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Grammarly

Writing assistantgrammarly.com

Grammarly for Technical Writing

Grammarly uses AI to detect grammar errors, flag weak phrasing, adjust tone, and enforce consistency — all in real time, inside the tools you already use. For technical writers, it functions as a final-stage quality gate that catches the issues that slip through when you're deep in content.

Use Grammarly as a polishing tool, not a drafting aid. Running it too early interrupts creative flow; it works best after you have a complete draft.

What it is

Grammarly is an AI writing assistant available as a browser extension, desktop app, Microsoft Word add-in, and Google Docs integration. It analyses text in real time and surfaces suggestions across four dimensions: correctness (spelling, grammar, punctuation), clarity (sentence structure, wordiness), engagement (word variety, readability), and delivery (tone, formality).

The free tier covers the essential correctness checks. Grammarly Premium adds the full clarity, engagement, and delivery analysis. Grammarly Business adds team-wide style guides, brand tone profiles, and usage analytics — the most useful tier for documentation teams.

Use cases for technical writers

1
Clarity and readability
Grammarly flags long, complex sentences and passive constructions that obscure meaning. In technical documentation, clear sentences reduce support requests — every word that confuses a reader is a potential ticket.
2
Terminology consistency
Technical writers often reuse the same concepts across dozens of pages. Grammarly Business lets you define a custom style guide — flag terms to avoid ("click on" → "click"), enforce preferred spellings, and warn when brand names are misused.
3
Tone calibration
The tone detector shows in real time whether your writing reads as confident, formal, friendly, or urgent. This is useful when adapting a developer guide into a user guide — the informational content stays, but the register shifts.
4
Final review pass
Before sending documentation for stakeholder review, running it through Grammarly catches the small errors that undermine credibility — inconsistent capitalisation of product names, doubled words, stray apostrophes.
5
Conciseness
Technical documentation tends toward verbosity. Grammarly's conciseness suggestions remove filler phrases like "it is important to note that", "in order to", and "the fact that" — phrases that add length without adding meaning.

Where it integrates

Browser extension
Checks text in any web-based editor — Notion, Confluence, Google Docs, CMS platforms.
Microsoft Word
Native add-in for Windows and macOS Word. Suggestions appear in a sidebar without leaving the app.
Google Docs
Grammarly for Google Docs overlays suggestions directly in the document editor.
macOS / Windows app
System-wide keyboard shortcut opens the Grammarly editor from any application.
VS Code extension
Checks comments and markdown files inside your code editor.
API (Enterprise)
Embed Grammarly writing assistance directly in your own documentation platform.

Best practices

Use after draftingLet your first draft flow without interruption, then run a Grammarly review pass. Editing while writing slows output and encourages over-polishing early content.
Build a team style guideOn Business plans, import your style guide into Grammarly's custom rules. This enforces consistency across every writer without manual policing.
Don't accept every suggestionGrammarly doesn't understand domain-specific terminology. Technical terms, product names, and intentional stylistic choices will trigger false positives — review each suggestion before accepting.
Combine with human reviewGrammarly catches surface-level issues. A human editor is still required for structure, accuracy, completeness, and audience-appropriateness.

Before / After examples

Clarity · Passive → Active
The configuration file should be edited by the user in order to set the correct values for the environment variables that are required for the application to be able to connect to the database successfully.
Issues detected
·Passive voice ("should be edited by")
·Redundant phrase ("in order to")
·Noun pile ("environment variables that are required")
·36 words → 19 words

Toggle between Before and After to compare the changes.

Plan comparison

FeatureFreeProBusiness
Grammar & spelling
Clarity suggestions
Tone detection
Plagiarism check
Custom style guide
Team analytics
Brand tone profiles

Pro tip

Set the audience knowledge level to "Expert" in the Grammarly editor when writing developer documentation. This prevents it from flagging intentional technical terms as jargon.