The Frankfurt Book Fair is the largest book fair in the world, and therefore a key event on our calendar. Held annually in Frankfurt, Germany, the 77th Frankfurt Book Fair (October 15–19, 2025) saw 118,000 trade visitors and 120,000 private visitors from 131 countries. The Crossref booth was located, as usual, in Hall 4.0 where all the stands with information about academic publishing can be found. Four Crossref colleagues attended the Book Fair this year, and in this blog post, you can read more about their meetings, experiences, and plans.Â
TL;DR. Metadata Manager will be retired at the end of 2025. Over the past four years, we have been developing a new helper tool to replace it, and that tool has now reached a stage of maturity that means we will be able to switch off Metadata Manager by the end of the year.
Our REST API makes all of the metadata we hold publicly available. It receives the majority of our API traffic, with around 1 billion hits per month. It’s one of the key ways that we fulfil our mission to make research objects easy to find, cite, link, assess, and reuse. From 1 December 2025, we will be revising the rate limits for the public and polite pools of the REST API to ensure that we can maintain a stable and reliable system, and that metadata is freely available to everyone.
Noyam Journals, based in Accra, Ghana, was recently recognised for the completeness of its metadata through the Crossref Metadata Award, part of our 25th anniversary celebrations. Noyam was one of six publishers worldwide to receive the award and stood out as a leader among members of our Global Equitable Membership (GEM) Program.
We encourage you to include references (citation lists, bibliographies, data and software citations) with all content you register. A key benefit is that they will appear in Cited-by query results. You can include references when your first register your DOI records, or you can add them to existing DOI records later. Learn more about the benefits of registering your references.
Including references (or adding them to an existing deposit) can be done by:
Crossref XML plugin for OJS: You must first enable References as a submission metadata field and then enable the Crossref reference linking plugin, to include references in your initial deposit, or add them later.
Record registration form: Our new record registration form for journal articles has a built-in field for adding references. Learn more about how to use the record registration form.
Metadata Manager: If you’re still using the deprecated Metadata Manager, there’s a field where you can add references and Metadata Manager will attempt to match your references to their DOIs. If you want to add references to an existing deposit, simply find the existing record, add your references, and resubmit. Learn more about updating article metadata using Metadata Manager.
Simple Text Query allows you to both find the DOIs for your references and add them to the metadata for a DOI that you have already registered with Crossref. Please note that this method will overwrite any references previously deposited for the content item - if you’ve previously added references to an item, and want to add more references using Simple Text Query, you need to include both the existing and the new references in your deposit.
If your details have been entered correctly, you will see a success message, showing that your deposit has been submitted to the system queue for processing. When the reference deposit has been submitted, you will receive an email containing the XML deposit generated by the form. After that submission has been processed (usually within minutes of your submission), you will receive a submission log by email with the results of your submission.
