Should You Post a Preprint? What Changes After You Do

A preprint is a complete manuscript posted on a public server before, or while, it is under journal review. Posting one is now routine in physics, mathematics, economics and much of biology, and increasingly accepted in medicine and the social sciences. It can establish priority, invite early feedback and make your work citable months before publication.

It also changes several things: journal policies, media rules, confidentiality, and who can read and reuse the work. Whether to post is a judgement about your field, your paper and your career stage, not a universal rule.

What a preprint is and is not

A preprint is a version of the manuscript, usually the submitted version, deposited on a server that assigns it a DOI. It is not peer reviewed, though some servers screen for scope and ethics. It is not a publication in the journal sense, but it is a public, citable record with a timestamp.

Common servers: arXiv for physics, mathematics and computer science; bioRxiv and medRxiv for life sciences and clinical work; SSRN for social sciences, law and economics; Research Square and Preprints.org for multidisciplinary work; and institutional repositories. Some journals also integrate with a server during submission.

The benefits

• Priority. The DOI and timestamp establish when the work existed publicly.
• Early feedback. Readers can comment before or alongside review.
• Visibility. Preprints are indexed by Google Scholar and often cited before publication.
• Openness. Readers without journal access can read the work immediately.
• Faster submission. Some journals review directly from the preprint or accept it as the submitted version.

The risks

• Journal policy. Most journals allow preprints, but not all, and some restrict the version or the licence. Check the journal's policy and Sherpa Romeo before posting.
• Scooping. A public preprint can be seen and built on by others; it also protects you, because the timestamp is evidence of priority.
• Media and confidentiality. If the paper has a patent application, clinical trial embargo or commercial partner, posting may conflict with those obligations. Talk to your technology-transfer office first.
• Clinical and sensitive data. For patient data or dual-use research, follow the relevant guidance and anonymise rigorously.
• Citation and review dynamics. A preprint can attract attention before review, including attention you cannot control.

What changes after you post

• The manuscript is public and citable; you may need to update the preprint after review.
• Journal submission usually requires declaring the preprint and its DOI.
• The published version may need a new licence and a note linking the versions.
• Media coverage should wait for peer review unless the journal and your institution agree otherwise.
• Peer review may comment on the preprint's reception, for better or worse.

How to choose a server

Choose the server your field reads. arXiv for physics and computer science, bioRxiv or medRxiv for life and clinical sciences, SSRN for law and social sciences, and a generalist server only if there is no field-specific option. Check the server's moderation policy, licence options and DOI assignment.

Journal policies in one paragraph

Most major publishers now permit preprints, including Elsevier, Springer Nature, Wiley, Taylor & Francis, MDPI and Frontiers, with varying rules about the version and the licence. A minority of journals treat preprints as prior publication; always check the specific journal rather than a publisher's general FAQ.

A decision checklist

• Does my field use preprints, and do the people I want to reach read them?
• Does the target journal allow preprints, and which version?
• Is there a patent, embargo or confidentiality obligation?
• Are the data and materials shareable, and is the manuscript anonymised if needed?
• Who will maintain the preprint if the paper changes?
• Am I ready for the work to be public and discussed?

If the answer to any of these is unclear, resolve it before posting. If it is clear and the field is preprint-friendly, the upside is usually worth it.

For the journal side, see how to choose a journal and how peer review works; to shortlist indexed titles, start with the free journal finder.