Combine multiple .jwlibrary backups into one clean, consolidated file. Built to run entirely offline on your device — your files never leave your computer or phone.
Designed from the ground up to be so simple a kid or an 80-year-old can merge backups in seconds.
No uploads, no cloud servers, and no user accounts. Your backup files stay safely on your device while merging.
Intelligently resolves overlapping entries so your study notes, bookmarks, and highlights are unified cleanly.
Clean, accessible layout with zero clutter. Select your files, click merge, and download your unified backup.
JW Fusion extracts and merges all core personal study data recorded in JW Library backups:
Simple, fast, and safe. No technical setup required.
Export your backup files from JW Library on your phone, tablet, or computer, and drag them into JW Fusion.
JW Fusion reads the SQLite databases inside your backups and merges all notes, highlights, bookmarks, tags, and playlists.
Download your new combined .jwlibrary file and restore it directly back into JW Library.