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Google Ads Character Limits: RSA, Performance Max and Demand Gen

Every Google field in one table: responsive search ads, Performance Max, Demand Gen, responsive display, sitelinks, callouts and YouTube video action ads. Type a headline or description and see which fields reject it.

0characters
0words
fields it fits
PlacementFieldLimitRoomVerdict
Google Search (responsive search ad)Headlineup to 15 headlines30
Descriptionup to 4 descriptions90
Display pathtwo fields15
Google Performance Max and Demand GenHeadline30
Long headline90
Description90
Business name25
Google Display (responsive display ad)Short headline30
Long headline90
Description90
Google ad assetsSitelink text25
Sitelink description line35
Callout25
YouTube video action adsHeadline15
Long headline90
Description70
Call to action10

Limits gathered from each platform's published ad specs, checked September 2026. Platforms change these quietly, so if a preview disagrees with this table, the preview wins.

Questions people ask

What is the character limit for Google Ads headlines?

30 characters per headline for responsive search ads, Performance Max and Demand Gen. Responsive search ads take up to 15 headlines, and Google shows up to three at a time. Long headlines in Performance Max and Demand Gen get 90 characters.

How long can a Google Ads description be?

90 characters per description. Responsive search ads take up to four descriptions and show up to two. The old expanded text ad format with 80 character descriptions was retired in 2022, so any guide still quoting 80 is out of date.

What are the limits for Google display path fields?

Two path fields of 15 characters each, appended to your display URL. They do not have to match the real URL path, so use them for the keyword or the offer.

What are YouTube video action ad character limits?

Headline 15 characters, long headline 90, description 70 and the call to action button 10. The 15 character headline is the tightest limit on any Google placement, which is why so many YouTube ads end up as two words.

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