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 analyses
Batch processing for multiple pages
Integration with popular writing tools
Additional readability formulas

Download LexiCheck today and take the guesswork out of readability analysis!