Free browser-based readability analyzer with 8 formulas, sentiment analysis, and SEO scoring.
- Flesch-Kincaid readability score
- Word, sentence, and paragraph count
- Reading time estimate
- Character count
- Average word and sentence length
- Grade-level recommendation
- 8 readability formulas (Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, ARI, Dale-Chall, Linsear Write, Spache)
- Consensus grade across all formulas
- Sentiment analysis
- Keyword extraction
- SEO scoring
- Text summarization
- Markdown export
- Analysis history
- File upload (.txt, .md, .docx)
- Dark and light mode
ProseScore runs entirely client-side. No data is sent to any server. Your text never leaves the browser.
Paste or upload text. Get instant analysis. Built on textlens. No account needed for free features.
- ProseScore vs Hemingway App — 8 formulas where Hemingway offers one
- ProseScore vs Grammarly — Free, private readability without the cloud
- ProseScore vs Readable.io — No signup, no subscription, same core formulas
- Pure HTML, CSS, and JavaScript
- textlens readability engine
- Hosted on Cloudflare Pages
- Stripe for payments