Apple Seeds Safari 5.1 Developer Preview for Mac and Windows to Developers - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Seeds Safari 5.1 Developer Preview for Mac and Windows to Developers

by

safari iconAlongside yesterday's high-profile developer seeds of OS X Lion Developer Preview 4, the first iOS 5 beta, and several iCloud-related betas including iTunes 10.5 and iPhoto 9.2, Apple also provided developers with a developer preview version of Safari 5.1 for both Mac and Windows. According to an announcement on Apple's developer portal, Safari 5.1 brings a number of enhancements to the company's flagship browser and will be available to the public sometime this summer.

Safari and Mac Developer Program members can download Safari 5.1 Developer Preview and take advantage of new technologies, including support for full-screen webpages, media caching with the HTML5 application cache, and better graphics acceleration on Windows.

A number of new APIs supporting Safari Extensions are also included in the update, which will presumably be made available to the public alongside the release of OS X Lion.

A separate Safari 5.0.6 release is available for developers to test on Mac OS X Leopard systems.

Top Rated Comments

196 months ago
Ha. Firefox is such bloat on macs.
It used to be good...
Score: 4 Votes (Like | Disagree)
MonkeySee.... Avatar
196 months ago
I hope it bloats less on PC. Or I will have to get a Mac soon.

You're gonna get a mac just for safari!? good going! :D
Score: 2 Votes (Like | Disagree)
196 months ago
I certainly hope this brings dramatic improvements over the current version. Safari is currently so unbelievably slow I can't even bring myself to use it. Pinwheels everywhere, and I have the latest hardware with maxed out RAM.

After the last update, this Apple's browser became really, really bad.
Mac mini Core 2 Duo with 8 GiB RAM and stock 5400 RPM 2.5" drive. Safari isn't slow at all. Plug-ins and Java are disabled.

Try to disable your plug-ins (in the Security options). Flash is probably the problem.
Score: 1 Votes (Like | Disagree)
196 months ago
Check the new setting!
Score: 1 Votes (Like | Disagree)
e-coli Avatar
196 months ago
I certainly hope this brings dramatic improvements over the current version. Safari is currently so unbelievably slow I can't even bring myself to use it. Pinwheels everywhere, and I have the latest hardware with maxed out RAM.

After the last update, this Apple's browser became really, really bad.
Score: 0 Votes (Like | Disagree)

Popular Stories

macOS 27 on MacBook Pro

Apple Says macOS 27 Won't Be Compatible With These Macs

Wednesday June 3, 2026 8:29 am PDT by
During WWDC 2025, Apple revealed that macOS 26 Tahoe would be the final major macOS version for Intel-based Macs. macOS 27 will be compatible with Apple silicon Macs only, meaning that you will need a Mac with an M-series chip or a MacBook Neo with an A18 Pro chip in order to install the software update. Apple will unveil macOS 27 during its WWDC 2026 keynote this Monday, June 8, and the...
MacBook Neo on Yellow Feature

MacBook Neo is So Popular That Apple Reportedly Doubled Production

Wednesday June 3, 2026 9:24 am PDT by
On an earnings call in late April, Apple's CEO Tim Cook said that customer response to the MacBook Neo was "off the charts," and the popularity of the laptop has reportedly led the company to significantly boost production. Apple supply chain analyst Ming-Chi Kuo this week said he believes that MacBook Neo shipments to Apple were doubled from an initial target of 5 million units to 10...
iphone 18 pro blue%402x

iPhone 18 Pro: Dark Cherry, Light Blue, and Dark Gray Chassis Leaked [Update]

Thursday June 4, 2026 5:18 am PDT by
Update: Since publication, new information has come to light suggesting the images have been AI-manipulated and are not in fact iPhone 18 Pro chassis parts. The original article follows. The color options Apple is reportedly planning for the upcoming iPhone 18 Pro and ‌iPhone 18 Pro‌ Max have appeared online today in the form of images of chassis parts of unknown authenticity....