[Steven Lyle Jordan]

Originally Posted by jridley

Is this work that does not have to be done for normal print? Is it work that has to be done separately for each ebook format?

Unfortunately, any conversion from one format to another needs proofing done to it, although not necessarily at the same level for each step. Content proofing should be done and completed before format-conversion, always. Format or layout proofing can be a lot less strenuous than content proofing, but some formats can even alter content as well as layout (depending on the conversion method, the original format and the software used).