SquirrelFish Extreme Accelerates JavaScript Even More - MacRumors
Skip to Content

SquirrelFish Extreme Accelerates JavaScript Even More

113350 extreme
longer bars represent faster speeds

The Webkit blog has posted benchmarks on their "next generation" JavaScript interpreter called SquirrelFish Extreme (SFX). SquirrelFish Extreme uses "more advanced techniques" to deliver even faster JavaScript performance.

The new version of SquirrelFish is nearly twice as fast the first version of SquirrelFish which we previously reported on. It is also over three times faster then the current Safari 3.1 version that is available from Apple.

JavaScript is heavily used in many modern interactive websites, including Apple's own MobileMe web apps. Google is also investing heavily in improving JavaScript performance and is working on their own accelerated JavaScript interpreter called V8. According to one blog, SquirrelFish Extreme is 38% faster than the current version of V8.

SquirrelFish Extreme is available in the nightly betas of Webkit for personal testing, and should eventually make its way into future Safari releases.

Popular Stories

Apple Wallet

iOS 27 Will Add Two New Apple Wallet Features to Your iPhone

Monday June 1, 2026 12:15 pm PDT by
Apple is set to unveil iOS 27 during its WWDC 2026 keynote on Monday, June 8, and the update will reportedly include two new Apple Wallet features. First, iOS 27 will reportedly let users create their own digital passes by scanning items like movie tickets, concert passes, and gym membership cards. Many apps already offer Apple Wallet passes, but now users will be able to create a custom...
HomePod mini and Apple TV Sage

New Apple TV and HomePod Mini Are 'Nearly Ready' to Launch, New Siri Remote Also Rumored

Sunday May 31, 2026 8:47 am PDT by
New models of the Apple TV 4K and HomePod mini are "nearly ready to go," according to the latest word from Bloomberg's Mark Gurman. Subscribe to the MacRumors YouTube channel for more videos. Both devices have been ready "for months," but Apple is holding off on launching them until the more personalized version of Siri is available, he said. "I am told the hardware for the next Apple TV...
Apple Foldable Thumb

First 'Confirmed' iPhone Ultra Color Allegedly Revealed in Leaked Image

Monday June 1, 2026 4:39 am PDT by
Apple is expected to launch its first foldable iPhone later this year. Rumors suggest the "iPhone Ultra" will come in two color options, and a leaker shared an image today that allegedly shows one of them. Posted on Weibo by the Chinese leaker known as Ice Universe, the image purportedly offers a first glimpse of Apple's foldable in white. The device is believed to have entered early mass...