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Text & Data

String & Readability Analyzer

Calculate comprehensive text statistics, Flesch reading ease, grade levels, reading & speaking duration estimates, and keyword density in real-time.

Quick Answer & Summary

The String & Readability Analyzer is a fast, accurate Text & Data utility designed to calculate comprehensive text statistics, flesch reading ease, grade levels, reading & speaking duration estimates, and keyword density in real-time. entirely in your browser with zero server data storage.

Total Words
67
Characters
509
No Spaces
442
Sentences
4
Paragraphs
2
Unique Words
59
Readability Scores
Very Difficult (Graduate / Professional level)
Flesch Reading Ease
0-100 scale (higher is easier)
19.4
Flesch-Kincaid Grade Level
College Undergraduate
Grade 14.7
Automated Readability Index (ARI)
US school grade level approximation
18
Coleman-Liau Index
Based on characters per 100 words
20.2
Reading Time & Density
Silent Reading Time
21s
@ 200 words / min
Speaking / Speech Time
31s
@ 130 words / min
Avg Word Length
6.4 characters
Avg Sentence Length
16.8 words
Top Keywords (excluding stop words)
without(2× · 3%)content(2× · 3%)modern(1× · 1.5%)web(1× · 1.5%)development(1× · 1.5%)requires(1× · 1.5%)fast(1× · 1.5%)dependable(1× · 1.5%)privacy-first(1× · 1.5%)utilities(1× · 1.5%)

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Toolbox Editorial TeamVerified Authors

Systems & Security Engineers • Applied Cryptography & High-Performance Web Tools

Updated:
100% In-BrowserZero server storage
Standards AuditedRFC & ISO compliant
Peer ReviewedEditorial Policy
Documentation & Guide

How to Use String & Readability Analyzer

1

Type or paste your text

Insert any document, blog draft, essay, or copy into the editor above.

2

Review instant readability metrics

Check your Flesch Reading Ease score, grade level difficulty, and estimated speech/reading times.

3

Optimize keyword density

Check the top extracted keywords and their frequency percentages to optimize for SEO or avoid keyword stuffing.

Pro Tips
Aim for a Flesch Reading Ease score of 60-70 for general public web copy and documentation.
Shortening sentences and reducing multi-syllable jargon significantly improves grade-level scores.

Frequently Asked Questions (PAA)

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Authoritative Standards & Citations

Calculations and algorithms on this page are implemented and verified in strict accordance with the following official technical specifications:

IETF (Internet Engineering Task Force)

RFC 7519: JSON Web Token (JWT)

Standardized compact, URL-safe means of representing claims to be transferred between two parties.

W3C Recommendation

Web Cryptography API Specification

Standard JavaScript API for performing basic cryptographic operations in web applications.

IETF Standards Track

RFC 4122: A Universally Unique IDentifier (UUID) URN Namespace

Definition of uniform format and generation algorithms for UUIDs.