The difference between proofreading, copy editing, and developmental editing

If you’re researching publishing, you’ve probably seen the different types of editing being discussed. It can be hard to determine what kind of editing you need



1. Developmental Editing: Big Picture Focus

Also called: substantive editing or structural editing
Purpose: Strengthen the overall structure, content, and flow

Developmental editing happens early in the editing process. This is where your editor helps you shape your ideas, organize your content, and make sure your work makes sense to your target audience. It's less about grammar and more about what you're saying and how you’re saying it. This is the most expensive type of editing.

What it includes:

  • Identifying plot holes or gaps in logic

  • Clarifying your message or themes

  • Reorganizing chapters or sections for better flow

  • Improving pacing, tone, and voice

  • Giving feedback on character development (for fiction)

Best for: Authors working on a first draft or needing help developing their ideas and structure.

2. Copy Editing: Line-by-Line Polish

Also called: line editing (though some consider these slightly different)
Purpose: Improve clarity, consistency, and correctness at the sentence level

Copy editing is the next layer down. Your story or article is already solid in structure—but now it’s time to fine-tune your language. A copy editor will make sure your writing is clear, grammatically correct, and in line with your chosen style guide (like Chicago or AP). This type of editing is generally cheaper than developmental editing but more expensive than proofreading. It is also the type of editor that most authors tend to hire.

What it includes:

  • Grammar and punctuation corrections

  • Consistency in spelling, capitalization, and formatting

  • Sentence clarity and flow

  • Word choice and tone improvements

  • Fixing repetition or awkward phrasing

Best for: Writers with a complete draft who want their writing to shine before publication.

3. Proofreading: The Final Check

Also called: final pass or quality control
Purpose: Catch typos, formatting issues, and minor mistakes before publishing

Proofreading is the last step before your work is published or submitted. It’s a surface-level review that catches anything that slipped through the cracks. This is generally the cheapest form of editing. However, most, if not all, authors cannot just hire a proofreader and not a copy editor.

What it includes:

  • Typos and spelling errors

  • Punctuation mistakes

  • Formatting issues (headings, spacing, fonts)

  • Incorrect page numbers or captions

Best for: Final drafts that have already been edited but need one more careful look.

Why the Distinction Matters

Hiring the right kind of editor at the right time helps you:

  • Avoid wasting money on proofreading a draft that still needs developmental work

  • Receive the right kind of feedback to meet your goals

  • Produce the best possible version of your work

Think of it like building a house:

  • Developmental editing is the blueprint and framing

  • Copy editing is the finishing of the walls and installing fixtures

  • Proofreading is the final walk-through to make sure the doors close and the paint is perfect

In Summary

Type of Editing Focus Area When to Use It

Proofreading Typos, formatting Final draft before publication

Copyediting Grammar, clarity, style After structural revisions

Developmental Editing Structure, content, ideas Early drafts

Whether you're self-publishing a book, submitting an article, or preparing marketing materials, understanding these editing stages can help you choose the right professional (or process) at the right time.

Need help figuring out which type of editing your project needs? Reach out—I’d be happy to guide you! My email is awestediting@gmail.com or you can find me on Facebook at @Amanda West Editing.