Developmental vs line vs copy edit vs proofread

Start with a developmental edit (the story's structure), then a line edit (the prose), then a copy edit (correctness and consistency), and finish with a proofread of the typeset pages. Which one you need today depends on where your draft is, and buying them out of order is the most expensive mistake writers make with editing. Someone pays for a line edit, gets back a beautifully polished manuscript, and then hears from an agent that the structure doesn't work, so the polish went on scenes that are about to be deleted. That money is gone.

The four types aren't tiers of quality and they aren't a menu you pick from by budget. They're four different jobs that happen in a fixed order, because each one assumes the previous one is done. Here's the whole thing, as clearly as I can put it.

The short version

Edit	The question it answers	Works at the level of	When
Developmental	Is this the right story, told in the right order?	The whole book	After a complete draft
Line	Does every sentence do its job well?	The paragraph and sentence	After structure is locked
Copy	Is it correct and consistent?	The sentence and the word	After the prose is final
Proofread	Are there errors in the finished file?	The character and the page	After typesetting

The rule underneath the table: don't pay for a later stage until the earlier ones are settled, because later-stage work gets thrown away by earlier-stage changes.

1. The developmental edit (also called a structural, content or story edit)

What it does. A developmental edit reads the whole manuscript as a story and reports on whether it works: structure, pacing, character arc, point of view, stakes, plot logic, theme, where the book starts, where it sags, and what the ending actually delivers. The deliverable is usually an editorial letter (a few pages to dozens) plus margin notes keyed to specific scenes. Some editors, us included, also deliver video, because a lot of story feedback is easier to say than to write, and you get to hear where the reader got confused.

What it isn't. Proofreading with extra steps. A developmental editor won't fix your commas, and if they do they're wasting your money, because those sentences may not survive. It also isn't a rewrite. The editor diagnoses and you operate.

What it costs you in time. This is the one writers underestimate. A developmental edit usually triggers a full revision, and that tends to be months rather than weeks. Expect to cut scenes you like, move chapters, and possibly rewrite the opening. If you aren't prepared to do that, don't buy one yet.

Signs you need it:

• Beta readers say "I got bored in the middle" or "I didn't believe the ending," or, most common and least useful, "I liked it?" with no specifics.
• You've had form rejections on a full manuscript request.
• You know something's wrong and can't name it.
• You've rewritten the first three chapters six times. Endless opening rewrites often mean the problem is structural and you're sanding it from the wrong end.
• It's your first novel. Most first novels have a structural problem, because structure is the thing you can't see from inside.

2. The line edit

What it does. A line edit goes through the manuscript sentence by sentence and makes the prose do more work: rhythm, word choice, clarity, redundancy, voice consistency, on-the-nose dialogue, paragraphs that start in the wrong place, description that stalls, filter words ("she saw that the door was open" becomes "the door was open"), and places where you told us something you'd already shown.

It's a craft edit rather than a correctness edit. A line editor is making choices about art, and the good ones explain why, so you learn something and the next book needs less of it. Word choice is also a skill you can exercise away from the manuscript: a daily game from our free online word games, such as an anagram ladder or a mini crossword, is a low-pressure way to keep your vocabulary loose. Word choice is also a skill you can exercise away from the manuscript: a daily game from our free online word games, such as an anagram ladder or a mini crossword, is a low-pressure way to keep your vocabulary loose.

What it isn't. A copy edit. The two get conflated constantly, including by people selling them. A copy editor asks "is this correct?" and a line editor asks "is this good?" A sentence can be perfectly correct and still be flabby, unclear or in the wrong voice, and only one of these passes will tell you.

What it costs you in time. Usually weeks. You're accepting or rejecting a large number of small changes, and you should be rejecting some, because a line edit you accept wholesale has partly overwritten your voice.

Signs you need it:

• Readers finish the book and like the story, but nobody quotes anything.
• Your structure is settled and you're confident the scenes are staying.
• Agents request fulls and pass with "I didn't connect with the voice."
• You've heard "it feels a bit flat" or "it reads slow" about prose you know is correct.

