Zotero

Simply visit your Zotero account profile and select a storage plan.

Zotero File Storage is a cloud-based storage solution for PDFs, images, web snapshots, and any other files attached to your Zotero personal and group libraries. Zotero File Storage allows you to access your Zotero-attached files from any computer with a web browser, and you can synchronize these files to any computer with Zotero installed. Zotero File Storage Services are provided by a third party, the Corporation for Digital Scholarship.

The Zotero server provides synchronization, group collaboration, and web access services for Zotero library metadata (bibliographic information), notes, and tags. Zotero server accounts are free. Zotero File Storage is an optional service that adds support for attached files like PDFs, images, and web snapshots to the Zotero server services. Depending on the quantity of files attached to your Zotero libraries, there may be fees associated with Zotero File Storage.

Group libraries can use Zotero File Storage as long as the group owner has storage space available and has opted to use Zotero File Storage for group files. A Zotero user's personal library and the libraries of any owned groups will all be deducted from that user's storage allotment. Group file storage always draws from the storage account of the group owner, not from the group's members.

Yes, you can still use WebDAV instead of Zotero File Storage to synchronize files attached to your personal Zotero library.

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.

Although on a per-user basis the cost of Zotero File Storage is quite low, in the aggregate it would be prohibitively expensive for the Zotero project to absorb the expense of providing petabytes of storage to its hundreds of thousands of users. The commodity costs associated with file storage and data transfer are potentially significantly higher than the overhead for developing and maintaining the Zotero client and server, services that have always been free for users. The Zotero project has never planned to monetize user data or otherwise profit from its users, and so there must be a means of recovering the costs associated with file storage.

Zotero File Storage involves more than just a pile of hard drives. The Zotero development team and the Corporation for Digital Scholarship have built an entire service architecture devoted to the needs of researchers, including the ability to move files seamlessly between group and personal libraries, and to access these files easily via the Zotero client or at zotero.org. Indeed, physically storing the files is just one component of a service that allows for real-time synchronization and distribution among multiple computers and individual and group users. Despite this complexity, Zotero File Storage pricing remains comparable to many far more basic, online backup services.

Zotero File Storage involves a customized data layer running on Zotero servers, backed by file storage hosted with Amazon's Simple Storage Service (S3). Because we understand the value you place on your data, we chose the most reliable, fastest, and best-designed cloud-based storage architecture on the planet.

4 GB. Please note that this limitation is imposed by Amazon S3.

All payment and billing information is handled only by Google Checkout. Zotero and the Corporation for Digital Scholarship never see your credit card number, only confirmation that your payment has been processed.