diff --git a/js/pmtiles.test.ts b/js/pmtiles.test.ts
index daf6bad..f7153fc 100644
--- a/js/pmtiles.test.ts
+++ b/js/pmtiles.test.ts
@@ -5,6 +5,7 @@ import {
 	getUint48,
 	queryLeafdir,
 	queryTile,
+	parseEntry,
 	Entry,
 	createDirectory,
 } from "./pmtiles";
@@ -112,4 +113,11 @@ test("convert spec v1 directory to spec v2 directory", (assertion) => {
 	assertion.ok(entry!.offset === 2);
 	entry = queryTile(view, 6, 2, 1);
 	assertion.ok(entry!.offset === 1);
+
+	entry = parseEntry(view, 0);
+	assertion.ok(entry!.offset === 1);
+	entry = parseEntry(view, 1);
+	assertion.ok(entry!.offset === 2);
+	entry = parseEntry(view, 2);
+	assertion.ok(entry!.offset === 3);
 });
diff --git a/js/pmtiles.ts b/js/pmtiles.ts
index cb199a2..2176a11 100644
--- a/js/pmtiles.ts
+++ b/js/pmtiles.ts
@@ -105,6 +105,19 @@ const entrySort = (a: Entry, b: Entry): number => {
 	return a.y - b.y;
 };
 
+export const parseEntry = (dataview: DataView, i: number): Entry => {
+	var z_raw = dataview.getUint8(i * 17);
+	var z = z_raw & 127;
+	return {
+		z: z,
+		x: getUint24(dataview, i * 17 + 1),
+		y: getUint24(dataview, i * 17 + 4),
+		offset: getUint48(dataview, i * 17 + 7),
+		length: dataview.getUint32(i * 17 + 13, true),
+		is_dir: z_raw >> 7 === 1,
+	};
+};
+
 export const createDirectory = (entries: Entry[]): ArrayBuffer => {
 	entries.sort(entrySort);
 
@@ -145,7 +158,7 @@ interface Zxy {
 	y: number;
 }
 
-// handle different leaf levels
+// TODO: handle different leaf levels
 export const deriveLeaf = (tile: Zxy): Zxy => {
 	let z7_tile_diff = tile.z - 7;
 	let z7_x = Math.trunc(tile.x / (1 << z7_tile_diff));
@@ -153,11 +166,6 @@ export const deriveLeaf = (tile: Zxy): Zxy => {
 	return { z: 7, x: z7_x, y: z7_y };
 };
 
-// needed to convert a spec v1 to a spec v2
-const sortEntries = (dataview: DataView): ArrayBuffer => {
-	return new ArrayBuffer(0);
-};
-
 interface Header {
 	version: number;
 	json_size: number;