FAQ

Is PaperHub free?

Yes, completely free. All data comes from the Crossref API which is freely available.

How many papers are indexed?

Over 150 million scholarly works from Crossref, including journal articles, conference papers, books, and datasets.

Can I access full text?

PaperHub shows metadata and citation information. Click the DOI link to access the full paper on the publisher site. Open access papers will have direct PDF links when available.

How are citations counted?

Citation counts come from Crossrefs citation network, which tracks references between DOI-registered works.

How often is data updated?

Search results are cached for up to 24 hours. Crossref itself is updated continuously by publishers.