To replace or update content, simply upload your file as normal. The new file will overwrite the existing file, regardless of file type, and be available to approved readers very quickly. There is a very short “moment of conversion” that likely won’t be noticed unless someone presses Download during the exact moment the file is being processed. Members will be able to re-download the updated file from their Shelf.
You can always preview the new files (and we encourage you to do so!) using the Preview link.
Note: If you replace a file, NetGalley members who are approved and already reading that file using the NetGalley Reader will lose their "place" in the book. The next time they open the book it will open at the beginning of the new file.