Spec sheet · Google
Google AI ad specs (Nov 2026)
The limits Google documents for Google AI Overviews and AI Mode ads, with the source for each one. Type your copy in the checker below to see how it fits before you submit.
Limits
| Field | Limit |
|---|---|
| Headlines | 3 to 15 headlines[1] |
| Headline length | Up to 30 characters each[2] |
| Descriptions | 2 to 4 descriptions[1] |
| Description length | Up to 90 characters each[2] |
| Display path | path1 and path2 optional, up to 15 characters each; path2 requires path1[1] |
| Final URL | At least one final URL is required[1] |
| Double-width characters | Each double-width character (Korean, Japanese, Chinese) counts as 2[2] |
Check your copy
Counts use the limits above. The preview is a representative layout, not Google’s exact rendering.
AI Overview
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Representative layout only. Each channel decides how the ad is finally shown.
Questions
How long can a Google AI ad headline length be?
Up to 30 characters each. Source: Google Ads Help, checked 10 Nov 2026.
How long can a Google AI ad description length be?
Up to 90 characters each. Source: Google Ads Help, checked 10 Nov 2026.
How long can a Google AI ad display path be?
path1 and path2 optional, up to 15 characters each; path2 requires path1. Source: Google Ads API docs, checked 10 Nov 2026.
Sources
- Create responsive search ads - Google Ads APIGoogle Ads API docs · checked 10 Nov 2026
- About responsive search ads - Google Ads HelpGoogle Ads Help · checked 10 Nov 2026