# Klazify

> Website Classification API. Classify any URL into 620+ IAB categories, as JSON.

Klazify is a web intelligence platform that classifies websites using the IAB Content Taxonomy v3, provides company data, technology stack detection, traffic analytics, and similar domain discovery.

## API

Klazify offers a RESTful API with 10 endpoints. All endpoints accept POST requests with JSON body containing a `url` field. Authentication via Bearer token.

Base URL: https://www.klazify.com/api

### Endpoints

- [Categorization API](https://klazify.com/api-docs#categorization): Classify any URL into 620+ IAB v3 categories with confidence scores
- [Real-Time Classification](https://klazify.com/api-docs#real-time): Fresh AI-powered classification on demand
- [IAB Categories API](https://klazify.com/api-docs#iab): Get IAB Content Taxonomy v3 mappings
- [Company Data API](https://klazify.com/api-docs#company): Company name, HQ, employees, revenue, tags
- [Tech Stack API](https://klazify.com/api-docs#tech): Detect 150+ technologies used by a website
- [Logo API](https://klazify.com/api-docs#logo): Get company logos as hosted URLs
- [Domain Expiration API](https://klazify.com/api-docs#expiration): Domain age, registration, expiration dates
- [Social Media API](https://klazify.com/api-docs#social): Extract social media links from any domain
- [Similar Domains API](https://klazify.com/api-docs#similar): Find competitors and related websites
- [Traffic Intelligence API](https://klazify.com/api-docs#traffic): Global rank, monthly visits, traffic sources

### Landing pages

- [Discovery API](https://www.klazify.com/pages/discovery-api): Search the classified index by category, country, technology, and company size. Up to 100 domains per page.
- [Website Categorization API](https://www.klazify.com/pages/website-categorization-api): Classify any URL or email into 620+ IAB categories. The same response includes logo, company, tech stack, and social links.
- [Real-Time Classification API](https://www.klazify.com/pages/real-time-categorization-api): Return the stored classification, or pass refresh=true to crawl and classify the URL live.
- [IAB Categories API](https://www.klazify.com/pages/IAB-api): Map any domain to the IAB Content Taxonomy (v1 and v3) for contextual targeting and brand safety.
- [Company API](https://www.klazify.com/pages/company-api): Company name, industry, employees, revenue range, and headquarters from any URL or email.
- [Tech Stack API](https://www.klazify.com/pages/tech-api): Detect CMS, analytics, CDN, frameworks, and 150+ technologies on any website.
- [Logo API](https://www.klazify.com/pages/logo-api): Company logo as a hosted image URL from any domain.
- [Domain Expiration API](https://www.klazify.com/pages/domain-expiration-api): Domain age, creation date, expiration date, and days remaining.
- [Social Media API](https://www.klazify.com/pages/social-media-links-api): Facebook, X, Instagram, LinkedIn, YouTube, GitHub, Pinterest, and Medium URLs linked from a domain.
- [Similar Domains API](https://www.klazify.com/pages/competitors-api): Up to 10 competitors and related websites that share a domain's category.
- [Traffic Intelligence API](https://www.klazify.com/pages/traffic-intelligence-api): Global rank, monthly visits, traffic sources, and top countries. Available from the Advanced plan up.
- [Category List API](https://www.klazify.com/pages/category-list-api): The full taxonomy. v1 has 620 categories. v2 has 1,091. No URL required.

## Web Platform

- [Homepage](https://klazify.com/): Website Classification API
- [Categories](https://klazify.com/categories): Browse IAB v3 taxonomy
- [Technologies](https://klazify.com/technologies): Explore websites by technology
- [Companies](https://klazify.com/companies): Discover companies by country, industry, size
- [Blog](https://klazify.com/blog): Articles on web classification, company intelligence, traffic analytics, API guides, and data enrichment
- [API Documentation](https://klazify.com/api-docs): Full API reference with code examples
- [Pricing](https://klazify.com/subscription-plans): Plans from $39.99/mo

## Data

- Classification: IAB Content Taxonomy v3 (620+ categories)
- Coverage: The entire web, classified in real-time
- Company data: Name, city, state, country, employee range, revenue, tags
- Tech detection: 150+ technologies (CMS, analytics, CDN, frameworks)
- Traffic: Global rank, country rank, monthly visits, engagement metrics
- Social: Facebook, Twitter, LinkedIn, Instagram, YouTube, GitHub

## Blog

The Klazify Blog covers website classification, IAB taxonomy, company data enrichment, technology detection, traffic analytics, API integration guides, and use cases for ad-tech, cybersecurity, and data platforms. Search at https://klazify.com/blog?q=TOPIC

## Optional

- [llms-full.txt](https://klazify.com/llms-full.txt): Detailed API schemas and response formats