https://adspecsheet.com/blog/Ad spec checklists and spec changes, sourced from official docs.enhttps://adspecsheet.com/blog/performance-max-asset-checklist/https://adspecsheet.com/blog/performance-max-asset-checklist/Wed, 21 Oct 2026 09:00:00 +0800A pre-launch Performance Max checklist: headline and description limits, image sizes, logos and video formats, straight from Google Ads Help.