Spec log
Rev 2026-10-21 / Performance Max: image, logo and video specs added from Google Ads Help / TikTok: Spark Ads captions show up to 4 lines / Google Display moving to Demand Gen from June 2026 / Meta Feed, Stories, Reels: still unverified / Every spec links to official docs / Rev 2026-10-21 / Performance Max: image, logo and video specs added from Google Ads Help / TikTok: Spark Ads captions show up to 4 lines / Google Display moving to Demand Gen from June 2026 / Meta Feed, Stories, Reels: still unverified / Every spec links to official docs /
Ad Spec SheetRev 2026-10-21Get an ad audit
Sheet 17Section BLOGRev 2026-10-21

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Checklists, spec changes and sizing guides. New posts twice a week. Every figure links to the platform's own docs.

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/ 6 min read / Google Ads, Performance Max

Performance Max asset checklist

A pre-launch Performance Max checklist: headline and description limits, image sizes, logos and video formats, straight from Google Ads Help.