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+
86
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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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.