What a book editor actually does

There is a persistent idea that editing is proofreading with a bigger budget. It is worth taking apart, because authors who believe it tend to buy the wrong service, at the wrong stage, and then conclude that editing did not help.

Editing is really four different jobs that happen in a fixed order. Doing them out of order wastes money.

Assessment: deciding what the book needs

Before anything is changed, someone reads the whole manuscript and tells you the truth about it. Not line by line — as a book. Does the structure hold? Does the argument survive contact with chapter six? Is the first fifty pages actually the first fifty pages, or is it throat-clearing before the real opening?

This is the cheapest editorial work you can buy and the most consequential. An assessment on a 90,000-word manuscript costs a fraction of a full edit and frequently saves the author from paying for a copyedit on chapters that are about to be deleted.

Developmental editing: changing the book

Developmental editing is structural. It moves chapters, cuts subplots, identifies the three-chapter sag in the middle, notices that your best material is buried in an appendix.

For nonfiction, this is usually the difference between a manuscript that contains everything you know and a book somebody wants to read. Expertise arrives unordered. Someone has to decide what the reader needs first.

It is also the stage that requires the most from the author, because the output is not a corrected file. It is a revision plan, and you do the revising.

Copyediting: making the prose behave

Now the sentences. Grammar, syntax, register, consistency, repetition, the fact that your protagonist's brother is called Arun in chapter two and Arjun in chapter nine. A copyeditor builds a style sheet for your book — hyphenation, capitalisation, how numbers are set, which spellings you have chosen — and applies it across three hundred pages without drifting.

Good copyediting is invisible. You should not be able to point at the sentences that were changed.

Proofreading: the last read

Proofreading happens on typeset pages, not on the manuscript, and this distinction matters more than almost anything else in this article. A proofreader is looking for things that only exist once the book has been designed: a bad line break, a widow at the top of a page, a running head that says the wrong chapter, a caption that has drifted from its image, an entry in the contents that points to page 214 when the chapter starts on 216.

If someone offers to proofread your Word document, they are offering to copyedit it, and they should say so.

Why the order is not negotiable

Every stage assumes the one before it is finished. Copyediting a manuscript that is about to be restructured means paying to polish sentences that will be deleted. Proofreading before the interior is designed means catching none of the errors that proofreading exists to catch.

The most common expensive mistake we see is an author who has paid for a light copyedit, been told the book reads well, and gone to print with a structural problem nobody was asked to look for.

Ask what stage your manuscript is at. Buy that.