Authors use "editing" and "proofreading" interchangeably all the time. But in professional publishing, these are two completely different services — and confusing them can lead to some very expensive mistakes.
If you hire a proofreader when you need an editor, you'll end up with a grammatically clean book that is structurally broken. If you hire a developmental editor when you're at the final polish stage, you're spending money on changes the book doesn't need.
Here's exactly what each service involves.
What Is Editing?
Editing is about substance — the ideas, the structure, the arguments, the clarity of your writing. There are actually three distinct levels of editing, and each one addresses a different layer of the manuscript.
Developmental Editing (also called structural editing) addresses the big picture: Does the book's argument make sense? Are the chapters in the right order? Is there a logical flow from beginning to end? Does each chapter contribute to the book's central thesis? Developmental editing happens early, on the first or second draft, and can involve significant restructuring.
Line Editing looks at the sentence and paragraph level: Is this sentence clear? Is this paragraph saying what you think it's saying? Is the pacing right? Does this section drag? Line editing improves readability and flow without changing your argument or structure.
Copy Editing addresses grammar, punctuation, spelling, consistency, and adherence to a style guide (Chicago Manual, AP Style, etc.). It's the final layer of editing before proofreading.
What Is Proofreading?
Proofreading is the last step before publication. It happens after the book has been designed and laid out in its final format. A proofreader is looking for errors that slipped through all the previous editing rounds: typos, formatting inconsistencies, page numbering errors, widows and orphans (single lines left at the top or bottom of a page).
Proofreading does not fix structural problems. It does not improve your writing. It catches the final errors that exist in an otherwise finished document.
The Correct Sequence
| Stage | Service | What It Addresses |
|---|---|---|
| 1 | Developmental Edit | Structure, argument, chapter order |
| 2 | Line Edit | Clarity, pacing, paragraph flow |
| 3 | Copy Edit | Grammar, spelling, punctuation |
| 4 | Formatting/Layout | Book design for print/digital |
| 5 | Proofreading | Final errors in formatted file |
Can You Skip Steps?
Technically yes — but at significant risk. Skipping developmental editing is the most dangerous shortcut. Many self-published authors go straight to copy editing or proofreading, resulting in a polished, error-free book with a broken structure. Those books look professional on the surface and fail completely at actually helping readers.
See the full breakdown in our guide on the 4 types of book editing and learn what each costs in our book editor cost guide. Ready for a professional editorial review? Contact our team today.