Preprint Servers in Science
Preprint Servers and Pre-Publication Dissemination · Also known as: Preprints, Preprint Archives, Pre-publication Servers
Preprint servers are open-access repositories where researchers post manuscripts before, during, or alongside peer review at a formal journal. Preprints allow rapid, free dissemination of research findings without waiting for journal review (which can take 3–12 months). Major preprint servers include arXiv (physics, math, computer science; founded 1991), bioRxiv (biology; 2013), medRxiv (medicine; 2019), and others. Preprints are NOT peer-reviewed and should not be treated as final scientific evidence. However, they enable priority-claiming, feedback from the community, and rapid knowledge sharing in fast-moving fields. Many journals now accept manuscripts previously posted as preprints.
Read the full method
Sign in with a free account to read this section.
Method map
The neighbourhood of related methods — select a node to explore.
When to use it
Post a preprint when: (1) You have completed research and want rapid feedback before journal submission. (2) You want to establish priority for an idea or finding. (3) You want to make findings immediately available (especially urgent topics). Read preprints when: (1) Conducting a literature review in a fast-moving field (where journal lag is significant). (2) Seeking community feedback on recent work. (3) You understand the preprint is preliminary and corroborate key findings with peer-reviewed literature. Caution: Do not base clinical or policy decisions on preprints alone; wait for peer-reviewed publication.
Strengths & limitations
- Speed: findings disseminated within days or weeks, not months or years.
- Transparency: readers see pre-publication versions, showing the full research journey.
- Community feedback: crowdsourced comments and discussion improve manuscripts before formal peer review.
- Priority: timestamped posting establishes precedence for ideas and discoveries.
- Accessibility: free, open-access model makes research globally available.
- Lack of peer review: unvetted work can spread, including errors or fraud.
- Media misuse: preprints are sometimes reported as confirmed findings by journalists unfamiliar with the distinction.
- Quality variation: ranging from high-quality work to preliminary ideas; readers must judge critically.
- Permanence: preprints remain online even after being invalidated by peer review or retraction, creating confusion.
- Indexing gaps: some preprints are not indexed in major databases, making them harder to discover.
Frequently asked
Can I post a preprint if I am submitting the same manuscript to a journal?
Yes, in most fields. Many journals now explicitly allow preprint posting. However, some journals (especially older ones) consider preprint posting as prior publication and may reject manuscripts. Check the journal's policy before posting. Physics and mathematics journals expect preprints; journal publication is secondary. Biology and medicine are increasingly accepting preprints, but always verify the specific journal.
If I post a preprint and then revise it, should I delete the original?
No. Preprint servers preserve all versions (v1, v2, etc.), timestamped. Readers can see the evolution. Deleting versions would erase the record. Instead, post a new version (v2) with a note explaining changes. This shows transparency and allows readers to compare versions.
How do I cite a preprint?
Include the preprint server and identifier, and note 'preprint' status. Example: 'Smith, J., et al. (2023). Novel method for X. bioRxiv. https://doi.org/10.1101/2023.06.12.544567 (preprint; not peer-reviewed).' After peer-reviewed publication, update the citation to the journal version.
Are preprints citable in a formal publication?
Yes, but they should be clearly marked as preprints. For research contexts, citing a preprint is acceptable if you note its status and discuss limitations. For clinical guidelines or policy, do not cite preprints; use peer-reviewed evidence only.
What is the difference between a preprint and a peer-reviewed publication?
A preprint is the author's version posted to an open server; it has been screened for spam/copyright but NOT peer-reviewed. A peer-reviewed publication has been reviewed by 2–4 expert reviewers and edited. Peer review is the key difference: preprints are unvetted; peer-reviewed papers are vetted. Preprints can be good quality, but they lack the formal validation of peer review.
Sources
- Björk, B. C., Welling, P., Laakso, M., Majlender, P., Hedlund, T., & Guðnason, G. (2010). Open Access to the Scientific Journal Literature: Situation 2009. PLOS ONE, 5(6), e11273. DOI: 10.1371/journal.pone.0011273 ↗
- arXiv (2023). arXiv: e-Print Archive. Cornell University. link ↗
- bioRxiv (2023). The Preprint Server for Biology. Cold Spring Harbor Laboratory. link ↗
How to cite this page
ScholarGate. (2026, June 3). Preprint Servers and Pre-Publication Dissemination. ScholarGate. https://scholargate.app/en/publication-ethics/preprint-servers
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
- Data Sharing and Open SciencePublication Ethics↔ compare
- Open Access Publishing ModelsPublication Ethics↔ compare
- Peer Review ProcessPublication Ethics↔ compare