The bookmarks.getSubTree() method asynchronously retrieves a bookmarks.BookmarkTreeNode, given its ID.

If the item is a folder, you can access all its descendants recursively using its children property and the children property of its descendants, if they are themselves folders.

This is an asynchronous function that returns a Promise.


var gettingSubTree = browser.bookmarks.getSubTree(
  id                     // string


A string specifying the ID of the root of the subtree to retrieve.

Return value

A Promise that will be fulfilled with an array containing a single object, a bookmarks.BookmarkTreeNode object, representing the item with the given ID.

If a node corresponding to id could not be found, the promise will be rejected with an error message.

Browser compatibility

Chrome Edge Firefox Firefox for Android Opera
Basic support Yes No 45.0 No 33


This example recursively prints out the subtree under a given node:

function makeIndent(indentLength) {
  return ".".repeat(indentLength);

function logItems(bookmarkItem, indent) {
  if (bookmarkItem.url) {
    console.log(makeIndent(indent) + bookmarkItem.url);
  } else {
    console.log(makeIndent(indent) + "Folder");
  if (bookmarkItem.children) {
    for (child of bookmarkItem.children) {
      logItems(child, indent);

function logSubTree(bookmarkItems) {
  logItems(bookmarkItems[0], 0);

function onRejected(error) {
  console.log(`An error: ${error}`);
var subTreeID = "unfiled_____";

var gettingSubTree = browser.bookmarks.getSubTree(subTreeID);
gettingSubTree.then(logSubTree, onRejected);


This API is based on Chromium's chrome.bookmarks API. This documentation is derived from bookmarks.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

Document Tags and Contributors

 Contributors to this page: jerrykrinock, wbamberg, Makyen, Sheppy
 Last updated by: jerrykrinock,