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Seller and Marketing Tools

Ad Copy Length Checker

Check headline and description text lengths against common ad copy limits.

ToolRuns in the browser
Ad Copy Length Checker working example

Check headline and description text lengths against common ad copy limits.

Runs in your browser
Sample result
Example Ad Copy Length Checker result
Seller result
- Price, copy, margin, or operation note
- Channel-rule item to verify
- Next edit before publishing
Next step: adjust listing copy, compare margin, or prepare a review reply
The interactive tool loads in this area when JavaScript is enabled.

How to use Ad Copy Length Checker

Common uses include Review search ad headlines, Shorten campaign descriptions, Check byte length for Korean copy.

  • Open Ad Copy Length Checker and enter the product, price, campaign, review, or seller data you want to compare.
  • Check the fields that affect margin, copy, marketplace rules, or campaign assumptions. Focus first on Review search ad headlines.
  • Run the tool and compare the result with your store, ad platform, or product-page requirement. Use the next pass to Check byte length for Korean copy.
  • Use the output as a draft or calculation checkpoint for Shorten campaign descriptions.

Useful for

  • Review search ad headlines
  • Shorten campaign descriptions
  • Check byte length for Korean copy

Common issues

The margin or campaign result looks off.

Separate fee, tax, coupon owner, shipping cost, and ad spend before recalculating.

The generated copy may violate platform rules.

Check banned terms, exaggerated claims, medical claims, and customer personal data.

How to interpret the result

Use the output as a seller operations draft and compare it with the marketplace admin screen before publishing.

Related workflow

Next path: Ad Copy Length Checker -> ads.txt Generator and Validator -> Anchor Text Distribution Analyzer. Keep the original input nearby so you can compare each result before using it elsewhere.

Privacy and review notes

This tool is designed to process inputs in the browser where the workflow allows it. Photo and AI-assisted outputs are previews or references and should be checked before publishing. Use non-sensitive examples and review the output before sharing or submitting it.