"Brave Software has reworked its browser's Rust-based adblock engine to make it significantly more memory efficient and perhaps more secure. So you get fewer ads now with fewer MB of RAM. According to Shivan Kaul Sahib, VP of privacy and security for Brave, company software engineers have been able to reduce memory consumption by around 75 percent since the reengineering began last year."
""The upgrade represents roughly 45 MB of memory savings for the Brave browser on every platform (Android, iOS and desktop) by default, and scales even higher for users with additional adblocking lists enabled," said Sahib in a blog post. The benefits of reduced memory consumption include improved battery life and smoother multitasking, while also leaving more memory for other applications."
Brave reworked its Rust-based adblock engine to reduce memory usage by about 75 percent, improving efficiency and potentially security. Engineers report roughly 45 MB of memory savings by default across Android, iOS and desktop, with larger savings for users with extra adblocking lists. Reduced memory use yields improved battery life, smoother multitasking, and more RAM for other applications. Version footprints dropped from 162 MB in v1.79.118 (May 2025) to 104 MB in v1.85.118. Independent testing on macOS showed reductions after disabling the Leo AI assistant, though GPU process memory increased in one screenshot. Performance measurement relies on averaging across runs.
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