The Strong Password Evaluator API evaluates password security by analyzing complexity and assessing potential vulnerabilities, thereby improving overall security measures.

Retrieve the percentage of similarity between two text strings. Ready to use and easy to implement.

The Text Summarizing API is designed to automatically produce concise summaries of long texts. Using advanced natural language processing methods, it identifies and extracts key information from long content, aiding comprehension and analysis.

"Empower your applications with our Expression Recognition API uncover emotions, assess opinions, and analyze attitudes for enhanced decision-making and user engagement."

The Expression Evaluation API is a versatile natural language calculator that can evaluate mathematical expressions and return the results in plain text. Simply input the expression to be evaluated, and the API will scan and compute the calculation, making it an easy-to-use tool for developers who want to incorporate a calculator function into their applications.

Get and test the best discount calculator for your e-commerce.

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.

A globally usable mortgage and loan calculator supporting multiple currencies. Covers monthly repayments, full amortisation schedules, affordability reverse-calculation, early repayment savings, side-by-side comparison, total cost of ownership, APR, debt-to-income ratio, stamp duty estimates, refinance break-even, balloon payments, interest-only periods, loan consolidation, and biweekly payment options. Pure maths — no external data sources. Pass any currency code (USD, GBP, EUR, ZAR, AUD, etc.) for localised display.

The Romantic Probability API enriches user engagement across apps, websites, and social media platforms by providing captivating compatibility insights.

The Domain SEO Evaluation API is a powerful tool that allows developers and SEO professionals to gain valuable insights into the SEO performance of a given domain. By leveraging this API, users can access a wide range of SEO metrics and data points that can inform and optimize their digital marketing strategies.

The SEO Score Tracker API offers users real-time insights into a website domain's trustworthiness and authority.

The Text Keyword Evaluator API evaluates keyword occurrence within text, delivering valuable insights to refine content and improve search engine visibility.

The Keyword Evaluator API assesses keyword competitiveness, aiding SEO strategies by providing real-time insights for informed decision-making.

Fetch comprehensive evaluations of your email quality to enhance communication and boost performance.

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

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

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

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

Ensure your legal documents are crystal clear with the Legal Compliance Legal Compliance Readability API.

The SEO Metrics Analyzer API evaluates domain authority, backlinks, credibility, and categorization, offering crucial insights to enhance online optimization efforts.

Full on-page SEO audit with 0–100 score and letter grade

Evaluate website trustworthiness with our Analyze Website Authority Scores API for informed decisions.

Utilize the IP Risk Evaluation Fetch API to uncover vulnerabilities and protect your digital assets.

Leverage the Domain Authority Evaluation API to assess competitors and boost your online presence effectively.

Calculate a 0-100 Web Authority Score for any website based on real-time analysis of content coverage, freshness, structure, DNS health, SSL configuration, and technical quality indicators.