How do I format my ARC for NetGalley?

NetGalley accepts PDFs, EPUBs, and MOBI files for upload to their digital catalog. Your title does not need to be a finalized copy. It’s advised to add an ARC page that typically says something like “This is an unproofed advance reading copy. It is not for resale and changes may be made between now and publication” or similar. I would recommend using an edited version that may or may not have been fully proofed.