← SEO News Search Engine Land · Jul 1, 2026

Google adds Channel Diagnostics to Performance Max

Google has introduced a new feature called Channel Diagnostics within Performance Max campaigns. This tool is designed to help advertisers pinpoint specific issues that might be hindering their campaign's effectiveness. It focuses on identifying missing or disapproved assets, which are crucial components for a PMax campaign to run optimally across Google's various channels.

For SEO professionals and marketers, this update is significant because it provides greater transparency and control over Performance Max campaigns. By quickly identifying and rectifying asset-related problems, they can ensure their PMax campaigns are fully optimized, potentially leading to improved ad performance, better reach, and more efficient ad spend. This diagnostic capability helps in maintaining campaign health and maximizing return on investment.

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Brief by Black & Gold SEO · original reporting by Search Engine Land. We summarize and link — full credit to the original publisher.