Detect changes in PDF bookmarks

Managing bookmarks from your code or from the bookmarks sidebar UI will trigger events you can listen to. The BookmarksChangeEvent gets triggered whenever a bookmark is created, updated, or deleted:

instance.addEventListener("bookmarks.change", () => {
  console.log("Your bookmarks changed!");
});

If you want more information about how exactly a bookmark has changed, there are several other more fine-grained events you can listen to. You’ll find more details about this in the API docs:

• BookmarksCreateEvent — Emitted whenever new bookmarks are created.
• BookmarksUpdateEvent — Emitted whenever bookmarks are updated.
• BookmarksDeleteEvent — Emitted whenever new bookmarks are deleted.
• BookmarksLoadEvent — Emitted whenever bookmarks are loaded from the bookmark provider.
• BookmarksWillSaveEvent and BookmarksDidSaveEvent — Emitted before and after bookmarks are saved to the bookmark provider.