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Zotero File Storage

Zotero File Storage is a cloud-based syncing and storage solution for PDFs, images, web snapshots, and any other files attached to your Zotero libraries. Zotero File Storage synchronizes the files in your personal Zotero library to all your computers, allows you to share the files in your group libraries, and makes files available through the website.

Each Zotero user is given 300 MB of free Zotero File Storage, with larger storage plans available for purchase. To check your current usage and/or sign up for additional storage, visit the storage settings of your Zotero account. You can then configure your storage settings through your Zotero client's Sync preferences.

Zotero File Storage services are provided by the Corporation for Digital Scholarship.

Storage Pricing

Zotero File Storage offers tiered pricing to accommodate a broad range of users. Our architecture can support storage levels up to any size, so if you don't find what you're looking for here, please let us know. We'll be happy to work with you or your institution, lab, or research group to offer a customized and affordable solution.

Storage Quota Cost
300 MB Free
2 GB $20/year ($1.67/month)
6 GB $60/year ($5/month)
10 GB $100/year ($8.25/month)
25 GB $240/year ($20/month)
more than 25 GB Please contact

In addition to these individual storage plans, we also offer institutional storage plans.

Comparison of Collaboration Costs

Zotero charges no additional fees for collaboration. In fact, there are no limits on the number of collaborators you may work with and no restraints on how you use your library data and storage.

# of Collaborators Zotero Mendeley
5 Free $1089 ($99/month)
10 Free $1639 ($149/month)
25 Free $3289 ($299/month)
50 Free $6039 ($549/month)
more than 50 Free Unknown, probably a lot

Using Zotero File Storage for Group Libraries

Closed public and private groups can use Zotero File Storage for file syncing as long as the group owner has storage space available and has opted to use Zotero File Storage for group files. Group file storage draws from the storage account of the group owner, not from the group's members. Group owners can freely allocate their storage usage between personal and group libraries. There are no restrictions on the number of group libraries that users can create and no limits on the number of users who may access these libraries.

More Information

Still have questions? See the storage FAQ.