What Does an Editor Do? A Clear Breakdown by Editing Type

If you've been told to have your work edited before submitting it, or if you're considering hiring a professional editor for the first time, you may be wondering: what does an editor do, exactly? The answer depends on the type of editing your document needs and the stage of the writing process you're in. This guide explains what editors do at each level of editing, walks through what to expect when you work with one, and helps you identify which type of editing is right for your specific situation.

What Is a Professional Editor?

A professional editor is a qualified specialist who reviews and improves written documents before they're submitted, published, or shared with their intended audience. Professional editors work across a wide range of document types and industries, from academic dissertations and journal articles to fiction manuscripts, business reports, and website content.

What distinguishes a professional editor from a friend who's good at grammar is the combination of trained expertise, fresh perspective, and systematic approach they bring to your document. A professional editor reads your work as your intended reader will read it, identifying not just errors but everything that creates friction between your ideas and your reader's understanding of them. Generally, an editor hired by an individual improves the clarity and readability of the document, focusing on flow, grammar, word usage, spelling, punctuation, consistency, and style.

The Four Main Types of Editing at a Glance

Professional editing isn't a single service. It encompasses several distinct service levels, each addressing different aspects of a document at different stages of the writing process. The table below summarizes how they compare. For a complete guide to every editing level including the broader spectrum of six recognized levels, read our article on what editing is and why it matters.

What an Editor Does at Each Level

Understanding what an editor actually does at each level helps you choose the right service and set the right expectations. Each level addresses a different aspect of the document, and the level you need depends on where your document is in the writing process.

Developmental Editing

Developmental editing, sometimes called substantive editing, is the most comprehensive and intensive type of professional editing. A developmental editor addresses the big-picture elements of your manuscript: structure, organization, argument, pacing, character development (for fiction), and the overall clarity and effectiveness of the content.

What a developmental editor does:

• Reads the entire manuscript as a whole and assesses whether it achieves its purpose
• Identifies structural problems, such as chapters in the wrong order, underdeveloped arguments, or narrative arcs that don't resolve
• Assesses pacing and flow at the macro level, identifying sections that are too slow, too rushed, or that lose the reader's attention
• Evaluates character development, plot consistency, and logical coherence in fiction
• Assesses argument structure, evidence quality, and thematic coherence in non-fiction and academic writing
• Provides a detailed editorial letter or in-document comments explaining the issues identified and suggesting approaches for addressing them

What a developmental editor does not do: fix every grammatical error, proofread for typos, or produce a polished final draft. Developmental editing produces a road map for revision, not a finished manuscript. The author does the rewriting. This is why developmental editing comes first in the sequence: it makes no sense to polish sentences that may be restructured or removed in the revision that follows.

Who needs it: authors with a first or early draft that has structural issues, students whose dissertation chapters need significant reorganization, or anyone whose beta readers or supervisors have flagged problems with the overall shape of the work.

Line Editing

Line editing is sentence-level work on the quality of the prose itself. A line editor works through your manuscript line by line, improving how the writing reads: sharpening word choice, improving sentence rhythm, eliminating awkward phrasing, strengthening voice, and ensuring the tone and style are consistent throughout.

What a line editor does:

• Improves word choice and precision throughout the manuscript
• Rewrites or restructures sentences that are awkward, unclear, or stylistically weak
• Checks for active versus passive voice and adjusts where appropriate
• Identifies and reduces overused words, repetitive sentence structures, and verbal tics
• Ensures tone and register are consistent from the first page to the last
• Improves rhythm and flow at the sentence and paragraph level

What a line editor does not do: address structural problems (that's developmental editing) or correct every grammatical error systematically (that's copy editing). Line editing asks whether the writing is good. Copy editing asks whether it's correct.

Who needs it: authors whose structure is sound but whose prose could be sharper, more engaging, or more consistent in voice. Writers who've been told their writing is "technically correct but somehow flat" are often describing a line editing need.

Copy Editing

Copy editing is a thorough technical review of your document at the sentence and word level. A copy editor addresses grammar, spelling, punctuation, syntax, word usage, and internal consistency, correcting errors and ensuring the document follows the required style guide throughout. Copy editing is the type of editing most commonly hired by individuals preparing documents for professional, academic, or publication purposes. For a deeper comparison of copy editing and content editing, see our article on what copy editing is and how it differs from content editing.

