Write sharper ads.
Check every character.
Edit responsive search ad copy without publishing it to any platform. See instant length checks and a simple example preview.
Google Ads Responsive Search Ad Copy Checker
Check up to 15 headlines and 4 descriptions for common RSA length limits, duplicates and asset counts.
Enter your headline and description variations to see the checks.
Headline review
Description review
Illustrative ad combination
Google chooses and may rearrange assets; this preview is illustrative, not a rendering guarantee. Double-width character rules and platform validation can differ from a browser count.
Google Ads Responsive Search Ad Copy Checker: what to know
Responsive Search Ads accept up to 15 headlines (30 characters each) and four descriptions (90 characters each). Google currently specifies at least three headlines and two descriptions when creating an RSA. Include varied, relevant messaging rather than repeatedly changing a single word.
See Google’s RSA help for current platform specifications. Some languages count double-width characters differently.
Does this tool send my inputs to a server?
No. Tool calculations and editing run locally in your browser, without an account or an application backend. The separate Google Analytics script may load as disclosed in our privacy policy.
Are results a substitute for a platform or professional review?
No. The tool checks basic length and duplication only. Google Ads has additional editorial, policy, language and account-level requirements.
Explore Google Ads management ↗ · Explore website services ↗