": "square meters", "value": 3151900},
+                                {"unit": "square kilometers", "value": 3.1519},
+                                {"unit": "acres", "value": 778.8514518463573},
+                                {"unit": "hectares", "value": 315.19},
+                                {"unit": "cell counts", "value": 31519},
+                                {"unit": "% cover", "value": 22.263583194416974},
+                            ],
+                        },
+                    ],
+                },
+                {
+                    "category": 3,
+                    "label": "APEX",
+                    "units": [
+                        {"unit": "square miles", "value": 0.9823983321953995},
+                        {"unit": "square meters", "value": 2544400},
+                        {"unit": "square kilometers", "value": 2.5444},
+                        {"unit": "acres", "value": 628.7349326050546},
+                        {"unit": "hectares", "value": 254.44000000000003},
+                        {"unit": "cell counts", "value": 25444},
+                        {"unit": "% cover", "value": 1.2564938271604937},
+                    ],
+                    "categories": [
+                        {
+                            "category": 1,
+                            "label": "from to",
+                            "range": {
+                                "from": 55.578792572021484,
+                                "to": 105.9543285369873,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 0.03262563239683668},
+                                {"unit": "square meters", "value": 84500},
+                                {
+                                    "unit": "square kilometers",
+                                    "value": 0.08449999999999999,
+                                },
+                                {"unit": "acres", "value": 20.880404733975443},
+                                {"unit": "hectares", "value": 8.450000000000001},
+                                {"unit": "cell counts", "value": 845},
+                                {"unit": "% cover", "value": 3.321018707750354},
+                            ],
+                        },
+                        {
+                            "category": 2,
+                            "label": "from to",
+                            "range": {
+                                "from": 105.9543285369873,
+                                "to": 156.32986450195312,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 0.9497726997985628},
+                                {"unit": "square meters", "value": 2459900},
+                                {
+                                    "unit": "square kilometers",
+                                    "value": 2.4598999999999998,
+                                },
+                                {"unit": "acres", "value": 607.8545278710792},
+                                {"unit": "hectares", "value": 245.99},
+                                {"unit": "cell counts", "value": 24599},
+                                {"unit": "% cover", "value": 96.67898129224965},
+                            ],
+                        },
+                    ],
+                },
+                {
+                    "category": 4,
+                    "label": "RALEIGH-CITY",
+                    "units": [
+                        {"unit": "square miles", "value": 6.1974801876282175},
+                        {"unit": "square meters", "value": 16051400},
+                        {"unit": "square kilometers", "value": 16.0514},
+                        {"unit": "acres", "value": 3966.387320082052},
+                        {"unit": "hectares", "value": 1605.14},
+                        {"unit": "cell counts", "value": 160514},
+                        {"unit": "% cover", "value": 7.926617283950617},
+                    ],
+                    "categories": [
+                        {
+                            "category": 1,
+                            "label": "from to",
+                            "range": {
+                                "from": 55.578792572021484,
+                                "to": 105.9543285369873,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 5.062455672160989},
+                                {"unit": "square meters", "value": 13111700},
+                                {
+                                    "unit": "square kilometers",
+                                    "value": 13.111699999999999,
+                                },
+                                {"unit": "acres", "value": 3239.971630183027},
+                                {"unit": "hectares", "value": 1311.17},
+                                {"unit": "cell counts", "value": 131117},
+                                {"unit": "% cover", "value": 81.68570965772456},
+                            ],
+                        },
+                        {
+                            "category": 2,
+                            "label": "from to",
+                            "range": {
+                                "from": 105.9543285369873,
+                                "to": 156.32986450195312,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 1.1350245154672285},
+                                {"unit": "square meters", "value": 2939700},
+                                {
+                                    "unit": "square kilometers",
+                                    "value": 2.9396999999999998,
+                                },
+                                {"unit": "acres", "value": 726.415689899025},
+                                {"unit": "hectares", "value": 293.97},
+                                {"unit": "cell counts", "value": 29397},
+                                {"unit": "% cover", "value": 18.31429034227544},
+                            ],
+                        },
+                    ],
+                },
+                {
+                    "category": 5,
