--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/docs/examples/copy-outline.js	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,36 @@
+// Copy an outline from one document to another PDF file.
+// Can be used to transfer outlines when converting from another format into PDF.
+// Can also be used to change outlines to use page numbers instead of named destinations.
+
+if (scriptArgs.length != 3) {
+	print("usage: mutool run copy-outline.js a.xps b.pdf output.pdf");
+	quit();
+}
+
+function copy_outline_rec(cursor, input, list) {
+	list.forEach(function (node) {
+		var page = input.resolveLink(node.uri)
+		cursor.insert({ title: node.title, uri: "#page=" + (page + 1) })
+		if (node.down) {
+			cursor.prev()
+			cursor.down()
+			copy_outline_rec(cursor, input, node.down)
+			cursor.up()
+			cursor.next()
+		}
+	})
+}
+
+function copy_outline(output, input, list) {
+	var cursor = output.outlineIterator()
+	while (cursor.item())
+		cursor.delete()
+	copy_outline_rec(cursor, input, list)
+}
+
+var input = mupdf.Document.openDocument(scriptArgs[0])
+var output = mupdf.Document.openDocument(scriptArgs[1])
+
+copy_outline(output, input, input.loadOutline())
+
+output.save(scriptArgs[2], "incremental");