Free text readability analyzer and enhancement tool — Flesch-Kincaid, tone detection, SEO keyword analysis, and content comparison.
Enhio is a free text analysis tool that evaluates your writing across multiple dimensions. Get Flesch-Kincaid readability scores, word frequency analysis, sentence length distribution, tone detection, SEO keyword density analysis, and side-by-side content comparison — all processed client-side in your browser. Built for writers, editors, content marketers, and SEO practitioners.
- Flesch-Kincaid Grade Level and Reading Ease scores with instant feedback
- Word frequency analysis with stop word filtering
- Sentence length distribution chart for readability optimization
- Tone detection for formal vs. informal register
- SEO keyword density analyzer with ideal range guidance
- SEO readability scoring on a 0-100 scale
- Side-by-side content comparison for A/B copy testing
- Syllable count, average words per sentence, and complex word ratios
- 100% client-side — no data leaves your browser
- MIT licensed
- No signup, no tracking
- Pure HTML, CSS, and vanilla JavaScript
- No build step
- No external dependencies (except Google Fonts on some pages)
- Hosted on GitHub Pages with Cloudflare CDN
Enhio is part of Zovo Tools — free developer tools by a solo developer. No tracking, no signup, no nonsense.
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MIT licensed.
Built and maintained by Michael Lip. For questions or feedback: support@zovo.one