How to back up JW Library the right way
A 30-second backup routine that protects years of JW Library study notes, highlights and bookmarks — and the common mistake that catches people out.
A proper JW Library backup takes half a minute and protects years of accumulated study. Most data loss stories start the same way: no recent .jwlibrary file existed when a phone was lost, reset or replaced.
Step by step
Create the backup
Open JW Library → Personal Study → three-dot menu → Backup and Restore → Create a backup. It produces a .jwlibrary file containing every note, highlight, bookmark and tag.
Store it somewhere off the phone
Email it to yourself, or save it to Google Drive, iCloud or OneDrive. A backup that only lives on the phone disappears with the phone.
Repeat on a schedule
Monthly is a good default; before any phone change, reset or OS update is essential. Keep older copies — the files are small, and an old backup has saved many people.
The common mistake: trusting the phone's own cloud backup
A whole-phone backup (Google One, iCloud device backup) often restores an old copy of JW Library's data — or none at all. The .jwlibrary file is the only backup you fully control and can carry between platforms. Treat the phone backup as a bonus, not the plan.
Ended up with two different backups?
It happens: one backup from the phone, an older one from a tablet, each with unique notes. You never have to choose between them — merge them into one complete file at jwsync.org, free and private, right in the browser.
Frequently asked questions
- How big is a backup file?
- Usually a few megabytes even for very large libraries — email-attachment small.
- Does creating a backup change anything on my phone?
- No. It only writes the file; your library is untouched.