diff --git a/lib/www/server/lib/utils/flattenQCDefinitions.js b/lib/www/server/lib/utils/flattenQCDefinitions.js
new file mode 100644
index 0000000..2aaf78f
--- /dev/null
+++ b/lib/www/server/lib/utils/flattenQCDefinitions.js
@@ -0,0 +1,27 @@
+
+/** Convert QC definitions tree into a flat list.
+ */
+function flattenQCDefinitions(items, keywords=[], labels=[], disabled=false) {
+	const result = [];
+
+	if (items) {
+		for (const item of items) {
+			if (!item.children) {
+				result.push({
+					...item,
+					iterate: (item.iterate ?? "shots"),
+					labels: labels.concat(item.labels??[]),
+					disabled: (item.disabled ?? disabled)
+				});
+			} else {
+				const k = [...keywords, item.name];
+				const l = [...labels, ...(item.labels??[])];
+				const d = item.disabled ?? disabled
+				result.push(...flattenQCDefinitions(item.children, k, l, d))
+			}
+		}
+	}
+	return result;
+}
+
+module.exports = flattenQCDefinitions;
diff --git a/lib/www/server/lib/utils/index.js b/lib/www/server/lib/utils/index.js
index dc020f7..1d56a1a 100644
--- a/lib/www/server/lib/utils/index.js
+++ b/lib/www/server/lib/utils/index.js
@@ -2,5 +2,6 @@
 module.exports = {
 	geometryAsString: require('./geometryAsString'),
 	dms: require('./dms'),
-	replaceMarkers: require('./replaceMarkers')
+	replaceMarkers: require('./replaceMarkers'),
+	flattenQCDefinitions: require('./flattenQCDefinitions')
 };