macOS  High Sierra Your Mac. Elevated.

New technologies at the heart of the system make your Mac more reliable, capable, and responsive — and lay the foundation for future innovations. macOS High Sierra also refines the features and apps you use every day. It’s macOS at its highest level yet.

Available 9.25

Get a boost with new technologies.

macOS High Sierra introduces new core technologies that improve the most important functions of your Mac. From rearchitecting how it stores your data to improving the efficiency of video streaming to unleashing the full power of your graphics processor, it’s all central to today’s Mac experience.

Apple File System.
Your data is under new management.

Your documents. Your photos. Your mail. Your apps. To your Mac, everything you care about is data. And a file system is what organizes all that data into files and folders you can access with a click. Our current file system was designed in the early days of Mac, and it has performed beautifully ever since. But today’s flash‑based Mac systems open up new possibilities for innovation, so it’s time to lay a new foundation. With macOS High Sierra, we’re introducing the Apple File System to every Mac with all‑flash internal storage, with an advanced architecture that brings a new level of security and responsiveness.

  • Advanced. A new 64‑bit architecture is designed for today’s flash technology and ready for tomorrow’s new storage capabilities.

  • Responsive. Designed to make common tasks like duplicating a file and finding the size of a folder’s contents happen instantly.

  • Safe and secure. Enjoy even more peace of mind with built‑in encryption, crash‑safe protections, and simplified data backup on the go.

HEVC. The new standard for video.

With the rising popularity of 4K video, a new industry standard arrives on Mac — HEVC (High Efficiency Video Coding, also known as H.265).1 It can compress video up to 40 percent more than H.264, the current standard for video compression. Using HEVC, videos stream better and take up less space on your Mac, while preserving the same visual quality.2

Up to40%better
Up to40%better

Metal 2. A graphics game changer.

Today’s Mac experience relies more than ever on the graphics processor (GPU) in your computer. And GPUs are becoming more and more powerful. Metal is a technology built into macOS that allows apps to unleash the full power of the GPU. Now Metal 2 not only takes the visual experience to the next level, but also adds capabilities like machine learning, virtual reality, and external GPU support for entertainment and professional creative apps. Whether you play games, create content, or develop software, Metal 2 provides the power to bring your imagination to life.

Virtual reality for Mac.
It’s a whole new world.

macOS High Sierra lets developers create interactive virtual reality experiences on Mac for the first time, using the new iMac with Retina 5K display, the new iMac Pro coming in late 2017, or any supported Mac paired with an external GPU.3 With optimized support for Valve’s SteamVR and the HTC Vive VR headset, and content creation apps like Final Cut Pro X, Epic Unreal 4 Editor, and Unity Editor, developers have everything they need to create immersive new worlds for you to explore.

Your favorite apps and features get a boost, too.

Navigate, organize, and edit your photos like never before with new features in the Photos app. Tailor your web browsing experience in Safari. Find what you’re looking for even faster in your Mail inbox. macOS High Sierra makes a great experience even greater.

Photos. More ways to edit. More ways to organize. More ways to wow.

People love working with their photos on a Mac. So for macOS High Sierra, we focused on giving you new tools that make organizing your library more efficient and fun.

Learn more about Photos for macOS

Now you can organize your photos in a flash.

Instantly filter photo collections by your favorite criteria. A new selection counter keeps track of what you’ve selected, and lets you drag and drop collected images into an album or export them to the desktop. You can also rotate and favorite batches of images right from the toolbar.

Perfect your best shots with advanced editing tools.

Easily make sophisticated contrast and color adjustments to your photos with powerful tools like Curves for fine‑tuning contrast and Selective Color to make any color more saturated. And new, professionally inspired filters let you quickly give your pictures a distinctive look.

Bring even more life to your Live Photos.

When editing a Live Photo, try the new Loop effect to turn it into a looping video that you can experience again and again. Try Bounce to play the action forward and backward. Or choose Long Exposure for a beautiful DSLR‑like effect to blur water or extend light trails. You can also trim, mute, and select a key photo for each Live Photo.

Relive your favorite moments with new Memories.

macOS High Sierra introduces more than a dozen new Memories categories — including pets, babies, outdoor activities, performances, weddings, birthdays, and sporting events — for even more personal and meaningful moments.

The People album gets even better with faces.

Easily find your favorite subjects in the People album with larger image thumbnails and more accurate groupings. And when you use iCloud Photo Library, your album stays up to date on all your devices.

More ways to work with third‑party apps.

Open a picture in a third‑party photo editing app like Photoshop or Pixelmator directly from Photos, and your edits will automatically be saved in your Photos library. You can also download third‑party project extensions from the Mac App Store that let you create web pages, and more, right from the Photos app.

The features you love.
Now with more to love.

Intelligent Tracking Prevention. Keep your browsing to yourself.

Remember when you looked at that green mountain bike online? And then saw annoying green mountain bike ads everywhere you browsed? Safari now uses machine learning to identify advertisers and others who track your online behavior, and removes the cross‑site tracking data they leave behind. So your browsing stays your business.

Say goodbye to videos that auto‑play.

Now Safari keeps unexpected and unwanted videos with audio from playing in the first place, so you can browse in peace. Have a favorite site where you always want videos to play? Use new per‑site settings in Safari to enable media auto‑play.

Reader. Always on.

Automatically use Safari Reader for every web article that supports it, so you can view websites without ads, navigation, and other distractions.

Your favorite websites. Tailored to you. By you.

Personalize your browsing experience in Safari by enabling settings for individual websites, like page zoom level, location services, notifications, and content blockers. So each website appears just how you like it.

Browse faster. Watch longer.

Browse the Internet using Safari, the world’s fastest desktop browser. Safari smokes all other browsers on benchmark after benchmark in testing on both macOS and Windows, using the same Mac.4 You’ll also surf the web and watch Netflix videos for hours longer than other browsers.5

Learn more about Safari

Top Hits. A smarter way to search in Mail.

Mail search is now faster and easier with Top Hits, which puts the messages most relevant to your search right at the top of the list. Top Hits reflects the mail you’ve read, the senders you reply to, your VIPs, and more. And the more you search, the smarter it gets.

Capture the moment in FaceTime.

macOS High Sierra lets you save a special moment in a FaceTime call as a Live Photo. Both participants receive a notification that the photo was taken, and the Live Photo goes into your Photos library.

Keep important notes at the top with pins.

Pin your most used notes, like grocery lists, to‑do lists, and meeting agendas, to the top of Notes so you can easily find them when you need them. Your thoughts have never been so organized.

Take note: Now you can add tables to Notes.

Need to organize a potluck? Keep track of Little League stats? Track expenses on a business trip? Keep everything organized in a table, right in Notes.

Share with anyone right from iCloud Drive.

Easily share any file stored in iCloud Drive with a link. The people you invite can simply click the link and get to work — no creating copies, sending attachments, or managing versions.

Learn more about iCloud Drive

iCloud storage plans. With room for the whole family.

Now you can share an iCloud storage plan with your entire family. Choose 200GB or 2TB and give everyone enough space to store photos, videos, documents, and more.

Learn more about iCloud