LexiCheck

Instantly analyze the reading difficulty of any webpage, article, or document with LexiCheck - a powerful browser extension that uses five industry-standard readability formulas to give you comprehensive text analysis.KEY FEATURES:📊 Multiple Readability Formulas Flesch Reading Ease (0-100 scale) Flesch-Kincaid Grade Level Gunning Fog Index SMOG Index Coleman-Liau Index 🎯 CEFR Level Mapping Automatically maps text to CEFR levels (A1-C2) to help language learners, educators, and content creators understand text complexity at a glance.📝 Comprehensive Text Metrics Word count, sentence count, syllable count Complex word percentage Average words per sentence Average syllables per word Detailed diagnostic information ✨ Flexible Analysis Options Analyze entire web pages Analyze selected text only Paste custom text for instant analysis Right-click context menu for quick checks Visual highlighting of difficult sentences and words 🎨 Smart Highlighting Visually identify challenging content with color-coded highlights: Difficult sentences (20+ words or high complexity) Complex words (3+ syllables) Clear visual feedback for content optimization 📚 Perfect For: Educators & Teachers: Assess reading materials for grade-level appropriateness Content Writers: Optimize articles for target audiences UX Writers: Ensure clarity in product copy and documentation ESL/Language Learners: Find content matching your proficiency level Accessibility Professionals: Improve content readability for diverse audiences Students: Evaluate source material complexity Publishers & Editors: Maintain consistent reading levels across content HOW IT WORKS: One-Click Analysis: Click the extension icon and choose "Analyze Page" to scan the current webpage Selection Mode: Highlight specific text and analyze just that portion Custom Text: Paste any text into the built-in editor for instant analysis Visual Feedback: Use the highlight feature to see difficult content marked directly on the page TECHNICAL DETAILS:LexiCheck uses proven readability formulas trusted by educators and publishers: Flesch Reading Ease: Scores text on a 0-100 scale (higher = easier to read) Flesch-Kincaid Grade: Indicates US school grade level required to understand text Gunning Fog Index: Estimates years of formal education needed SMOG Index: Particularly accurate for health/medical content Coleman-Liau: Uses character count for precise measurement All formulas include sophisticated syllable counting algorithms with 95%+ accuracy for common English words, special handling for abbreviations, proper nouns, and edge cases.CEFR LEVEL GUIDE: A1: Very simple text (≤ Grade 3) A2: Basic everyday text (Grades 4-5) B1: Moderate complexity (Grades 6-8) B2: Upper-intermediate (Grades 9-11) C1: Advanced academic (Grades 12-14) C2: Proficient/native level (Grade 15+) ADVANCED FEATURES:✅ Automatic detection of structured text (worksheets, tests, lists) ✅ Smart sentence segmentation with abbreviation protection ✅ Performance optimization for large documents ✅ Works on most websites (see limitations below) ✅ Clean, intuitive interface with no clutter ✅ Privacy-focused: all analysis happens locally in your browserKNOWN LIMITATIONS: Google Docs: Due to security restrictions, use "Analyze Selection" or copy-paste into Custom Text PDFs: Cannot extract text from embedded PDFs Canvas/image-based content: Only works with actual text Cross-origin iframes: Some content may be inaccessible due to browser security PRIVACY & SECURITY:Your privacy matters. LexiCheck: Processes all text locally in your browser Never sends your content to external servers Doesn't collect or store personal data Open to transparency about how it works USE CASES: For Writers: "I use LexiCheck to ensure my blog posts stay at a Grade 8 reading level for maximum accessibility. The visual highlighting helps me spot overly complex sentences instantly." For Teachers: "Perfect for finding age-appropriate articles for my students. I can quickly scan websites and see if they match my class's reading level." For Language Learners: "As a B1 English learner, this helps me find articles that challenge me without overwhelming me. The CEFR mapping is incredibly useful." For Content Teams: "Our style guide requires Grade 9 readability. LexiCheck helps our team maintain consistency across all our documentation." GETTING STARTED: Install the extension Navigate to any webpage Click the LexiCheck icon in your toolbar Choose your analysis method: "Analyze Page" for full page analysis "Analyze Selection" for highlighted text "Custom Text" to paste your own content View instant results with detailed metrics TIPS FOR BEST RESULTS: For most accurate results, analyze text samples of 100+ words Use "Analyze Selection" for specific sections The Custom Text feature works great for drafts and documents Highlighting works best on pages under 10,000 words for performance Right-click selected text for quick context menu analysis SUPPORT & FEEDBACK: We're committed to improving LexiCheck. If you encounter issues or have suggestions, please use the feedback options in the extension or leave a review. We read every comment and actively work on updates. FREQUENTLY ASKED QUESTIONS: Q: Is this accurate? A: LexiCheck uses industry-standard formulas with 95%+ syllable counting accuracy. Results are comparable to professional readability tools. Q: Does it work offline? A: Yes! All analysis happens in your browser. No internet connection needed after installation. Q: Can I analyze my own documents? A: Yes! Use the Custom Text feature to paste any content for instant analysis. Q: Why can't it read Google Docs? A: Google Docs uses security features that block extensions from accessing document content directly. Use "Analyze Selection" or copy-paste instead. Q: Is my data safe? A: Absolutely. Nothing leaves your browser. All processing is 100% local. WHAT'S NEXT: We're actively developing new features: Export detailed reports Save and compare …