IAB Taxonomies

The WebClassifAI API uses the Interactive Advertising Bureau (IAB) Content Taxonomies to classify web content. These taxonomies provide a standardized way to categorize content across different platforms and industries.

Available Taxonomies

• Content Taxonomy 1.0  - The original taxonomy
• Content Taxonomy 2.0  - Major update with new categories
• Content Taxonomy 2.1  - Minor updates and refinements
• Content Taxonomy 2.2  - Additional categories and improvements
• Content Taxonomy 3.0  - Significant restructuring and new categories
• Content Taxonomy 3.1  - Latest version with current categories

Taxonomy Structure

Each taxonomy version follows a hierarchical structure with varying levels of depth:

Tier 1 contains broad categories like “Technology & Computing”, while Tier 4 has narrow, specific categories like “Databases”.

• Version 1.0 has only 2 tiers
• All other versions (2.0, 2.1, 2.2, 3.0, 3.1) have 4 tiers

For every taxonomy prediction, results will always contain a Tier 1 category. Tiers 2, 3, and 4 may be missing depending on whether the content of the URL fits into more specific subcategories.

Additional Resources

• IAB Official Documentation 
• API Reference
• Code Examples