License verification API for validating license keys, enforcing activation limits, and preventing key sharing for software, SaaS, plugins, and desktop apps.

A comprehensive identity verification suite providing high-performance tools for document validation and data extraction. MRZ Parser: Fully compliant with ICAO standards (TD1, TD2, TD3, MRVA, MRVB) to extract identity info, document types, and all data from Machine Readable Zones. Document Number Validation: Checksum and format verification for Polish ID cards, Passports, Driving Licenses, and more (9-character alphanumeric support). Polish Identity Validators: Dedicated endpoints for local identifiers: PESEL: National ID number validation. NIP: Tax Identification Number (handles formatted and raw input). REGON: Business registry numbers (supports both 9 and 14-digit formats).

This API provides access to geocoded information, address validation and location details, ensuring accurate and up-to-date data for applications.

The Domain Name Checker API quickly verifies domain name availability, simplifying online presence management and ensuring secure acquisition of desired virtual addresses.

Accurately verify emails by evaluating format, domain, MX, SPF, DMARC, blacklists, reliability, and detecting disposable, suspicious, or role-based emails.

The DNS Check API enables users to examine Domain Name System (DNS) records for any domain.

The API verifies URLs, indicating whether they are broken or active, displaying HTTP status codes, errors, and link reliability in real time.

Language Matching API assesses and quantifies likeness between text, leveraging advanced NLP for accurate semantic understanding. Versatile and adaptable for diverse applications.

Analyzes a domain and returns detailed WHOIS information, availability, registration dates, validity, extension, and registrar data.

The Language Text Detector API accurately identifies text languages, which helps with multilingual customer support, content filtering, sentiment analysis and more.

The Gender Checker API employs facial analysis to accurately identify and categorize gender, offering a versatile solution for diverse applications.

This endpoint takes the information (string) as input, and provides the JWT-encoded result (string) as output. The output also includes a copy of the input, and a « status » value. Status is « Ok » or « Error: … ».

Simplify your licensing process with our Cloud License Management API for efficient license verification and activation.

Optimize software ownership with our Software Licensing Solutions API for reliable license verification and activation.

Safeguard digital products with our Digital Product Security API for robust license verification and activation.

The Domain Availability Check API efficiently checks the availability of desired domain names instantly, simplifying registration for prompt and informed decisions.

Protect your revenue with our Key Sharing Prevention API, ensuring secure license verification and activation processes.

Validate license keys quickly with our License Key Validation API for enhanced software security and user control.

Streamline your software's security with our License Key Management API for seamless verification and activation.

Check the availability of multiple domains in a single request with a quick, clear, and structured response for bulk or automated processes.

Enhance email accuracy with tools for domain validation, disposability checks, and suspicious address detection, ideal for user authentication and marketing campaigns.

The Domain Status Checker API checks domain availability with support for all TLDs, single, multiple and “Beast mode” query options for popular names.

Universal JSON Fix repairs broken or malformed JSON, especially from LLMs like ChatGPT, Claude, Deepseek, Gemini, or Llama. This API ensures reliable parsing by fixing mixed quotes, missing commas, and formatting issues, making it ideal for AI applications.

Validate structured data markup on any web page including JSON-LD, Microdata, and RDFa. Detects Schema.org types, checks for errors, and returns detailed validation results.

Run automated WCAG accessibility audits on any web page. Detects violations, warnings, and best practices for ADA and EAA compliance.

Get a comprehensive trust and quality report for any website. Analyzes DNS health, SSL certificates, security headers, content quality, performance indicators, and overall trust score.

Powerful and reliable API service that provides real-time domain registration data for businesses, cybersecurity professionals, and developers. Our API delivers accurate and up-to-date WHOIS information in a simple, easy-to-parse JSON format, allowing you to monitor domain ownership, prevent fraud, and enhance your applications with valuable insights.

Handle various documents smoothly with our Multi Document Type Check for MRZ and document numbers.

Verify Polish identities seamlessly with our dedicated Polish Identity Information Check for MRZ and document numbers.

Ensure high-quality leads with the Quick Email Verification API, your fast, reliable solution.

EU-Compliance: Digital Product Passport (DPP) Immutable QR Engine. Guaranteed 10-year URL persistence for Textile and Battery ESPR mandates (March 2026). High-error-correction QR generation optimized for industrial label printing. Frankfurt (EU-Central) data residency.

The Language Checker API identifies the language of a text quickly and accurately, facilitating content customization and translation.

Be able to determine the age of a given domain with ease. This API will give you information about how old the domain is.

Validates syntax, deliverability, domains, SMTP, MX, and detects whether the email is fake, disposable, or corporate.

Unleash the power of precision with the DNS Checker API. Seamlessly uncover the digital footprint of any domain by retrieving a comprehensive list of DNS records. From A to MX, empower your applications to navigate the virtual landscape effortlessly, ensuring seamless connectivity and heightened network awareness.

Ensure your links are active with our URL Status Validator API for seamless browsing.

Monitor and analyze website performance using the URL Health Check API for improved user engagement.

The Text Change Detector API is an tools for comparing two texts and highlighting their differences. It offers results in JSON format and pre-rendered for HTML and CLI.

Retrieve essential information from your emails securely with our Blacklist Email Check API, ensuring privacy and accuracy.

Streamline your processes using our Document Number Format Validation Check for accurate MRZ and document number formats.

Protect your inbox with the Email Data Checker API, ensuring secure and validated email exchanges.

Extract structured text, portrait, and signature from ID documents, such as driver’s licenses, passports, ID cards, permanent residence cards, etc. Multiple national ID documents are supported.

Confirm VPN connections effortlessly using the IP VPN Connection Validator API for peace of mind.

Ensure your website's reliability with our URL Status Check API, optimizing user experience effortlessly.

Guarantee compliance with international standards using our ICAO Standards Compliant Check for MRZ and document numbers.

The Multilingual Detector API is a tool that allows users to determine the language of a given piece of text with a confidence score.

Access comprehensive WHOIS domain data effortlessly with this API, perfect for developers and businesses needing domain insights.

Validate and verify email addresses securely to enhance user trust and reduce fraud with our Trusted Email Checker API.