NetGalley accepts PDFs, ePubs and mobis.
Files can be uploaded directly or through the FTP.
FTP files should be uploaded into the _INBOX folder at ftp.netgalley.com using your FTP login and password (this is not linked to your login and password at www.netgalley.com). Make sure to read how to upload your FTP files (pay special attention to our naming conventions) to ensure your files import successfully.
NetGalley does have file size requirements, primarily related to making the file web-optimized so that readers can download the file quickly and will render well on most devices and tablets.