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Text Readability & Content MetricsFree REST API

Mathematical content analyzer computing Flesch Reading Ease, Grade Level, Gunning Fog, and reading durations.

Best for:Full-stack prototyping, developer tooling, production apps, and hackathons.
Direct Public REST Service
Official Documentation
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Interactive Web Tool Available

You can test and use this service interactively in your browser with our Text Readability & Content Metrics Analyzer tool.

Open Live Tool
Rate Limit
Unlimited
Auth
Gateway (Zero-Setup)
Security & CORS
HTTPS • CORS Enabled
Payload Format
JSON / REST

FreeAPI Smart Gateway Supported (Recommended)

Zero account setup or API key registration needed. Call directly through FreeAPI Smart Edge Gateway with in-memory cache, automatic CORS support, and normalized JSON output.

Public REST

Live Test Console & 3D Assistant

Launch our 3D companion to execute real-time REST JSON queries against this endpoint with zero CORS friction.

Quickstart Code Snippets

Copy-paste ready boilerplate for your tech stack.

Bypass browser CORS restrictions. Protected by in-memory RAM cache and automated circuit breaker.
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// Call via FreeAPI Smart Edge Gateway (In-Memory Cache + CORS Guard)
// Endpoint: https://findfreeapi.com/api/v1/gateway/text-readability-content-metrics

async function callTextReadabilityContentMetrics() {
  try {
    const response = await fetch("https://findfreeapi.com/api/v1/gateway/text-readability-content-metrics", {
      headers: {
        "Accept": "application/json",
        // "x-freeapi-key": "fapi_live_your_api_key" // FreeAPI Gateway Key
      }
    });

    if (!response.ok) {
      throw new Error(`Gateway HTTP error! status: ${response.status}`);
    }

    const data = await response.json();
    console.log("FreeAPI Live Data:", data);
  } catch (error) {
    console.error("FreeAPI Gateway Error:", error);
  }
}

callTextReadabilityContentMetrics();
Running this API inside a bot, microservice, or backend daemon?

Share with Devs & GitHub Badge

Share this public endpoint with your team or embed verified status badge in your README.md.

GitHub README.md Badge (Live SVG):
[![Text Readability & Content Metrics - Free Public API](https://findfreeapi.com/api/badge/text-readability-content-metrics?style=flat)](https://findfreeapi.com/en/service/text-readability-content-metrics?utm_source=github_badge&utm_medium=readme&utm_campaign=readme_badge)

Key Advantages (Pros)

  • Zero-Auth: No API key or registration required to start querying.
  • Unlimited or generous quota suitable for high-throughput testing.
  • HTTPS & CORS Enabled: Can be queried directly from client browsers or server backends.

Considerations & Limits (Cons)

  • Third-party SLA: Service uptime depends on the upstream provider.

Frequently Asked Questions (FAQ)

Technical and integration answers for Text Readability & Content Metrics.

Yes, Text Readability & Content Metrics is listed as a free endpoint on FreeAPI Directory with an allowance of: Unlimited.

GitHub README Verified Badge

Embed this live verified badge in your project or repository.

Preview:Text Readability & Content Metrics FreeAPI Verified Badge
[![Text Readability & Content Metrics - Free Public API](https://findfreeapi.com/api/badge/text-readability-content-metrics?style=flat)](https://findfreeapi.com/en/service/text-readability-content-metrics?utm_source=github_badge&utm_medium=readme&utm_campaign=readme_badge)
Official Service Provider Ownership: Text Readability & Content Metrics

All data feeds, trademarks, and documentation belong directly to the original API provider. FreeAPI serves purely as a discovery index and documentation reference for developers.

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