diff --git a/bin/keyboard_layouts.mjs b/bin/keyboard_layouts.mjs
new file mode 100644
index 000000000..4f8aa64eb
--- /dev/null
+++ b/bin/keyboard_layouts.mjs
@@ -0,0 +1,38 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+const DATA = {};
+
+for (let i = 2; i < process.argv.length; ++i) {
+  const filename = process.argv[i];
+  const key = path.basename(filename).split('.')[0];
+  const value = JSON.parse(fs.readFileSync(filename));
+  DATA[key] = value;
+}
+
+let keys = [];
+for (const map in DATA) {
+  keys = keys.concat(Object.keys(DATA[map]));
+}
+const KEYS = Array.from(new Set(keys)).sort();
+const ACC = Object.fromEntries(Object.keys(DATA).map((el, i) => [el, i]));
+const MAP = Object.fromEntries(KEYS.map(el => [el, []]));
+for (const key of KEYS) {
+  for (const map in ACC) {
+    MAP[key].push(DATA[map][key]);
+  }
+}
+
+// minify if all entries are of length 1
+for (const key in MAP) {
+  for (const c of MAP[key]) {
+    if (!c || c.length !== 1)
+      break;
+  }
+  MAP[key] = MAP[key].join('');
+}
+
+const FINAL = {acc: ACC, map: MAP};
+
+console.log(FINAL);
+console.log(JSON.stringify(FINAL).length);
diff --git a/fixtures/keyboard_layouts/DE_QWERTZ.json b/fixtures/keyboard_layouts/DE_QWERTZ.json
index acd512313..9f737086e 100644
--- a/fixtures/keyboard_layouts/DE_QWERTZ.json
+++ b/fixtures/keyboard_layouts/DE_QWERTZ.json
@@ -14,7 +14,7 @@
   "Digit7": "7",
   "Digit8": "8",
   "Digit9": "9",
-  "Equal": "'",
+  "Equal": "´",
   "IntlBackslash": "<",
   "KeyA": "a",
   "KeyB": "b",
diff --git a/fixtures/keyboard_layouts/FR_AZERTY.json b/fixtures/keyboard_layouts/FR_AZERTY.json
index a8e31bb12..5a5db35aa 100644
--- a/fixtures/keyboard_layouts/FR_AZERTY.json
+++ b/fixtures/keyboard_layouts/FR_AZERTY.json
@@ -1,21 +1,21 @@
 {
   "Backquote": "\u00b2",
-  "Backslash": "\u20ac",
+  "Backslash": "μ",
   "BracketLeft": "^",
   "BracketRight": "$",
   "Comma": ";",
-  "Digit0": "0",
+  "Digit0": "\u00e0",
   "Digit1": "&",
   "Digit2": "\u00e9",
   "Digit3": "\"",
   "Digit4": "'",
-  "Digit5": "",
-  "Digit6": "-",
+  "Digit5": "(",
+  "Digit6": "§",
   "Digit7": "\u00e8",
-  "Digit8": "*",
-  "Digit9": ")",
-  "Equal": "=",
-  "IntlBackslash": "\\",
+  "Digit8": "!",
+  "Digit9": "ç",
+  "Equal": "-",
+  "IntlBackslash": "<",
   "KeyA": "q",
   "KeyB": "b",
   "KeyC": "c",
@@ -42,9 +42,9 @@
   "KeyX": "x",
   "KeyY": "y",
   "KeyZ": "w",
-  "Minus": "_",
-  "Period": ".",
+  "Minus": ")",
+  "Period": ":",
   "Quote": "\u00f9",
   "Semicolon": "m",
-  "Slash": "/"
+  "Slash": "="
 }
\ No newline at end of file