Which third party scripts are most excessive
A dataset and npm module quantifying the performance impact of third-party scripts across the web, categorized by entity.
What is Which third party scripts are most excessive?
Third Party Web is a data collection and analysis project that identifies and measures the performance impact of third-party scripts (like ads, analytics, social widgets) on website loading times. It processes data from HTTP Archive to attribute JavaScript execution time to specific companies and services, providing a ranked view of which third parties are most responsible for slow page loads.
Web developers, performance engineers, and site owners who need to understand and optimize the performance cost of external scripts on their websites.
It offers a unique, data-backed perspective on third-party performance at scale, helping developers choose faster alternatives and hold vendors accountable, unlike generic performance tools that only measure individual sites.
Overview
Data on third party entities and their impact on the web.
Use Cases
Best For
- Identifying which third-party scripts are slowing down a website
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