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

A
aimbdd
199 months ago
Ha. Firefox is such bloat on macs.
It used to be good...
Score: 4 Votes (Like | Disagree)
MonkeySee.... Avatar
MonkeySee....
199 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)
Y
Yvan256
199 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)
D
dickie001x
199 months ago
Check the new setting!
Score: 1 Votes (Like | Disagree)
e-coli Avatar
e-coli
199 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)
Read All Comments

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Today in Every Time Zone [Update: It's Out]

Sunday September 13, 2026 3:00 am PDT by
Update 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking! Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...
Read Full Article • 151 comments
iOS 27 Icon iPhone

iOS 27 Available Now With These 8 New Features

Monday September 14, 2026 9:00 am PDT by
Update — 10 a.m. Pacific Time: Apple has released iOS 27. During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update. Below, we have highlighted eight new features and...
Read Full Article • 111 comments
Apple iCloud Plus expansion hero

iCloud+ Now Includes Apple TV, Apple Arcade, and Curated Apple Music Stations in Over 100 Countries

Tuesday September 15, 2026 1:43 am PDT by
Apple today announced a new subscription initiative that turns paid iCloud+ subscriptions into a broader services bundle in more than 100 countries. In select countries, Apple says every paid iCloud+ plan, including the cheapest 50GB tier, now includes Apple TV and Apple Arcade "at no additional cost," while family sharing extends the storage, TV and Arcade access to up to five people....
Read Full Article • 104 comments