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Google Ads Scripts to Drop Support for Ad Customizers and Legacy Extensions

June 27, 2025
In this illustration, a woman and a man engage with abstract elements. The woman holds a yellow circle, symbolizing agencies' creative role, while the man raises a light bulb. Various icons and connected lines surround them, highlighting collaboration and innovation.

Starting July 14, 2025, Google Ads scripts will begin returning errors for any requests involving ad customizers in expanded text ads (ETA) or feed-based legacy ad extensions.

These features were deprecated years ago and are now being fully removed:

  • AdsApp.AdCustomizerSource and related methods will stop working
  • withOnlyLegacy() selectors will return errors
  • withOnlyUpgraded() will log a warning (since asset-based extensions are now the default)

If your scripts still reference these, now’s the time to clean up or refactor to avoid breakages.

In this illustration, a woman and a man engage with abstract elements. The woman holds a yellow circle, symbolizing agencies' creative role, while the man raises a light bulb. Various icons and connected lines surround them, highlighting collaboration and innovation.

Read the full announcement here: Google Ads Scripts Sunsetting Ad Customizers for Expanded Text Ads and Legacy Ad Extension Entities Starting July 14, 2025.

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