+                    "label": "RALEIGH-SOUTH",
+                    "units": [
+                        {"unit": "square miles", "value": 47.39913650957801},
+                        {"unit": "square meters", "value": 122763200},
+                        {"unit": "square kilometers", "value": 122.7632},
+                        {"unit": "acres", "value": 30335.44736612987},
+                        {"unit": "hectares", "value": 12276.32},
+                        {"unit": "cell counts", "value": 1227632},
+                        {"unit": "% cover", "value": 60.6238024691358},
+                    ],
+                    "categories": [
+                        {
+                            "category": 1,
+                            "label": "from to",
+                            "range": {
+                                "from": 55.578792572021484,
+                                "to": 105.9543285369873,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 24.823086925931666},
+                                {"unit": "square meters", "value": 64291500},
+                                {"unit": "square kilometers", "value": 64.2915},
+                                {"unit": "acres", "value": 15886.775632596238},
+                                {"unit": "hectares", "value": 6429.150000000001},
+                                {"unit": "cell counts", "value": 642915},
+                                {"unit": "% cover", "value": 52.37033573579053},
+                            ],
+                        },
+                        {
+                            "category": 2,
+                            "label": "from to",
+                            "range": {
+                                "from": 105.9543285369873,
+                                "to": 156.32986450195312,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 22.576049583646338},
+                                {"unit": "square meters", "value": 58471700},
+                                {"unit": "square kilometers", "value": 58.4717},
+                                {"unit": "acres", "value": 14448.671733533633},
+                                {"unit": "hectares", "value": 5847.17},
+                                {"unit": "cell counts", "value": 584717},
+                                {"unit": "% cover", "value": 47.62966426420947},
+                            ],
+                        },
+                    ],
+                },
+                {
+                    "category": 6,
+                    "label": "RALEIGH-WEST",
+                    "units": [
+                        {"unit": "square miles", "value": 8.069110401162725},
+                        {"unit": "square meters", "value": 20898900},
+                        {"unit": "square kilometers", "value": 20.898899999999998},
+                        {"unit": "acres", "value": 5164.230656744135},
+                        {"unit": "hectares", "value": 2089.8900000000003},
+                        {"unit": "cell counts", "value": 208989},
+                        {"unit": "% cover", "value": 10.320444444444444},
+                    ],
+                    "categories": [
+                        {
+                            "category": 1,
+                            "label": "from to",
+                            "range": {
+                                "from": 55.578792572021484,
+                                "to": 105.9543285369873,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 0.23822503182068916},
+                                {"unit": "square meters", "value": 617000},
+                                {"unit": "square kilometers", "value": 0.617},
+                                {"unit": "acres", "value": 152.4640203652408},
+                                {"unit": "hectares", "value": 61.7},
+                                {"unit": "cell counts", "value": 6170},
+                                {"unit": "% cover", "value": 2.9523084947054627},
+                            ],
+                        },
+                        {
+                            "category": 2,
+                            "label": "from to",
+                            "range": {
+                                "from": 105.9543285369873,
+                                "to": 156.32986450195312,
+                            },
+                            "units": [
+                                {"unit": "square miles", "value": 7.8308853693420355},
+                                {"unit": "square meters", "value": 20281900},
+                                {"unit": "square kilometers", "value": 20.2819},
+                                {"unit": "acres", "value": 5011.766636378894},
+                                {"unit": "hectares", "value": 2028.19},
+                                {"unit": "cell counts", "value": 202819},
+                                {"unit": "% cover", "value": 97.04769150529454},
+                            ],
+                        },
+                    ],
+                },
+            ],
+            "totals": [
+                {"unit": "square miles", "value": 78.18568710484531},
+                {"unit": "square meters", "value": 202500000},
+                {"unit": "square kilometers", "value": 202.5},
+                {"unit": "acres", "value": 50038.839747100916},
+                {"unit": "hectares", "value": 20250},
+                {"unit": "cell counts", "value": 2025000},
+                {"unit": "% cover", "value": 100},
+            ],
+        }
+        module = SimpleModule(
+            "r.report",
+            map="towns,elevation",
+            units=[
+                "miles",
+                "meters",
+                "kilometers",
+                "acres",
+                "hectares",
+                "cells",
+                "percent",
+            ],
+            nsteps=2,
+            format="json",
+        )
+        self.runModule(module)
+        data = json.loads(module.outputs.stdout)
+        self._assert_report_equal(reference, data)
 
 
 if __name__ == "__main__":