--- title: "Copy editing" description: "Editing a draft for clarity, consistency and correctness within an agreed scope." category: "Editorial craft" canonical: "https://contentlexicon.com/copy-editing" updated: "2026-10-11" --- # Copy editing _Editorial craft_ > Editing a draft for clarity, consistency and correctness within an agreed scope. Copy [editing](https://contentlexicon.com/editing) works sentence by sentence on a draft whose purpose and structure are already settled. A copy editor corrects [grammar](https://contentlexicon.com/grammar), spelling and [punctuation](https://contentlexicon.com/punctuation), applies house style, makes names, numbers and terms consistent throughout, checks references and links, and flags claims that look unsupported or risky. Its depth varies: a light edit may change little beyond style points, while a heavy one rewords sentences and queries whole passages. Agree which you're commissioning before the work begins, including whether fact checking and rewriting are in scope. The copy editor might be a freelance specialist, a member of a publications team or, in many organisations, a [content editor](https://contentlexicon.com/content-editor) or colleague doing it alongside other work. Much of the craft lies in the query: a note asking the [writer](https://contentlexicon.com/writer) to confirm a figure, resolve an ambiguity or choose between two readings, in place of an editor's silent guess. Copy editors often keep a style sheet as they go, recording decisions specific to the piece, such as how a name is spelled or whether a term takes a capital, so that the choice made on page four is still the choice on page forty. ## Why it matters for content Readers judge reliability from details. A figure that differs between the summary and the table, a programme called by three different names or a link to a retired page tells them something about the care behind the whole piece, even when the argument is sound. Copy editing is where those details get caught, and where small ambiguities that would trip a reader up (does “they” mean the trustees or the beneficiaries?) are settled with the writer instead of being left for the reader to guess. Consistency also matters beyond the single piece. When a service, condition or product is named and described the same way across a [website](https://contentlexicon.com/website), people searching for it find it, cross-references hold and AI agents drawing on the content are less likely to treat one thing as two. A [style guide](https://contentlexicon.com/style-guide) and [word list](https://contentlexicon.com/word-list) record the decisions; copy editing applies them and notices when a new case needs a decision nobody has made yet. It's often the practical moment, too, when link text, heading order, [alt text](https://contentlexicon.com/alt-text) and abbreviations get checked for [accessibility](https://contentlexicon.com/accessibility). ## How AI changes the picture Copy editing is the stage of editing that automation reaches most easily, because so much of it can be written down as rules. Prose [linters](https://contentlexicon.com/linting) such as Vale turn a style guide into checks that run as people write: a preferred term, a banned phrase, a capitalisation pattern. Language models extend this to judgements that are hard to express as rules, suggesting a clearer sentence or spotting that a paragraph contradicts an earlier one. Together they can take a large share of consistency checking off a person's desk and apply it across thousands of pages rather than one document. That changes where a copy editor's attention goes. Someone has to write and maintain the rules, decide which suggestions a tool may apply automatically and which it may only flag, and keep the style sheet in a form that people and tools can both use. Reviewing automated changes becomes a skill in its own right. A model asked to tidy a sentence may turn “may” into “will”, correct a deliberately unusual spelling, smooth a direct quotation or “fix” someone's name, and each change is easy to miss if it isn't tracked. Insisting that tools make visible, reviewable suggestions in place of silent edits keeps the habit of querying that makes copy editing trustworthy. AI-assisted drafts need a further check. Language models are known to produce references that don't exist and statistics that sound right without actually being true, so a copy edit of such a draft should confirm that cited sources exist and say what the text claims they say. That's slower work than tidying commas. ## Questions people ask **What should we give a copy editor before they start?** The style guide and word list, the intended audience, a note on the depth of edit you want and the name of whoever will answer queries. Say whether fact checking, link checking and accessibility checks are included. Most delays in copy editing come from queries waiting for answers. **Where does copy editing end and proofreading begin?** Copy editing improves the text; [proofreading](https://contentlexicon.com/proofreading) checks the final version, in its finished layout, for errors that remain or crept in along the way. On a website the two often collapse into one pass, which is workable for small updates. For a report or anything designed, keep a separate proofread of the laid-out version, ideally by someone who didn't do the copy edit. **Will a copy editor check our facts?** Usually only lightly: names, dates, links, sums and figures that can be compared with a source supplied alongside the draft. Full fact checking is a different job and needs commissioning as such. In most organisations, confirming that a claim is right remains the responsibility of the writer or a subject expert, with the copy editor's queries pointing to where it's needed. **Can a style checker replace a copy editor?** For rule-based consistency on routine content it can do much of the work. It can't tell whether a figure is right, whether “that” or “which” matches what the writer meant, or whether a grammatically correct sentence will mislead its reader. A sensible arrangement gives tools what can be specified and keeps people for meaning, accuracy and queries. ## Learn more - [Glossary of editorial and publishing terms](https://www.ciep.uk/resource/editorial-glossary.html) – CIEP’s definitions of copyediting, line editing and proofreading side by side, including how far a copy edit may extend depending on the state of the original. - [Confessions of a Comma Queen](https://www.newyorker.com/magazine/2015/02/23/holy-writ) – Mary Norris's New Yorker essay on decades at the magazine's copy desk, a lively account of house style and of how many copy-editing decisions are interpretive rather than mechanical. Related terms: [Automated testing](https://contentlexicon.com/automated-testing), [Content editor](https://contentlexicon.com/content-editor), [Editing](https://contentlexicon.com/editing), [Grammar](https://contentlexicon.com/grammar), [Linting](https://contentlexicon.com/linting), [Proofreading](https://contentlexicon.com/proofreading), [Pull request](https://contentlexicon.com/pull-request), [Senior content editor](https://contentlexicon.com/senior-content-editor), [Style guide](https://contentlexicon.com/style-guide), [Word list](https://contentlexicon.com/word-list) Also called: Copyediting This page was last reviewed in October 2026.