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Modern websites and apps can be demanding on your computer’s resources, especially battery life. Google is now making additional improvements to Chrome’s battery usage, specifically on Mac laptops.
Google announced today that Chrome 111, which will begin rolling out on March 1, 2023, includes some new battery optimizations for macOS. The company’s own tests say that a 13-inch MacBook Pro M2 can now last 18 hours while playing YouTube videos, or 17 hours when browsing the web normally. Chrome’s power saving mode takes you further in about 30 minutes.
Improved battery life comes from a few engine-level changes, including better memory management for embedded frameworks, reducing how often JavaScript timers hit the CPU, and skipping unnecessary redraws on load pages. Google said: “We navigated real-world sites with a bot and identified patterns of Document Object Model (DOM) change that do not affect the pixels on the screen. We tweaked Chrome to catch them early and avoid unnecessary styling, layout, painting, raster, and gpu steps. We implemented similar optimizations for Chrome UI changes.”
Google didn’t mention whether these specific improvements will also benefit Windows, Linux, or Android, but there have been some cross-platform performance tweaks in recent months. The behavior of JavaScript timers was changed in Chrome 107 on all platforms, helping to reduce CPU usage and improve battery life. Google also started testing a feature in Chrome 100 that sped up timers on foreground pages, reducing CPU usage by around 4% with seemingly no side effects, but that hasn’t been rolled out for everyone yet.
Source: chrome blog
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