Who relies on Crossref metadata?

Over 100 Million unique scholarly works are distributed into systems across the research enterprise 24/7 via our APIs at a rate of around 633 Million queries a month. ————————————————————————————————————————

We use Crossref metadata to…

“Add funding info from publications to researchers’ portfolios, and report the publications as arising from the grant; to validate the data provided by universities; and we use the license and embargo period information to help understand the open access status of publications.” Gavin Reddick, Researchfish

“Link references on our journal platforms, pull citations statistics for our Article-Level Metrics and ensure we are publishing unique science. Crossref metadata is vital to our everyday operations and the discovery of the research we publish.” Polina Grinbaum, PLOS

“Enhance and correct the metadata delivered to us, just with a correct DOI” Ulf Kronman, National Library of Sweden

“Verify and correct references, retrieve Funder Registry IDs, and include Cited-by links in published content, and so much more. As a small publisher, discoverability is of utmost importance, and Crossref is a discoverability hub. The inclusion of metadata in Crossref strengthens the content we publish. ” _ Rob O’Donnell, Rockefeller University Press_

“Know about our possible ‘universe’ of articles.” Christian Herzog, Daniel Hook, Simon Porter, Dimensions, Digital Science

“Connect authors with research articles similar to their own, and help them decide where to submit their manuscripts for the best chance of success.” Damian Pattinson, ResearchSquare

“Index preprints alongside traditional journal publications and we plan to: provide another means to access and discover preprints; help explore the role of preprints in the publishing ecosystem; support their inclusion in processes such as grant reporting and credit attribution systems.” Michael Parkin, Europe PMC

“Look across the world at research outputs and understand how institutions and communities are making them more accessible. We’re using Crossref metadata as the central reference point to handle objects from different sources and to have a consistent set of metadata on things like publication date that covers the full set.” Cameron Neylon, Centre for Culture and Technology, Curtin University

“Allow researchers to immediately interact with the readers of their works, if the publishers provide ORCID iDs of authors in their Crossref metadata.” Alexander Naydenov, PaperHive

“Check for the availability of articles associated with our data packages, and to verify some of our metadata. Being able to do this programmatically has revolutionized our data publication workflow.” - Elizabeth Hull, Dryad

“Retrieve Cited-by counts for a DOI so we can include them as part of the ‘basket of metrics’ we provide to our researchers. They can then understand the performance of their publications in context, and see the correlation between actions and results.” David Sommer, Kudos

“Enable authors to search and add references to their papers.” Alberto Pepe, Authorea

“Enrich the metadata of our hosted preprints and link them to the manuscript or version of record. We also perform various analyses regarding the completeness and discoverability of our records.” Mark Hahnel, Figshare

“Streamline research communication in a global, interconnected and evolving scholarly domain in order to support researchers even better and facilitate research in general.” - Henning Schoenenberger, SpringerNature

“Identify articles unambiguously as we preserve scholarly literature in our system. Also, in the rare instances when we ‘trigger’ journals for open access, we want the reference-linking functionality to work, and we work with Crossref to point the URLs to our site for resolution.” Craig van Dyck, CLOCKSS

“Help Unpaywall identify and disambiguate over 20 million Open Access articles, and it is absolutely essential to our work. We 😍❤️🤗 Crossref!” Jason Priem, ImpactStory

You don’t have to sign up to anything in order to use our REST API. That means we don’t necessarily know who is using it, although we see millions of hits every day. If you are using it in your projects and would like to share, please let us know and we’ll add you to this page.

Here is a list of known projects that (to our knowledge) are using the REST API. Also take a look at some case studies on our blog.




Jisc Publications Router

Open Tree of Life (NSF)

Enriched Biodiversity

Journalhub showcase journal

Extensions to Wikimedia Visual Editor


CHORUS Dashboards

Search Crossref by funder name

PLOS Enhanced Citations Experiment

  • Maintained by: Adam Becker, PLoS
  • Using: Work queries and filters

PLOS ALM / Event Data

PKP OJS Crossref Plugin

  • Maintained by: Juan, James, Bozana, PKP
  • Using: deposits (xml deposits)

Crossref Crossmark Statistics

  • Maintained by: Joe Wass
  • Using: Work queries, date filters, significant update filters, update policy filter

 Crossref Metadata Participation

  • Maintained by: Joe Wass
  • Using: Publisher routes, publisher feature coverage values



*Cambia patent to scholarly literature citation matching*

  • Maintained by: Doug Ashton
  • Using: Work queries, deposits (patent citation deposits)

Last Updated: 2019 February 15 by Ginny Hendricks