Introduction
The Similarweb API delivers digital intelligence at scale, powering smarter business decisions for the world's most innovative companies. Whether you're building competitive dashboards, AI applications and agents, enriching CRM data, or conducting market research, our API provides the foundational data you need to outperform your competition.
This documentation is for the latest version of our API (V5) and is currently in beta. Check out what's new in V5.
You can access V4 documentation here
Available Data
Similarweb API provides access to an unmatched breadth of digital intelligence metrics, including:
100M+ websites
Website traffic data, engagement metrics, audience and demographic insights
4M+ Apps
Mobile app performance, download estimates, app rankings, user engagement
5B+ Keywords
Keyword research, SERP analysis, SEO competitive data, rankings, and more
30M+ Companies
Company data, technographics, and lead enrichment
Global Coverage
We cover 190+ countries and territories with comprehensive digital intelligence data, including US state-level data for enhanced local market analysis.
Historical Data
Access up to 7 years of historical data for trend analysis and long-term strategic research across all data types.
Flexible API Architecture
Similarweb API provides both real-time and bulk data access to match your specific use case:
- REST API: Perfect for real-time dashboards, applications, and on-demand queries
- Batch API: Ideal for large-scale analysis, data warehouses, and historical research
Ready to Get Started?
On this page
- Introduction