Readability Score Checker

The Readability Score Checker analyzes any block of text and returns Flesch-Kincaid Grade Level, Flesch Reading Ease, average sentence length, syllable count, and word complexity metrics in a clean Bootstrap 5 dashboard card. It is built for SEO specialists, content writers, and developers who want to audit page copy directly inside their build workflow without third-party APIs or third-party accounts.

Configuration

Content

Card Title

Text to Analyze

Target Audience

Flesch Reading Ease Score

Flesch-Kincaid Grade Level

Word Count

Sentence Count

Avg. Words Per Sentence

Passive Voice (%)

Estimated Reading Time

Improvement Recommendations

Design

Accent Color

Card Theme

Score Badge Style

Card Border Radius (px)

Layout

Show Recommendations SectionShow Score Progress Bars

Metric Grid Columns

How to Use

1. Paste your content into the Text Input field and set your target audience grade level. 2. Choose a card theme, accent color, and border-radius to match your site's design system. 3. Preview the generated Bootstrap 5 readability dashboard card in real time. 4. Copy the HTML or download it and drop it straight into your project.

Why Use This Tool?

Most readability tools are locked behind logins or SaaS paywalls and return results in proprietary formats you cannot embed. This tool outputs production-ready Bootstrap 5 HTML you can paste directly into a CMS, admin panel, or content review page in seconds, with zero JavaScript dependencies and no third-party API calls required.

Frequently Asked Questions

What is the Readability Score Checker?

It is a free online tool that calculates key readability metrics for any text you paste in, then renders those results as a copyable, production-ready Bootstrap 5 HTML card you can embed anywhere.

Which readability formulas does this tool use, and what scores should I aim for?

The tool calculates Flesch Reading Ease (0 to 100, where 60-70 is ideal for general web content), Flesch-Kincaid Grade Level (target 6-8 for broad audiences), average words per sentence (aim for under 20), and a passive-voice percentage (keep below 10 percent for active, engaging copy). If you are writing for a technical audience like developers or medical professionals, a grade level of 10-12 and a lower Flesch score are acceptable. For landing pages and blog posts targeting general consumers, prioritize a Flesch Reading Ease above 60.

Is it free?

Yes — the Readability Score Checker is completely free with no signup required. Built by the CanvasBuilder.co team.