PubMatic PA Debugger is a Chrome extension designed for debugging publisher sites that utilize both Prebid.js and Protected Audience auctions. This tool provides a comprehensive mapping of PA auctions to Google Publisher Tags (GPT) ad slots, facilitating better understanding of ad unit configurations, seller identification, bid details, and interest group insights.

In addition to its mapping capabilities, the extension offers a detailed timeline and efficiency analysis of auction events, helping users to optimize their advertising strategies. It is important to note that currently, only a limited amount of Chrome traffic has Protected Audience auctions enabled, which may affect the availability of certain features for users.