Free tools · RSA
RSA Character Counter & Ad Previewer
Draft your responsive search ad with live character limits and see exactly how it renders on Google — mobile and desktop. Runs entirely in your browser.
Your ad
HEADLINES · MAX 30 CHARACTERS
3/15 filled · Google needs 3+
26
30
18
0
0
0
0
0
0
0
0
0
0
0
0
DESCRIPTIONS · MAX 90 CHARACTERS
2/4 filled · Google needs 2+
87
79
0
0
Copies every headline & description, ready to paste into Google Ads Editor.
Google preview
MMamdigitalhttps://www.mamdigital.co.uk/google-ads/audit
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✦Good start — filling all 15 headlines lifts Ad Strength and gives Smart Bidding more to test.
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RSA character limits, explained
Responsive search ads are now the only search ad format in Google Ads — call-only ads were deprecated in favour of RSAs with call assets. Each RSA takes up to 15 headlines of 30 characters and 4 descriptions of 90 characters, plus two 15-character display paths. Google mixes and matches them per auction, usually showing 2–3 headlines and 1–2 descriptions.
What makes a strong RSA in 2026
- Fill all 15 headlines. More variants give Smart Bidding more combinations to test — Ad Strength rewards it.
- Vary the angle, not just the words. Mix benefit, proof, offer, urgency and brand headlines rather than 15 rephrasings of one idea.
- Pin sparingly. Pinning position 1 guarantees a message but cuts the combinations Google can serve.
- Front-load characters. On mobile, long headlines truncate — put the message in the first 20 characters.
- Write for AI Max too.With AI Max's looser matching, your copy needs to make sense against a broader set of queries.
FAQ
How many headlines does Google actually show?
Usually two or three, chosen per auction. On mobile it's often just two — which is why your strongest message belongs in multiple headlines.
Usually two or three, chosen per auction. On mobile it's often just two — which is why your strongest message belongs in multiple headlines.
Do punctuation and spaces count as characters?
Yes — every character counts, including spaces. This counter matches Google's counting exactly.
Yes — every character counts, including spaces. This counter matches Google's counting exactly.
Is my ad copy uploaded anywhere?
No. This tool runs entirely in your browser; nothing you type leaves your machine.
No. This tool runs entirely in your browser; nothing you type leaves your machine.