What a copy editor does:

• Corrects grammar errors including subject-verb agreement, tense consistency, and sentence fragments
• Fixes spelling errors, typos, and incorrectly used words including homophones
• Corrects punctuation errors including missing or misplaced commas, apostrophes, and quotation marks
• Ensures internal consistency in terminology, capitalization, hyphenation, and abbreviations throughout the document
• Applies the required style guide, such as APA, Chicago, MLA, or a house style guide
• Checks that citations and references are formatted consistently and correctly
• Flags numerical inconsistencies, factual errors, and ambiguous passages for the author's attention

What a copy editor does not do: restructure content, rewrite for style, or catch every final typo (that's proofreading). Copy editing assumes the structure and content of the document are already settled.

Who needs it: most people hiring a professional editor for the first time need copy editing. If your document is structurally sound and well written but you want a thorough technical review before submission or publication, copy editing is the right service.

Proofreading

Proofreading is the final stage of the editing process, applied to a document that has already been edited at one or more earlier levels. A professional proofreader performs a surface-level check for any remaining errors that survived the editing process: typos, spelling mistakes, formatting inconsistencies, spacing errors, and minor punctuation issues.

What a proofreader does:

• Checks for any remaining typos, spelling errors, and accidentally repeated words
• Reviews punctuation for any final errors not caught in earlier editing stages
• Checks that formatting is consistent throughout, including headings, spacing, bullet point style, and font usage
• Verifies that page numbers, headers, and footers are correct
• Checks that any changes made during copy editing have not introduced new errors

What a proofreader does not do: rewrite sentences, address structural issues, or provide a comprehensive grammar review. Proofreading isn't a substitute for editing. It's the last quality check before a document that's already well-edited is published or submitted.

Who needs it: anyone who's already had their document edited and wants a final check before submission, publication, or distribution. Proofreading is also appropriate as a standalone service for writers who are confident in their language skills and simply want fresh eyes on a near-final draft.

Specialized Types of Editing

Beyond the four main editing levels, professional editors also specialize in specific document types and audiences. The most common specialized editing services include the following.

Academic editing

Academic editing is specialized editing for scholarly manuscripts including journal articles, research papers, dissertations, theses, and grant proposals. An academic editor understands the conventions, terminology, and rhetorical expectations of the relevant discipline, as well as the style guide required by the target journal or institution. Editor World's academic editing service, journal article editing, and dissertation editing services serve these document categories with editors who hold advanced degrees across the social sciences, the natural and physical sciences, medicine, engineering, computer science, and the humanities.

ESL editing

ESL editing is specialized editing for writers whose first language isn't English. An ESL editor addresses the systematic patterns of language error that non-native English writers produce, including article usage, preposition errors, unnatural phrasing, and sentence structures that are grammatically defensible but read awkwardly to a native English audience. ESL editing goes beyond standard copy editing to ensure the document reads as if written by a fluent native English speaker.

Business document editing

Business document editing addresses the specific conventions, tone requirements, and professional standards of corporate and organizational writing. A business editor understands the difference between a client proposal and an internal memo, between a board report and a marketing brief, and can ensure your document meets the expectations of its specific professional audience.

Book editing

Book editing encompasses all four main editing levels applied to fiction and non-fiction manuscripts. Professional book editors work with authors at every stage of the manuscript preparation process, from developmental feedback on early drafts through to final proofreading before publication. The level of editing required depends on where the manuscript is in the process and what it needs at that stage.

What an Editor Does With Your Specific Document

What your editor does in practice depends on the type of document you're having edited and the guidelines and standards it must meet.

Documents for work

If you're writing a document for your job, you need to know what your supervisor or intended audience expects. The format, tone, and style of a business document vary by context. A document presented to help decision-makers may benefit from bullet points and clear headers. A client-facing proposal may require a more formal register. A report submitted to a regulator may need to follow a specific house style. Providing your editor with this context, including the audience, purpose, and any style or format requirements, ensures the editing serves your actual needs.

Academic documents

For academic work, your editor needs to know the style guide required by your institution or target journal, whether that's APA, MLA, Chicago, or another system. Your editor reviews the document for flow, grammar, spelling, punctuation, and consistency, and can also make revisions that align with your instructor's or journal's specific requirements. Providing all relevant guidelines before editing begins is essential for getting the most out of the process.