3. The copy edit

What it does. A copy edit covers correctness and consistency: grammar, punctuation, spelling, usage, tense and agreement, plus the things people forget count as copyediting:

• A style sheet. The document recording every decision made about your book: hyphenation, capitalization, number style, spelling of invented terms, serial comma or not. It's a real deliverable and you should ask for it.
• Continuity. Eye color, timeline, ages, who was in the room, how long the journey took, the character whose name changes spelling in chapter nineteen.
• Fact checking, at least light: real places, real dates, real technology.
• Style conformity to a manual (Chicago is the usual choice for US trade fiction) and to your own preferences where they differ.

What it isn't. A line edit. A copy editor won't restructure your paragraph for rhythm; they'll make sure it's correct and consistent and leave your voice alone. A good copy editor working on deliberately ungrammatical prose will query rather than fix, because your fragments may be intentional.

What it costs you in time. Usually days to a couple of weeks, mostly spent reviewing tracked changes and answering queries. It's the least emotionally demanding pass, and plenty of writers find it oddly enjoyable.

Signs you need it:

• The prose is final and you aren't going to rewrite scenes.
• You're about to submit to agents or self-publish.
• You have a lot of invented terminology and no idea whether you've spelled it the same way throughout. (You haven't.)

4. The proofread

What it does. A proofread is the last look, on the final formatted file (the typeset pages or the ebook build, not the manuscript). It catches what survived copyediting and what the layout process introduced: bad line breaks, widows and orphans, a word dropped by a late fix, wrong running heads, a chapter starting on the wrong page, broken ebook links, a mangled apostrophe. To confirm that a late fix changed only what you meant it to change, a free in-browser diff checker will compare two versions of a text and show every difference.

What it isn't. A safety net for skipping a copy edit. A proofreader is looking for errors on a page that's supposed to be finished, not reading for consistency across 300 pages, so they won't notice that your protagonist's brother changed names. And it's no place to make changes, because every change at proof stage risks reflowing the page and creating new errors.

What it costs you in time. Usually days, and then you stop.

Sign you need it: the book is laid out and you're about to publish or send it to the printer. That's the only one.

The order, and why it can't be rearranged

Developmental  →  revise  →  Line  →  revise  →  Copy  →  typeset  →  Proofread

Each arrow is work you do. The order is fixed for an economic reason: a structural change destroys line editing, and a line change destroys copy editing. If you cut chapter eleven after a line edit, you paid for chapter eleven's line edit. If you rewrite a paragraph after a copy edit, that paragraph is now unedited and nobody will check it again.

It also explains something that confuses new writers: why a developmental edit can look like the priciest pass and still be the cheapest thing you do. It's the only pass that prevents waste.

How to figure out which one you need, in five minutes

Answer honestly, in order, and stop at the first "no."

1. Is the draft complete, beginning to end? No: you don't need an editor yet, you need to finish. (Notes on your first pages can teach you craft, but they won't tell you whether the book works.)
2. Can you say, in one sentence, what your protagonist wants and what's stopping them? No: developmental.
3. Have readers who owe you nothing finished it, and can they describe the story back to you accurately? No: developmental.
4. Are you certain no scenes are getting cut or moved? No: developmental, or revise more first.
5. Read a random page aloud. Is any of it boring you? Yes: line edit.
6. Is the prose final, and are you heading to submission or publication? Yes: copy edit.
7. Is it typeset? Yes: proofread.

If you're between two of them, the cheaper and more useful move is often a manuscript assessment, a read-and-report with no markup that tells you which edit you need before you commit to a full pass.

A note on titles

These terms aren't regulated, and editors, publishers and countries use them differently. "Substantive edit" might mean developmental or it might mean line. A "copy edit" sometimes includes light line work, and British and American usage diverge. So ask for the deliverable, not the label: how many pages of notes, on what, in what form, and can I see a sample of your notes on someone else's work?

We publish an example of a paid edit for exactly this reason, and every free edit we've done is archived on Twitch and the blog, so you can watch the whole thing and decide whether you'd want those notes on your book.

What we do

We do developmental edits and line edits for novels, screenplays, games and other forms, with video plus written notes. The Get Edits page has the current options and rates, and there's a breakdown of what drives editing cost if you're budgeting.