Multiple backups. Merged. Without losing anything.
JW Merge brings together highlights, notes and bookmarks from all your devices into a single backup. Everything happens in your browser: nothing is sent, the original files are never deleted.
Add
Drop your .jwlibrary files. They never leave your device.
Merge
Everything is faithfully merged, and we show you the rare choices to make yourself.
Download
Get a single backup, ready to reimport into JW Library.
How it works, in detail.
The principle is simple: everything is kept. Here is exactly how each case is handled, including the rare moments where it's up to you to choose.
Are my original files modified?
No, never. Everything happens in your browser: your .jwlibrary files are never sent, modified or deleted. You get a brand-new backup, and your originals stay intact as a safety net.
How are highlights brought together?
Every highlight from every device is kept. When two devices highlight different passages, they simply add up. A “conflict” only appears when the same passage is highlighted in two different colors depending on the device.
What does “keep all” mean when highlights overlap?
By default nothing is lost: both colors are kept and overlap on the passage, exactly as if you had highlighted twice in JW Library. If you prefer a single color, you can choose, passage by passage, which version to keep.
When can there be a loss, and what is kept?
There is a loss only if you decide to keep a single version of a conflicting passage. In that case only the highlight that actually overlaps is removed, never the other highlights of the “losing” device. For small publications we suggest the most complete version by default (the most highlights), but you stay in control. For the Bible and heavily annotated documents we never decide for you: it's always a manual choice.
What about my notes?
Each note is tracked individually. If the same note was edited differently on two devices, we keep the most recent version by default and show you both, so you can compare, choose, or combine both versions into a single note. Nothing is lost without your say-so.
How do bookmarks work?
All your bookmarks are carried over. JW Library limits each publication to 10 bookmarks. If merging your devices pushes a publication past that limit, the extra bookmarks are first moved to a free slot when possible. Beyond 10, those that don't fit can't be kept, so we list them by name so you know exactly which ones.
What about my study answers?
They are all carried over. If the same question has a different answer depending on the device, we keep the most complete answer (the longest one).
What if a backup comes from a newer version of JW Library?
JW Merge merges everything it recognizes. If a backup contains data from a version newer than what we can handle, that specific data is neither invented nor merged: it is clearly flagged in the result, and everything else is brought together normally.