Simple API for creating SVG QR codes with an optional error correction level.

Generate realistic, schema-aware synthetic test data for any database schema. 50+ field types, AI prompt-to-schema, pre-built templates, JSON/SQL/CSV output.

This API will help you tag different parts of any speech provided. Tags the provided text with parts of speech (such as nouns, verbs, adjectives, adverbs, etc.)

Validate Brazilian NF-e / NFC-e / CT-e XML against current SEFAZ schemas — get per-element typed errors, not a cryptic rejection code.

Validates email addresses by checking format, domain, and MX records, providing structured results and metadata for automatic integrations.

The Categorization Engine API streamlines content organization by intelligently generating relevant tags, enhancing discoverability, and saving time for creators.

The Website Metadata Parser API efficiently extracts the title, description and meta tags from the URL of a given website.

The Email Format Validation API enhances communication accuracy by verifying email addresses, checking format, domain existence, and detecting disposable or spam-related addresses.

Enhance your data generation with MockHero's Schema Aware Data Generation API, ensuring data integrity and relevance.

MockHero’s Mock Data API simplifies creating placeholder data, perfect for testing and development needs.

The Synthetic Data Synthetic Data MockHero API allows developers to generate diverse datasets while preserving privacy and compliance.

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.

Scrape any web page and get clean, structured content including title, body text, metadata, Open Graph tags, favicons, and more. Fast and reliable web scraping API powered by edge computing.

Web Content Scanner API analyzes a URL to extract key HTML tags such as titles, descriptions, keywords and headings, optimizing the SEO relevance of the page.

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.

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

Shield your platform from spam with the Validate Emails and Phone Numbers API.

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

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

Validate email addresses efficiently with features like format checks, disposable email detection, free provider identification, MX record validation, and deliverability scoring.

Validate email addresses by verifying their format, domain health, and disposability, ensuring reliability for registrations, marketing, and secure communications.

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.

Turn web pages into actionable content by extracting text or converting to markdown for easy integration and processing.

Render diagrams from text-based notation including Mermaid, PlantUML, and DOT syntax. Returns high-quality PNG or SVG images of flowcharts, sequence diagrams, class diagrams, and more.

Simplify web pages into markdown format quickly with the Web Pages to Markdown API.

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

Check your NF-e XML against current SEFAZ schemas and catch errors before submission.

Verify CT-e XML schema compliance quickly using our CT-e XML Schema Compliance API for hassle-free validations.

Ensure NFC-e accuracy with our Validation and Error Check API, streamlining your fiscal compliance effortlessly.

Catch schema errors in your fiscal documents with our Fiscal Document XML Validator API, ensuring straightforward compliance checks.

Validate and verify NF-e XML documents seamlessly with our reliable NF-e XML Validation Service API.

Detect and pinpoint errors in e-invoice XML with our E-invoice Error Checking API — returns the exact element paths that failed.

Streamline ERP fiscal integration with our ERP Fiscal Integration Validator API, ensuring your documents meet SEFAZ schema requirements.

Email Validation API ensures data accuracy by verifying email addresses in real-time, reducing bounce rates, enhancing security, and cutting costs.

Verifies numerical structures, identifies countries and line types, and ensures accuracy when analyzing international numbers such as French numbers.

Analyzes a web domain and returns SEO structure, content quality, use of headers, lists, schema, tables, and AI blocks.

The Domain SEO Score Checker API allows you to efficiently analyze key SEO elements, such as meta tags, headers and links, providing detailed reports.

The SEO Web Information API analyzes any website URL, generating a basic SEO audit report with actionable insights for improved visibility and performance.

Submit a URL and instantly learn if it’s indexable by Google, with detailed diagnostics for robots rules, meta tags, redirects, soft-404s, and more.

Validates phone numbers and email addresses, confirming correct formats, country codes, location, number type, and active MX records.

Investigates any webpage and generate a comprehensive SEO report.

Analyze domain and page authority metrics for SEO strategies using reliable data from the SEO Authority Metrics API.

Access worldwide domain data effortlessly with the SEO Structure Checker API for informed decisions.

Page Metadata Grabber API extracts key SEO tags like titles, headers, and keywords, helping users optimize their content and monitor webpage changes effectively.

Instantly validate how any URL will appear when shared on Facebook, LinkedIn, Twitter, and WhatsApp. Returns a full JSON report with platform-specific scores, broken tag detection, image dimension checks, and plain-English fix instructions — all in a single API call.

Upload an image and receive accurate labels describing the elements present, along with a probability score.

Validate email addresses. Check MX records, detect disposable and invalid emails.

The Webpages to Markdown API transforms web content into Markdown format, enabling developers to convert and manipulate HTML, CSS, and JavaScript effortlessly. This API offers precise control over the rendering process, allowing for performance optimizations, enhanced visual effects, and seamless dynamic content updates. With built-in tools for monitoring rendering efficiency and customizing behaviors, it is an invaluable resource for creating high-quality, responsive web applications that prioritize both aesthetics and functionality.