Because of Mozilla’s non-stop minor Firefox releases with major integer version numbers, we haven’t covered Firefox in the TidBITS Watchlist for over a year (see “Firefox 49.0,” 22 September 2016). However, the release of Firefox 57 — dubbed Firefox Quantum — is worth mentioning, thanks to its speed enhancements, revamped user interface, and improved memory usage. Mozilla has overhauled Firefox Quantum’s browser core with a new CSS engine that takes better advantage of multi-core processors optimized for low power consumption. The new version now prioritizes the tab you’re viewing over all others to make better use of system resources, and it shuts down video decoding when the tab playing the media is sent to the background or the video is not visible on the screen. The new release also brings a unified address and search bar, a revamped new tab page that includes top visited sites, and an expanded preference section to manage all Web site permissions. (Free, 52.5 MB, release notes, 10.9+)
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