Score the readability of any English text. Returns Flesch-Kincaid, Gunning Fog, SMOG, ARI scores, sentence-level breakdown, improvement suggestions, and target grade pass/fail in one call.

Tech Stack Detector API. Detect website technologies from HTML, scripts, meta tags, cookies, and response headers. Send a JSON POST request and receive a structured JSON response. Pricing, quotas, authentication, and subscriptions are handled by Zyla API Hub.

Descriptive statistics, normality, correlation, and process capability (Cp/Cpk/Pp/Ppk) as a JSON API. Send a data table and a config, get clean result tables back.

Edge case test data for QA and fuzz testing: Unicode, injection probes, boundary dates, float precision. 16 types, reproducible seeds, and every value explains what it breaks.

Access over 10,000 artificial intelligence tools and sites. Find relevant solutions for text, images, business, chatbots and more with intelligent search.

Quickly assess the efficiency of your site using the Retrieve Web Data Speed Test API for optimal performance insights.

Gain confidence with our Lender-Ready Financial Modelling API for seamless hybrid project financing.

Evaluate web performance by measuring server-client metrics, detect common issues, and generate detailed automatic optimization suggestions.

The Domain Verify Tools API is a comprehensive tool for verifying the availability of domains, MX records, A records, and WHOIS data, providing all the information in one place.

Canonical injection test strings for checking your own escaping: SQL tautology, XSS, path traversal, template injection. Harmless probes, not working exploits. Reproducible seeds.

QA test fixtures and CI seed data with reproducible seeds, so pinned test runs return identical rows every time. 16 field types, each value explaining what it breaks.

Fuzz testing input data for validation layers: malformed strings, boundary values, control characters. 16 field types, reproducible seeds; each value explains what it breaks.

Unicode test data for internationalization testing: combining marks, bidi overrides, ZWJ emoji, homoglyphs. Deterministic seeds, and every value explains what it breaks.

Integer and floating-point edge cases: int32/int64 limits, NaN, infinity, denormals, and IEEE 754 rounding. Deterministic seeds, and every value explains what it breaks.

Boundary value test data for off-by-one bugs: int32 and int64 limits, max-length strings, empty values. Deterministic seeds, and every value explains what it breaks.

Malformed and hostile string test data for input handling: control characters, null bytes, encoding edge cases. Reproducible seeds, and every value explains what it breaks.

Date and time edge cases: Feb 29, DST gaps, year 2038, leap seconds, and quarter-hour UTC offsets. Reproducible seeds, and every value explains what it breaks.

Streamline complex information using the Technical Writing Technical Writing Readability API for clear communication.

Boost student understanding with the EdTech Readability Improvement API designed for educational content.

Make your content accessible to all users with the Accessibility Compliance Accessibility Compliance Readability API.

Analyze and improve academic texts with the Academic Readability Analysis API for robust insights.

Enhance your content's clarity with the Content Marketing Content Marketing Readability API for better engagement.

Increase user engagement by enhancing readability with the User Engagement User Engagement Readability API.

Optimize your SEO strategy by improving readability with the SEO Optimization SEO Optimization Readability API.

Monitor internet speeds effortlessly with the Speed Test Data Retrieval API, ensuring optimal performance for users.