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 /
Paste one line per headline or description. Each line is checked against verified limits. Double-width characters (Chinese, Japanese, Korean) count as 2, as Google counts them.
Limits from the spec pages on this site, last checked 2026-10-21.