How To Backup Library In Calibre Ebook Program Safely?

I've put years into my digital book collection and I'm paranoid about losing metadata or custom covers. What's your secure backup method for the Calibre database itself?
2026-07-27 10:31:09
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11 Answers

Best Answer
teinakoreglassie07
teinakoreglassie07
Backups of a safe Calibre library should be exported from the folder of the library in question as a simple export of the folder to an external drive or to cloud storage. Ensure the ‘Calibre Library’ folder is closed prior to copying to prevent writing of changes and thus corruption. I keep the primary copy of my e-book library on my desktop’s SSD, and maintain a mirrored copy on my NAS. I’d like to suggest a thought experiment for a ‘build’ of ‘Apocalypse: Rebirth With An Infinite Storage System’. In this version of the story, the primary cheat of the protagonist is to amass unlimited quantities of everything, in a pocket dimension of infinite storage. He’s the ultimate survivalist as society collapses around him.
2026-08-01
Isaac
Isaac
I take a very simple approach to backing up my Calibre library. I first locate the Calibre library folder (usually under ‘Documents’ where I set up Calibre initially). I make a copy of the entire folder, and then copy to a USB drive. I also use cloud backup in the form of SyncThing which then automatically synchronizes that folder with my server at home.

If you’re into scripting then you can set up Calibre backups using rsync or FreeFileSync. I have a plain text file that I update as I add books to my library. It’s a quick 10 minute job every now and then to update my backups with the latest books and also to save off the settings for any installed plugins. To save off the settings for your plugins you can export them from Preferences > Plugins.
2026-07-28
Quinn
Quinn
Backups for your Calibre library are important. The safest approach is to export your entire Calibre library folder on a regular basis (e.g., every month or two) and store it on an external hard drive and in cloud storage like Google Drive or Dropbox.

Also worth noting is Calibre’s ability to automate the backup of your library. Enable this under ‘Preferences > Misc > Backup’ and your library will be backed up from time to time. However, I recommend also manually creating a full backup of your library on a monthly basis. For those with little storage space on their computer, you can simply create a ZIP file of the library folder before uploading it to the cloud. As I said earlier, losing an ebook collection is like losing a piece of your soul – don’t risk it by not creating backups!
2026-07-28
mona marquis
mona marquis
I'm a K.I.S.S. kind of guy (Keep It Simple, Stupid). I have two external hard drives that I’ve labeled “Backup A” and “Backup B”. Every 1st and 15th of the month, I plug in a different one, and use Teracopy to perform a verified backup of my entire Calibre Library folder. I also backup the config folder for Calibre. That’s it. No scripts to maintain, no cloud-based backup services to manage, and no NAS to set up and maintain. Since I only connect the drives to be backed up in the process, the external hard drives will be safe from malware as well. One of the hard drives will be at my house, and the other at my desk at work. The 3-2-1 rule for backups (three copies of your data, two types of media (in this case, internal hard drives and external hard drives), one of which is offsite) is easy enough to implement, and does not require any advanced technical knowledge. For a library of less than 500GB in size, it’s also very cheap to implement and maintain, and can be easily understood by anyone.
2026-07-28
Isla
Isla
Back up your Calibre library. Insure the digital bookshelf that you care so very much about. I do this on a weekly basis for my rather sizeable collection. Here is how I go about doing this:

I also like to back up the Calibre database files (the metadata.db file is only a few KB, so no problem to back up). For this I use versioning, e.g. I use BorgBackup to create historic copies of my library. It’s always a good idea to test the restoration of a backup from time to time. A dead backup is worse than no backup at all.
2026-07-29
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