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Google responsive display ads: every text limit for 2026

Published 7 Oct 20264 min readAll posts

With responsive display ads you upload headlines, descriptions, images and logos, and Google generates ad combinations for websites, apps, YouTube and Gmail¹. Google adjusts the size, appearance and format to fit the available ad space¹, so the same text can end up in a small banner or a large card.

The numbers below come from Google’s own documentation. We checked each page on 7 October 2026 and cite it next to the number.

The text limits

Source: Google Ads API reference, ResponsiveDisplayAdInfo².

Double-width characters count twice

In Google Ads text ads, each character in double-width languages such as Korean, Japanese or Chinese counts as two toward the limit³. The business name and call to action are measured as display width², so plan for wide scripts to fit about half as many characters.

Writing to these limits

These are our suggestions, not Google rules:

• Make every short headline different. Five headlines that say the same thing give Google nothing to combine.
• Put the offer first. Google resizes ads to fit the space¹, so the first words are the safest.
• Don’t repeat your business name in every headline; it has its own field.
• Check each language separately, especially Korean, Japanese and Chinese.

You can check headlines and descriptions with our free ad limit checker, or see the search ad limits for headlines and descriptions.

Sources and credits

All limits are credited to Google and were read on Google’s own sites on 7 October 2026. Google Ads, YouTube and Gmail are trademarks of Google LLC. Truncly isn’t affiliated with or endorsed by Google.