Grammarly Writing Assistant Cheat Sheet

Updated 2026-03-18

Grammarly is an AI-powered writing assistant that works as a browser extension, desktop app, and mobile keyboard to improve writing quality across emails, documents, and messages. It combines real-time grammar checking, tone detection, and generative AI capabilities to help users write with confidence and clarity in any context. Beyond basic proofreading, Grammarly offers advanced features like brand voice consistency, plagiarism detection, and full-sentence rewrites, making it essential for individuals, teams, and businesses looking to produce polished, professional communication wherever they write.

What This Cheat Sheet Covers

This topic spans 14 focused tables and 90 indexed concepts. Below is a complete table-by-table outline of this topic, spanning foundational concepts through advanced details.

Table 1: Core Correction FeaturesTable 2: Clarity and Style ImprovementsTable 3: Tone and Formality DetectionTable 4: Writing Goals and SettingsTable 5: Generative AI FeaturesTable 6: Browser and Platform IntegrationTable 7: Mobile Keyboard FeaturesTable 8: Document Editing FeaturesTable 9: Plagiarism and Citation ToolsTable 10: Performance and AnalyticsTable 11: Business and Team FeaturesTable 12: Vocabulary and Synonym FeaturesTable 13: Personal Dictionary and CustomizationTable 14: Visual Feedback and Color Coding

Table 1: Core Correction Features

Feature	Example	Description
Grammar checking	`I seen it yesterday` → `I saw it yesterday`	Detects and corrects grammatical errors including verb tense, subject-verb agreement, and incorrect word forms in real time.
Spelling correction	`recieve` → `receive`	Catches typos, misspelled words, and commonly confused words (their/there/they're) with context-aware suggestions.
Punctuation rules	`Lets eat grandma` → `Let's eat, grandma`	Fixes missing commas, periods, apostrophes, and misused punctuation marks to ensure proper sentence structure.
Comma splice detection	`I'm tired, I need sleep` → `I'm tired; I need sleep`	Identifies incorrectly joined independent clauses and suggests semicolons, conjunctions, or periods as fixes.
Run-on sentence correction	Two independent clauses with no separation	Detects sentences that improperly join multiple independent clauses and recommends splitting them or adding proper punctuation.

Table 1: Core Correction Features

Feature	Example	Description
Grammar checking	`I seen it yesterday` → `I saw it yesterday`	Detects and corrects grammatical errors including verb tense, subject-verb agreement, and incorrect word forms in real time.
Spelling correction	`recieve` → `receive`	Catches typos, misspelled words, and commonly confused words (their/there/they're) with context-aware suggestions.
Punctuation rules	`Lets eat grandma` → `Let's eat, grandma`	Fixes missing commas, periods, apostrophes, and misused punctuation marks to ensure proper sentence structure.
Comma splice detection	`I'm tired, I need sleep` → `I'm tired; I need sleep`	Identifies incorrectly joined independent clauses and suggests semicolons, conjunctions, or periods as fixes.
Run-on sentence correction	Two independent clauses with no separation	Detects sentences that improperly join multiple independent clauses and recommends splitting them or adding proper punctuation.