We recommend that you upload digital review copies optimized for the web rather than PDFs optimized for printing, as print-ready PDFs take a long time to upload and download.
We suggest that your files should be 40 MB or less, in order to go through our auto-import process and download and render well for readers. If you need our help or input to optimize your file down to a reasonable size, please refer to the instructions in this section, or email us at email@example.com with specific questions.
Note: in order for us to send a file to a Kindle, the file must be 24 MB or less.
PDFs can be optimized very easily for the web; please see our recommendations on optimization.