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diff --git a/keyboards/handwired/hillside/48/keymaps/json2hill48.py b/keyboards/handwired/hillside/48/keymaps/json2hill48.py
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+#!/usr/bin/env python3
+
+# Copyright 2020-2022 Pierre Viseu Chevalier, Michael McCoyd (@pierrechevalier83, @mmccoyd)
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+"""Pretty print keymap json in more readable row/side organized format, based on ROW_SIZES."""
+
+import argparse
+import json
+import sys
+from typing import NamedTuple
+
+"""Print keymap json in row and side format, though as still re-readable json.
+
+For example, for one layer:
+
+ ["KC_TAB" , "KC_Q" , "KC_W" , "KC_E" , "KC_R" , "KC_T",
+ "KC_Y" , "KC_U" , "KC_I" , "KC_O" , "KC_P" , "KC_BSPC",
+
+ "KC_LCTL", "KC_A" , "KC_S" , "KC_D" , "KC_F" , "KC_G",
+ "KC_H" , "KC_J" , "KC_K" , "KC_L" , "KC_SCLN", "KC_QUOT",
+
+ "KC_LSFT", "KC_Z" , "KC_X" , "KC_C" , "KC_V" , "KC_B" , "KC_GRV",
+ "KC_ESC" , "KC_N" , "KC_M" , "KC_COMM", "KC_DOT" , "KC_SLSH", "KC_RSFT",
+
+ "KC_ENT" , "KC_LGUI", "KC_LALT", "MO(5)" , "MO(3)",
+ "MO(4)" , "KC_SPC" , "KC_LALT", "KC_RGUI", "KC_APP"
+ ],
+"""
+
+# The structure of the keymap. Tuples describing row sizes.
+# (<Keys upto and including (one-indexed) keycount x> <are in half rows of y>)
+ROW_SIZES = [(24, 6),
+ (38, 7),
+ (48, 5),
+ ]
+
+###
+### Below here should not need to changed for different keyboards
+###
+
+LAST_KEY = ROW_SIZES[-1][0] - 1
+
+indent_level=4 # number of spaces of initial indent per output line
+
+def parse_cli():
+ parser = argparse.ArgumentParser(description='Hillside keymap formatter')
+ parser.add_argument("--input", type=argparse.FileType('r'),
+ default=sys.stdin, help="Input keymap "
+ "(json file produced by qmk configurator)")
+ return parser.parse_args()
+
+class Column(NamedTuple):
+ """Column number within keymap side, if it ends side, and ends row.
+
+ Position within a keyboard row runs from 0 to n and again 0 to n"""
+ num: int
+ ends_side: bool
+ ends_row: bool
+
+def get_col(key_index):
+ """Return Column for key_index."""
+ index_prior = 0 # index of last key in rows of the prior size
+ for keys_upto, num_cols in ROW_SIZES: # For row sizes from top
+ if key_index < keys_upto: # Find range key_index is in
+ col_num = (key_index - index_prior) % num_cols
+ return Column(col_num, # Return column plus side and row ends flags
+ ends_side=col_num == num_cols - 1,
+ ends_row=(keys_upto - 1 - key_index) %
+ (2 * num_cols) == 0)
+ index_prior = keys_upto # Big O: row ranges * keys, but range is small
+
+def format_layers(layers):
+ formatted = indent_level * " " + "\"layers\": [\n"
+
+ # Find max key length per column
+ max_key_length = {}
+ for layer in layers:
+ for (index, keycode) in enumerate(layer):
+ col = get_col(index)
+ max_length = max_key_length.get(col.num)
+ if (not max_length) or len(keycode) > max_length:
+ max_key_length.update({col.num: len(keycode)})
+ # Format each layer
+ for (layer_index, layer) in enumerate(layers):
+ # Opening [
+ formatted += 2 * indent_level * " "
+ formatted += "["
+
+ # Split keys into pairs of left and right rows by key row length
+ for (index, keycode) in enumerate(layer):
+ col = get_col(index)
+
+ # Indent for rows past first
+ if col.num == 0 and index != 0:
+ formatted += (1 + 2 * indent_level) * " "
+
+ # Print key
+ formatted += json.dumps(keycode)
+
+ # End layer, or end side, or space to next key
+ if index == LAST_KEY:
+ formatted += "\n"
+ elif col.ends_side:
+ formatted += ",\n"
+ else:
+ n_spaces = max_key_length[get_col(index).num] - len(keycode)
+ formatted += n_spaces * " "
+ formatted += ", "
+
+ # Split groups of row sides
+ if col.ends_row:
+ formatted += "\n"
+
+ # Closing ] with , or without
+ formatted += 2 * indent_level * " "
+ if layer_index < len(layers) - 1:
+ formatted += "],\n"
+ else:
+ formatted += "]\n"
+
+ formatted += indent_level * " "
+ formatted += "]"
+
+ return formatted
+
+def format_keymap(keymap_json):
+ formatted = "{"
+ for (index, k) in enumerate(keymap_json):
+ if k == "layers":
+ formatted += format_layers(keymap_json[k])
+ else:
+ formatted += f"{indent_level * ' '}{json.dumps(k)}: {json.dumps(keymap_json[k])}"
+ if index < len(keymap_json) - 1:
+ formatted += ","
+ formatted += "\n"
+ formatted += "}"
+ return formatted
+
+def main():
+ args=parse_cli()
+ keymap_json = json.loads(args.input.read())
+ print(format_keymap(keymap_json))
+
+if __name__ == "__main__":
+ main()