Chrome Extension · 100% Private

Write clearly.
Get instant feedback.

Real-time readability scores for any text field. Hemingway-style writing analysis right where you type — Gmail, Twitter/X, Notion, and everywhere else.

Add to Chrome — Free

Free forever with 5 analyses/day. Pro unlocks everything for €4.99/mo.

Readability Scorer inline highlighting in action

Everything you need to write better

📊

7 Readability Formulas

Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, ARI, and Dale-Chall — all calculated instantly.

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Deep Writing Analysis

Spot passive voice, unnecessary adverbs, complex words (with simpler alternatives), clichés, hedge words, and sentence repetition.

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Inline Highlighting

See issues highlighted directly in your text as you type. Uses CSS Custom Highlight API with zero DOM modification.

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Writing Goals

Set a daily word count target and build a writing streak. Track your progress and lifetime words analyzed.

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Works Everywhere

Gmail, Twitter/X, Notion, Google Docs, Slack, LinkedIn, WordPress — any textarea or contenteditable field.

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100% Private

All analysis runs locally in your browser. No data is ever sent to any server. No analytics, no tracking, no network requests.

Readability Scorer working on Twitter/X

Simple pricing

Start free. Upgrade when you're ready.

Free

€0 forever
  • 5 analyses per day
  • Flesch Reading Ease score
  • Word count, sentences, reading time
  • Grade level indicator
  • Dark/light theme
Add to Chrome

Pro

€4.99 /month
  • Unlimited analyses
  • All 7 readability formulas
  • Passive voice & adverb detection
  • Complex words with alternatives
  • Clichés, hedge words, repetition
  • Sentence-level highlighting
  • Inline text highlighting
  • Writing goals & streak tracking
Get Pro
Readability Scorer settings and writing goals

Your text never leaves your browser.

Readability Scorer processes all analysis 100% client-side. We have no backend server. No text content is ever transmitted, stored, or shared. Period.