A preprint is when a scientific manuscript is posted to a public server prior to journal acceptance and official publication. Preprints are useful ways to disseminate knowledge quickly, but they are not peer reviewed prior to posting online.
Preprint servers are open access online servers designed for authors to post their findings and receive feedback.
Before posting a preprint online, you must review the journal policies - some journals prohibit preprints. You should also consider copyright and licensing issues, since some publication agreements transfer copyright from the author to the publisher.
