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Zotero: Syncing Your Data

This guide will help you use the free online citation and research management tool Zotero to organize citations from Library catalogs and databases.

Your Zotero Files

To determine where your Zotero data is being stored, go to the Advanced tab of Zotero Preferences and look under "Files and Folders."  The default directory is listed under "Data Directory Location."

Location of data directory

Syncing your data and files

All of the item information, notes, and attachments imported into your Zotero collection are stored locally in this directory on your computer. The Zotero library data -- item information, notes, tags, etc. -- are included in the zotero.sqlite file. Your attachments -- PDFs, web snapshots, audiofiles, etc. -- are in the storage folder.  If you would like to be able to access your collections from any computer connected to the Internet, then you must register with Zotero for an account and sync your data between your computer and Zotero's servers.

Data syncing

Everything in your collections, including notes, links, and tags, will be saved to the server. There is no limit to the amount of data that can be synced. (Note this is different from File Syncing, which is covered below.)

After you have registered with Zotero, open Zotero's Sync preferences tab and enter your login information in the Zotero Sync Server section.

Data syncing screen

At the next screen you will be provided with options for Data Syncing.  If you choose Sync Automatically, each time changes are made, Zotero will automatically sync your data. If you disable this option, you can sync manually at any time by clicking the “Sync with Zotero Server” button (sync icon) on the right-hand side of the Zotero application.  Attached PDFs are only indexed on the computer where they are added. "Sync full-text content" syncs the index across computers, ensuring that the full text search includes all files, regardless of where they were indexed.

setting up preferences

By default, Zotero will merge your local Zotero library with your library on—any changes you make in one place will be applied to the other and on all other synced computers. If an item has changed in multiple places between syncs, you'll receive a conflict resolution dialog asking which version you'd like to keep. In the rare case that you want to completely overwrite your server library with the contents of your local library or vice versa, you can use the Sync Reset Options.

File syncing with Zotero

In the image above, the options for File Syncing with Zotero are selected. Data syncing syncs library items, but doesn't sync attached files (PDFs, audio and video files, images, etc.).  The options here allow you to set up file syncing to accompany data syncing, using Zotero File Storage. Each Zotero user is given 300 MB of free Zotero File Storage for attached files, with larger storage plans available for purchase.

File syncing with WebDAV

Another option for remote storage of files is to use a WebDAV service. Zotero does not provide support for third party WebDAV providers and when you set it up, you should make sure to use the "Verify Server" option to ensure that Zotero can successfully verify the WebDAV account. 

Note: has ended its support for WebDAV. 

pCloud is one WebDAV option listed by Zotero that provides 10GB free storage. 

  1. Go to and create an account. It is not necessary to download the pCloud client, although you get additional free storage for doing so.
  2. In Zotero, change the WebDAV url to:
  3. Enter the username and password for the pCloud account you created
  4. Verify the server. A pop-up window will say the folder does not exist. Click "Create."
  5. Verify the server again.
  6. If you have been using a different WebDAV server, go to Edit > Preferences > Sync > Reset and choose the "Reset File Sync History" option. Then click on Reset. Go to your Zotero application and click on the sync command and the files will be uploaded to pCloud.

File syncing with ZotFile

If you use the ZotFile plugin for Zotero, you can use any cloud service to keep your library synced across computers, such as Dropbox or Sync. See the ZotFile tab for more instructions.