Text Analysis Tool

Comprehensive text analysis with readability scores, keyword density, and detailed metrics. Analyze word count, sentence structure, and content complexity in real-time.

Overview

This text analysis tool runs entirely in your browser, computing readability scores (Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog, SMOG, Coleman-Liau, and ARI), keyword density, type-token ratio, reading time estimates, and detailed character, word, sentence, and paragraph counts — all in real time as you type or paste. Because the analysis happens locally with no server round-trip, your drafts, client copy, medical notes, or any sensitive text stay on your device and are never uploaded anywhere. Drag and drop a .txt, .md, or .rtf file to get started immediately, and export the full results as JSON or your text as Markdown when you are done.

Key Features

  • Real-time text analysis as you type
  • Character, word, sentence, and paragraph counts
  • Multiple readability formulas (Flesch-Kincaid, Gunning Fog, SMOG, etc.)
  • Keyword density analysis with visualization
  • Reading time estimates
  • UTF-8 byte count and type-token ratio
  • Export to Markdown and JSON formats
  • Drag and drop file support (.txt, .md, .rtf)
  • Dark mode support and accessibility features

Common Use Cases

  • Content & SEO Writers — Check keyword density and Flesch Reading Ease to ensure copy hits the right grade level and avoids over-stuffing before publishing.
  • Academics & Students — Verify a paper or essay meets readability and complexity requirements without pasting text into an external service.
  • UX & Product Teams — Measure lexical diversity (type-token ratio) and sentence complexity in UI copy to keep microcopy clear and consistent.
  • Editors & Proofreaders — Get an instant Gunning Fog or SMOG score to flag overly complex passages and prioritise where to simplify.
  • Privacy-Conscious Professionals — Analyse legal, medical, or confidential documents without any risk of data leaving the browser — no upload, no account required.

How It Works
1

Enter Your Text

Type or paste your text into the editor, or drag and drop a text file. Analysis begins automatically as you type.

2

View Analysis Results

Get instant feedback on readability scores, word count, keyword density, and other text metrics in real-time.

3

Export Your Results

Download your analysis results as JSON or export your text as Markdown format for further use.

Frequently Asked Questions

What readability formulas are supported?
Our tool supports multiple readability formulas including Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index (ARI).

How is keyword density calculated?
Keyword density is calculated as the percentage of times a word or phrase appears in your text relative to the total word count. We show both individual word frequency and phrase density analysis.

What file formats can I upload?
You can upload plain text files (.txt), Markdown files (.md), and Rich Text Format files (.rtf). The tool will extract the text content for analysis.

Is my text data kept private?
Yes, all text analysis is performed entirely in your browser. Your text never leaves your device or gets uploaded to our servers, ensuring complete privacy.

What is the Type-Token Ratio?
The Type-Token Ratio (TTR) measures lexical diversity by comparing the number of unique words (types) to the total number of words (tokens). A higher ratio indicates more varied vocabulary.

How accurate are the reading time estimates?
Reading time uses average silent-reading speeds that vary by language (around 238 words per minute for English), and a separate speaking-time estimate at roughly 150 words per minute. Actual times depend on text complexity and individual reading speed.

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