If your JW Library notes and highlights have vanished, the first thing to check is whether they exist in a backup file, because in most cases the data is recoverable rather than gone for good. Notes and highlights are stored inside your device and can also be exported to a backup file (a `.jwlibrary` file), so a missing note usually points to an app update glitch, a reinstall without a restore, or a sync mismatch between devices. Below I walk through the common reasons this happens, the exact steps to get your data back, and a few habits that keep it from happening again.
Why your notes and highlights disappear
There isn't one single cause, which is part of what makes this frustrating. JW Library keeps your personal study data (notes, highlights, bookmarks, and input fields in publications) in a local database on each device. That database is not automatically synced to a central account across all your devices, and that detail explains a lot of the panic people feel.
The most common triggers I've seen reported:
You reinstalled the app or got a new phone and set it up fresh without importing a backup. When you delete JW Library, the local study data goes with it unless you exported a backup first.
An app update went sideways. After a major version bump, the app sometimes needs to migrate its internal database. If that migration is interrupted (low storage, a force close mid update, a crash), notes can appear missing even though the underlying file is intact.
You have the app on two devices and the highlights you made on your tablet aren't showing on your phone. This is not a bug so much as how the app works: study data doesn't roam automatically between installs the way a streaming watchlist might.
A publication was removed and re installed. Highlights are tied to a specific publication version. If a publication updates or you delete and re download it, the app can lose the link to notes attached to the old version.
Storage got full during a download or update, and the write to the database failed partway through.
None of these are pleasant, but the good news is that the first two, which cover the bulk of cases, are fixable if you have a backup or if you act before overwriting anything.
Check for an existing backup first
Before you touch anything else, stop making changes. Every time the app writes new data, it risks overwriting the file you might want back. So don't start re highlighting verses or poking around in settings randomly.
JW Library backups are single files with a `.jwlibrary` extension. If you ever tapped Export in the app, one of these files is sitting somewhere. Look in these places:
On Android, check your Downloads folder, the JW Library folder in internal storage, and any Google Drive or cloud folder you use. On iPhone or iPad, look in the Files app under On My iPhone and iCloud Drive. On Windows, check Documents and Downloads. On a Mac, check Downloads and iCloud.
If you use Google Drive, iCloud, Dropbox, or OneDrive, search those for `.jwlibrary` directly. People often export to cloud storage and forget about it. Even a backup from six months ago is better than nothing, and you can restore the old one and then re add anything newer by hand.
Restoring from a backup
Once you've located the file, the restore path is short. Open JW Library, go to the settings menu (the gear icon or the three line menu depending on your platform), find the backup and restore area, and choose Import or Restore. Point it at your `.jwlibrary` file and confirm.
One warning worth repeating: importing a backup replaces the current study data on that device with the contents of the backup. If you've added new notes since the backup was made, those newer notes get wiped by the restore. So if you have both an old backup and some recent notes you want to keep, jot the recent ones down first before restoring.
What to do if there's no backup at all
This is the harder situation, and I'll be honest with you: if the data was only ever on one device, you deleted the app, and you never exported a backup, the notes are very likely gone. There is no cloud copy on Watchtower's servers to pull down. The app is designed with local storage by choice.
That said, run through these checks before giving up:
Look on your other devices. If you ever installed JW Library on a second phone, an old tablet, or a computer and made even a few of the same highlights there, that device still holds its own database. Export a backup from it immediately.
Check if the app is simply pointed at the wrong congregation or language edition. Highlights attached to one Bible translation don't show when you switch to a different translation. Switch back to the version you originally used and see if they reappear.
If you're on a computer, check whether an old copy of the app data folder survived an uninstall. On Windows the data can sit in the AppData directory. This is a long shot, but recovery tools sometimes find deleted database files if the drive hasn't been heavily written since.
If none of that turns anything up, the practical move is to accept the loss, set up backups properly, and move on. It stings, especially if it was years of study notes, but chasing files that don't exist wastes energy.
Notes missing after a JW Library update
Updates are the sneakiest cause because the data usually isn't actually lost, it's just not displaying. The JW Library latest update cycle occasionally reshuffles how publications are indexed, and that can temporarily disconnect notes from their publications.
Try these steps in order. First, fully close the app and reopen it, which forces a fresh read of the database. Second, restart the device entirely. Third, check that the publication your notes were attached to is still downloaded and up to date, since a note tied to an outdated publication version may not surface until the publication is refreshed. Fourth, make sure you have free storage; a stuck migration from a half completed update often resolves once there's room to work.
If you're reading this ahead of the JW Library update 2026 rollout, the single best precaution is to export a backup before you install any large update. It takes under a minute and it turns a potential disaster into a non event.
Habits that prevent this from ever repeating
The fix for losing notes is boring and it works: export a `.jwlibrary` backup on a schedule and store it somewhere off the device. Once a month is reasonable for most people; weekly if you study heavily and add a lot of notes.
Save that backup to cloud storage, not just the device itself, so a lost or broken phone doesn't take your only copy with it. Keep more than one backup, dated in the filename, so you always have a fallback if a newer backup turns out to be corrupt or incomplete.
Before any big change, a new phone, an app reinstall, a major update, export a backup first. Treat it like buckling a seatbelt.
For deeper walkthroughs, screenshots of the export and import screens, and version specific notes on how each release handles study data, the JW Library app blog is a useful companion to this guide, since it tracks how the backup and restore flow shifts across updates and connects the dots between an update changelog and the exact steps you'd follow to protect your notes before installing. Reading it alongside the recovery steps above gives you both the fix for right now and the context to avoid needing the fix later.
FAQ
Are my JW Library notes stored online or only on my device?
They are stored locally on each device, not on a central online account. There is no automatic cloud sync of your notes and highlights across installs, which is why exporting a `.jwlibrary` backup and saving it to cloud storage yourself is the only reliable way to protect them.
Can I recover notes after deleting the app without a backup?
If the notes existed only on that one device and you never exported a backup, they are almost certainly unrecoverable, since deleting the app removes the local database. Your best hope is finding the same data on a second device you also used, or locating an old backup file in a Downloads or cloud folder.
Why did my highlights disappear after an update but the app still works?
The data is usually intact but temporarily disconnected from its publication during a database migration. Close and reopen the app, restart your device, confirm the relevant publications are downloaded and current, and free up storage so any stuck migration can finish.
Does importing a backup delete my current notes?
Yes. Importing replaces the current study data on that device with whatever is in the backup file. If you've added notes since the backup was created, write those newer ones down before restoring, because the import will overwrite them.
How often should I back up JW Library?
Once a month suits most people, and weekly makes sense if you add many notes. Save each backup to cloud storage with a date in the filename, and always export a fresh backup right before installing a major update or switching phones.
Final thoughts
Most "lost" notes in JW Library aren't truly gone, they're either sitting in a backup file you forgot about or hidden behind a stalled update, so start by checking for a `.jwlibrary` file before assuming the worst. If you take one thing from this guide, make it the monthly export saved to the cloud, described a couple of sections up, because that single habit is what turns the next update or new phone into a non issue. Go export a backup now while you're thinking about it.
Once you've worked through jw library lost notes and highlights, share this guide with anyone else who might be dealing with the same thing.
