Google removes AdSense vignette back button trigger ahead of spam deadline

Google has announced a big change for website owners who use AdSense to show ads. Starting June 15, 2026, Google will stop using the back button on browsers like Chrome, Edge, and Opera to show full-screen ads called vignette ads.

What is Changing?
Until now, website publishers who used a special feature in AdSense called “Allow additional triggers for vignette ads” could make ads appear when visitors pressed the back button. These are full-screen ads that pop up at certain times, like when a user leaves a page or goes back to a previous page.

Google initially added the back button trigger in February 2026, to show more types of ads. But this feature caused a problem because it was similar to “back button hijacking,” a practice Google considers spammy. Hijacking the back button tricks visitors by showing ads instead of letting them leave freely.

Why is this a problem?
Google’s Search Quality team announced a new spam policy in April 2026, and it includes rules against back button hijacking. If a site uses code that shows ads when someone presses back, it is considered violating Google’s spam policies. This could lead to penalties, including lower search ranking or restrictions on showing ads.

Since the back button trigger in AdSense acts like hijacking, Google decided to remove it. They will do this automatically on June 15, 2026, the same day their spam policies start enforcing penalties against back button hijacking. This means publishers who enabled the back button trigger will see it disappear from their settings without having to do anything.

What does this mean for publishers?

• If a publisher has turned on “Allow additional triggers for vignette ads,” the back button trigger will be removed on June 15, 2026.
• This removal is automatic; no action is needed from publishers.
• Other triggers, like those based on scrolling or inactivity, will stay active.

What is a vignette ad?
Vignette ads are full-screen ads that appear between pages or when a user navigates away and then returns. They can be closed by pressing a close button. These ads are different from banner ads that stay on the page or fixed ads that always stay visible.

How did this change happen?

• In February 2026, Google added six new triggers for vignette ads, including the back button.
• Publishers had one month to review and could turn these triggers on or off.
• In April 2026, Google announced new spam policies against back button hijacking and set a deadline of June 15, 2026, for enforcement.
• The conflict was that the feature in AdSense was technically showing ads in a way Google now rules as spam.

Why did Google make this change?
Google’s product teams work independently. The AdSense team developed features to increase revenue, while the Search Quality team creates policies to prevent spam. Sometimes, a feature that helps publishers also violates policies without anyone realizing it. Removing the back button trigger aligns with the new spam rules and helps prevent penalties.

What is next?
After June 15, 2026, the back button trigger will be gone. Publishers who want to continue using vignette ads based on other triggers can do so, but not on the back button. This change will help Google enforce its spam policies and ensure a better experience for users.

Summary

• Google will remove the back button trigger for vignette ads on June 15, 2026.
• This was added in February but now conflicts with new spam policies.
• The removal is automatic; publishers don’t need to take action.
• The change applies across supported browsers like Chrome, Edge, and Opera.
• The move is part of Google’s effort to stop back button hijacking and related spam tactics.

By making these updates, Google aims to improve the integrity of web browsing and advertising while helping publishers stay compliant with policies.