Ad Copy Character Checker
Write and check headlines, descriptions and primary text against Google, Meta and LinkedIn limits, with live counters and warnings.
Runs entirely in your browser. Nothing you type is sent to me or stored on a server.
How to use it
- Choose the platform you’re writing for.
- Type or paste your copy. The counter turns amber near the limit and red when you go over.
- Fix anything flagged in the summary, then copy everything in one go to paste into your ad platform or brief.
Limits checked October 2026 against Google Ads, Meta and LinkedIn help pages. Google counts Chinese, Japanese and Korean characters as two. Platforms change their limits from time to time, so check the ad preview before you launch.
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