Validate and score email addresses in real time — syntax, domain/MX, disposable, role-based and typo detection. Every check except SMTP, in a single fast call.

Validate and score email addresses in real time — syntax, domain/MX, disposable, role-based and typo detection. Every check except SMTP, in a single fast call.

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

The DNS Validation API verifies DNS records for any domain and record type, providing fast, accurate and globally updated results.

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.

Check up to fifty addresses per call, or extract every link of a page and validate each one: status code, redirect chain, response time and a working or broken summary. Smart checking with automatic fallback.

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.

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

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

Keyless Costa Rica Hacienda v4.4 comprobante validator: official XSD for 8 document types, the 50-digit clave numerica, CABYS code lists, totals/IVA math, XAdES-EPES signature check. Rule-coded JSON r

Keyless Bolivia SFV/SIAT factura electronica validator: official SIN XSD, code ranges, totals math, CUF/CUFD reconstruction with Modulo 11 and Base16, XML-DSig signature check. Rule-coded JSON report.

Keyless Malaysia MyInvois (LHDN) e-invoice validator: official UBL 2.1 XSD, code lists, totals math, XAdES signature check. POST XML or JSON, get a rule-coded JSON report. No LHDN account.

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

Validate tax identification numbers for 7 Latin American countries: CUIT (Argentina), RUT (Chile), RUC (Peru, Ecuador, Paraguay), NIT (Colombia), and CI (Uruguay). Check digit verification, formatting, and entity type detection.

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.

The SSL/TLS Certificate Verification API provides developers with a streamlined solution to validate and authenticate SSL/TLS certificates programmatically. It enables applications to verify the authenticity, expiration, and chain of trust of certificates, ensuring secure connections and compliance with encryption standards across web services and applications.

Get comprehensive SSL verification details with our user-friendly API, enhancing security checks for websites instantly.

Extract vital DNS verification data quickly and accurately with the DNS Verification Data Extractor API.

Checks multiple URLs and returns accessibility, redirects, SSL status, content type, response times, and errors if any.

JSON Clean API converts JSON documents into a readable format with line breaks and indentations. It supports entries up to 200,000 characters.

Extracts and validates JSON-LD, Microdata, RDFa, and structured markup from webpages or raw HTML for SEO and technical validation.

Checks translated JSON, localization strings, placeholders, ICU messages, missing keys, extra keys, empty values, untranslated values, and multi-locale consistency.

Checks product feeds for required fields, empty values, malformed URLs, duplicate IDs, price format, availability, condition, identifiers, descriptions, image links, score, grade, issues, and fix hints.