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Google's Chrome Browser to Block Battery-Draining, Data-Guzzling Ads

If an ad reaches its limit on CPU usage or network bandwidth, Chrome will pull the plug on the ad, forcing it to show as a gray blank space.

 & Michael Kan Principal Reporter

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Google is working to make the Chrome browser shut down ads that drain your device’s battery life or needlessly consume your internet’s bandwidth. 

The scale of the problem is pretty minor, affecting 0.3 percent of all the ads on the internet, according to Chrome product manager Marshall Vale. Nevertheless, these intrusive ads can hog your system resources without your knowledge. 

“These ads (such as those that mine cryptocurrency, are poorly programmed, or are unoptimized for network usage) can drain battery life, saturate already strained networks, and cost money,” Vale wrote in a blog post on Thursday. 

In response, Google is going to limit the system resources an online ad can use before you click on the ad. “When an ad reaches its limit, the ad's frame will navigate to an error page, informing the user that the ad has used too many resources,” Vale added. As the example below shows, the intrusive ad will come up as a gray blank space, rendering it useless. 


Example of battery-draining ad now useless (Credit: Google)

According to Vale, Google plans on targeting the most egregious ads that use more CPU or network bandwidth than 99.9 percent of ads that tap the same system resources. Specifically, the company will block ads that meet any of the following criteria

  • Uses the main CPU for more than 60 seconds in total.
  • Uses the main CPU for more than 15 seconds in any 30 second window.
  • Uses more than 4 megabytes of network bandwidth.

“While only 0.3 percent of ads exceed this threshold today, they account for 27 percent of network data used by ads and 28 percent of all ad CPU usage,” Vale added. 


The scale of the problem, according to Google. The scale of the problem, according to Google.

The plan is to experiment with the ad-blocking technique over the next few months before rolling out the feature in a Chrome stable release near the end of August. Shady ad companies and in-browser cryptocurrency mining providers will probably hate the move, but the upcoming change is part of the company’s ongoing effort to prevent users from flocking to more powerful ad blocking software, which would risk undermining Google’s main business of serving ad space.

“Our intent with this extended rollout is to give appropriate time for ad creators and tool providers to prepare and incorporate these thresholds into their workflows,” Vale said. “To help advertisers understand the impact of this intervention on their ads, they can access reports to learn which ads Chrome unloaded.”

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About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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