Types of Editors:
What They Do, When You Need Them, and Why It Matters
Understanding the editing process so you spend your time—and money—where it actually helps your book.
Editing is one of the most misunderstood stages of writing a book. Many writers know they “need an editor,” but aren’t sure what kind, when to hire one, or what they should realistically expect in return. The result is confusion, mismatched expectations, and sometimes paying for the wrong service at the wrong time.
Not all editors do the same job. Editing isn’t a single step—it’s a sequence, and each stage serves a different purpose. Big-picture story work comes first. Sentence-level clarity comes later. Final polish comes last.
This guide breaks down the main types of editors, what each one actually does, and how they fit into a sensible workflow—so you can make informed decisions about your manuscript and avoid costly missteps.
Why the Type of Edit Matters
A common mistake is trying to fix everything at once.
Polishing sentences won’t save a story with structural problems. And deep story notes are wasted if you’re already at the final stages. Editing works best when it follows the natural lifecycle of a manuscript.
Think of it like building a house:
- first you check the foundations and layout
- then you fix wiring and plumbing
- only then do you paint the walls and clean the windows
Each editor focuses on a different layer.
Editorial Assessment: The Big-Picture Diagnosis
An editorial assessment is a high-level evaluation of your manuscript.
What it is
A diagnostic overview of what’s working, what isn’t, and what needs attention next. This is not line-by-line editing.
What you get
Usually a detailed editorial letter or report covering:
- overall strengths and weaknesses
- plot, pacing, and structural issues
- character effectiveness
- clarity of theme and focus
- likely revision priorities
Best for
- early drafts
- writers who want a roadmap before major revisions
- deciding whether a manuscript is ready for deeper editing
An assessment gives you direction, not fixes. It helps you avoid rewriting blindly.
Developmental Editing: Shaping the Story
Developmental editing is hands-on work with the story itself.
What it is
In-depth guidance on:
- plot logic and structure
- pacing and scene purpose
- character development and arcs
- theme and narrative focus
- overall effectiveness of the story
What you get
This varies, but often includes:
- an annotated manuscript with comments throughout
- a detailed editorial letter
- sometimes chapter notes, scene summaries, or tracking documents
Best for
- complete drafts that need shaping
- stories that “almost work” but feel unfocused or uneven
- writers ready to make significant changes
This is the most intensive—and often the most transformative—stage of editing.
Copy Editing and Line Editing: Clarity, Consistency, and Voice
Once the story works, attention turns to the language.
Copy Editing (broadly)
Focuses on correctness and consistency:
- grammar, spelling, punctuation
- continuity (facts, timelines, names)
- unintended POV or tense slips
- repetition and clarity
- terminology consistency
Line Editing (more specific)
Zooms in on style and flow:
- sentence rhythm
- phrasing and word choice
- voice consistency
- readability and impact
In practice, many editors blend these, or use the terms differently. Always check what a service includes.
Common deliverable
A style sheet that records decisions about:
- spelling variants
- punctuation preferences
- formatting choices
- character and place names
- special terms
This keeps the book consistent through later stages.
Best for
- manuscripts where the story structure is solid
- preparing work for submission or publication
Proofreading: The Final Quality Control
Proofreading is the last pass, not a fix-everything stage.
What it is
A careful check for small errors after the manuscript is otherwise finished.
What it catches
- typos
- punctuation slips
- small consistency errors
- formatting or layout issues
Why it matters
Even professionally edited books still contain mistakes. Fresh eyes at the end catch what everyone else missed.
Proofreading should happen after copy editing and often after formatting.
Fact-Checking: Accuracy Where It Counts
Fact-checking is sometimes overlooked—and sometimes essential.
What it is
Verifying factual claims against external sources.
Important note – Editors may flag issues, but they are not always responsible for confirming every fact unless explicitly hired to do so.
Best for
- nonfiction
- historical fiction
- technically detailed or research-heavy fiction
If accuracy matters, fact-checking deserves its own attention.
A Practical Editing Order
Most manuscripts benefit from this general sequence:
Editorial assessment or developmental edit → copy/line edit → proofread
with fact-checking added where needed.
The principle is simple:
- fix the story first
- then fix the language
- then polish
Trying to reverse this order wastes time, money, and energy.
Choosing the Right Edit for Your Book
Ask yourself:
- Is the story fundamentally working?
- Do I need direction or execution?
- Am I revising structure—or refining language?
The “right” editor isn’t about prestige. It’s about fit—for your draft, your goals, and your stage in the process.
Core Takeaway
Editing isn’t one thing. It’s a progression.
Start with story shape. Move to clarity and consistency. Finish with polish. Verify facts when accuracy matters.
Understanding what each editor does—and when to use them—helps you get the most out of the editing process and gives your book the best chance to become what it’s meant to be.