English Grammar Checker
Intelligent English grammar checking tool supporting American, British, Australian, and Canadian English dialects. Provides real-time grammar analysis and smart correction suggestions. Runs completely in browser to protect text privacy.
Key Features
Multi-dialect Support
Supports four mainstream English dialects, automatically adapting spelling and grammar rules for different regions:
- American English: Uses American spelling (e.g., color, organize) and punctuation rules
- British English: Uses British spelling (e.g., colour, organise) and punctuation rules
- Australian English: Australian English standards
- Canadian English: Canadian English standards (combines British and American features)
Comprehensive Grammar Checking
Detects various grammar and writing issues:
- Spelling Errors: Identifies spelling mistakes and typos
- Capitalization Errors: Checks sentence beginnings, proper nouns, and other capitalization rules
- Punctuation: Checks commas, periods, quotation marks, and other punctuation usage
- Repeated Words: Identifies consecutive duplicate words (like "the the")
- Grammar Errors: Detects subject-verb agreement, tense errors, etc.
- Writing Style: Provides more elegant expression suggestions
- Readability: Optimizes sentence structure to improve reading experience
- Word Choice: Recommends more accurate vocabulary
Smart Correction Suggestions
Each detected issue provides one or more correction solutions:
- Delete Suggestions: Remove unnecessary or incorrect content
- Replace Suggestions: Replace with correct words
- Insert Suggestions: Add missing content at appropriate positions
Click suggestions to automatically apply corrections with one click.
Visual Markup
Issues in text are highlighted with different colored underlines corresponding to different issue types:
- Red: Spelling errors
- Purple: Capitalization and formatting issues
- Yellow: Writing style suggestions
- Orange: Punctuation issues
- Teal: Repeated words, readability, and word choice
- Dark Purple: Other miscellaneous issues
Click any markup to view detailed explanations and correction suggestions.
Use Cases
Academic Writing
- Check grammar errors in papers and reports
- Improve English writing accuracy
- Ensure compliance with academic standards
- Improve expression professionalism
Business Communication
- Correct spelling and grammar errors in emails
- Optimize business document wording
- Enhance professional image
- Avoid misunderstandings and ambiguity
English Learning
- Real-time discovery and correction of grammar errors
- Learn correct expression methods
- Understand common error types
- Improve English writing ability
Content Creation
- Check language quality of blog articles
- Optimize marketing copy expression
- Ensure content readability
- Improve text professionalism
Daily Use
- Check social media posts
- Correct errors in instant messages
- Improve personal email quality
- Verify accuracy of important texts
How to Use
- Select your desired English dialect (defaults to American English)
- Enter or paste English content needing checking in text box
- Tool automatically analyzes and marks potential issues
- Click any markup to view detailed explanation
- Choose appropriate correction suggestions to apply changes
- Repeat checking until text is polished
Result Explanation
Perfect Text
If no issues found in text, displays green checkmark icon and confirmation message indicating your text is grammatically correct.
Issues Found
Tool displays corrected text in grammar analysis panel with all issues marked by colored underlines. Click markups to view:
- Issue type (e.g., spelling, punctuation, style)
- Specific issue description
- One or more correction suggestions
- Current issue's context in text
Important Notes
- Grammar checkers cannot understand all contexts; recommend manual review of important content
- Professional terms and brand names may be misjudged as spelling errors
- Deliberate usage in creative writing may be flagged
- Tool provides suggestions not absolute correct answers; judge based on actual situation
Privacy Protection
Runs completely in your browser; all text processing completes locally. Your text never uploads to servers, is never recorded or analyzed.
Tool Comparison
Compared to online services like Grammarly, this tool runs completely offline, protects privacy, requires no registration, and is completely free. Compared to Word's built-in checking, this tool focuses on English grammar, detects more accurately, and suggests more intelligently.
