- To back up your Zotero library, you will need to locate the Zotero Data Directory, where your Zotero library is stored on your computer.
- To do this, open Preferences via the Gear menu.
- Next, select the Advanced tab and then the Files and Folders sub-tab.
- Now, select the Show data directory button.

- Your data directory will now be open.
- Reduce, BUT DO NOT CLOSE, the data directory window.
- Next, close Zotero and Firefox [It is not enough to just close the Firefox window, you must exit Firefox via the top menu.]
- Now, go back to the data directory window. You may need to move to the next higher level in the file directory in order to find the Zotero folder.

- Once you find the Zotero folder, copy it.

- Finally, paste the Zotero folder to another location, such as a flash drive.
- You have successfully backed up your Zotero Library.
**Warning: Exporting and importing your library (for instance via Zotero RDF) is not a recommended option. None of the available export formats allow for a complete transfer of your library data.