Books and manuscripts

For authors, the type of editing required depends on where the manuscript is in the process. A first draft typically needs developmental editing before copy editing. A structurally sound manuscript that's been through multiple revisions may be ready for copy editing and proofreading. Getting the order of editing right matters because revision after copy editing can reintroduce errors that were already corrected.

How to Choose the Right Level of Editing

The most common question first-time clients ask is: which type of editing do I need? Here's a simple decision framework.

• My document has structural problems and needs significant reorganization. You need developmental editing.
• My structure is sound but the writing could be sharper, more engaging, or more consistent. You need line editing.
• The writing is good but I need a thorough technical review of grammar, punctuation, and consistency. You need copy editing.
• My document has already been edited and I just need a final check. You need proofreading.
• I'm submitting to an academic journal or institution. You need academic editing, which may include copy editing and proofreading tailored to your target journal's requirements.
• English isn't my first language. You need ESL editing, which addresses the specific language patterns that affect how your document reads to a native English audience.

If you're still unsure, many reputable editing services offer a free sample edit that allows you to see how an editor approaches your document before committing to the full service. At Editor World, you can contact editors directly and request a sample edit before purchasing.

How the Editing Process Works

When you hire a professional editor, here's what the process typically involves.

1. You submit your document with specific instructions. Tell your editor the purpose of the document, the intended audience, the style guide required, the turnaround time you need, and any specific areas of concern. The more context you provide, the better your editor can tailor their work to your needs.
2. Your editor reviews and edits the document. Most professional editors use Microsoft Word's Track Changes feature to mark every revision they make. This allows you to see exactly what was changed and why, and to accept or decline individual edits before finalizing the document.
3. Your editor may leave comments. In addition to tracked changes, editors often leave comments in the margin explaining a revision, flagging an area that needs your attention, or suggesting an alternative approach to a section that's unclear or could be improved.
4. You review the edited document. Once you receive your edited document, review the tracked changes carefully before accepting them. Don't accept all changes at once without reading them. Each revision is an opportunity to learn from your editor's expertise and understand your own writing tendencies.
5. You can follow up with questions. Most professional editors are open to communication after the editing is complete. If you have questions about a specific change or want to discuss a section of your document, a good editor will be happy to respond.

What to Tell Your Editor Before They Begin

The quality of the editing you receive is directly affected by how clearly you brief your editor before they begin. At minimum, provide the following.

• The purpose of the document and its intended audience
• The style guide or formatting guidelines required
• The tone and register appropriate for the document
• Any specific sections or issues you want the editor to pay particular attention to
• The deadline for the completed edit

Editor World: Writing, Editing, and Proofreading Services

Editor World offers professional writing services, rewriting services, paraphrasing services, and editing and proofreading services by experts. Our team of writers and editors includes only native English speakers from the USA, UK, and Canada. Editor World is BBB A+ accredited with 5.0/5 stars on Google Reviews and 5.0/5 on Facebook Reviews. More than 100 million words have been edited for over 8,000 clients in 65+ countries. Editors average 15 years of professional editing experience.

Whether you need developmental editing, line editing, copy editing, proofreading, academic editing, ESL editing, business document editing, or book editing, Editor World has an editor with the right expertise for your document. Browse editor profiles by subject expertise, credentials, and verified client ratings. Use the instant price calculator to see your exact cost in seconds. Same-day options of 2-hour, 4-hour, and 8-hour turnaround are available through our same-day editing service. Recommended by the Boston University Economics Department. A certificate of editing confirming human-only native English editing is available as an optional add-on for any manuscript.

Frequently Asked Questions

Content reviewed by Editor World editorial staff. Editor World, founded in 2010 by Patti Fisher, PhD, graduate of The Ohio State University, provides professional editing and proofreading services for academic researchers, students, business professionals, and authors worldwide. BBB A+ accredited since 2010 with 5.0/5 Google Reviews and 5.0/5 Facebook Reviews. More than 100 million words edited for over 8,000 clients in 65+ countries. Native English editors from the United States, the United Kingdom, and Canada with subject-matter expertise across the social sciences, the natural and physical sciences, medicine, engineering, computer science, and the humanities. 100% human editing, no AI at any stage. Recommended by the Boston University Economics Department.