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.

Coming this autumn.

Get a boost with new technologies.

macOS High Sierra introduces new core technologies that improve the most important functions of your Mac. From re-architecting how it stores your data to improving how you watch videos to unleashing the full power of the graphics processors, 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 organises 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 opens 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 Mac, 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 per cent 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 compression
Up to40%better compression

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 Along with key peripherals like the HTC Vive VR headset and apps like Final Cut Pro X, SteamVR, Epic Unreal 4 Editor and Unity Editor, developers will have everything they need to create immersive new worlds for you to explore.

Your favourite apps and features get a boost too.

Navigate, organise 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 organise. 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 using your library more efficient and fun.

Now you can organise your photos in a flash.

Instantly filter photo collections by your favourite 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 favourite batches of images straight from the toolbar.

Perfect your best shots with advanced editing tools.

Easily make sophisticated contrast and colour adjustments to your photos with powerful tools like Curves for fine‑tuning and Selective Color to make any colour 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 forwards and backwards. 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 favourite 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 favourite 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 projects extensions from the Mac App Store that let you order framed prints, create web pages and more, straight 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 behaviour, and removes the cross-site tracking data they leave behind. So your browsing stays your business.

Say goodbye to videos that autoplay.

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

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 favourite websites. Tailored to you. By you.

Personalise 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 outperforms 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

Let Siri be your personal DJ.

When you listen to Apple Music, Siri can now learn your preferences and offer recommendations.6 Need a weekend playlist? Ask Siri to make one. Feeling relaxed? Ask Siri to play something mellow. Siri is also a music expert that can read album notes and tell you more about songs, albums and artists.

Siri gets even more expressive.

Siri has a more natural voice, with more changes in expression, intonation and emphasis based on what it’s saying. In other words, your personal assistant sounds more like a person — whether it’s telling a joke or helping you find that presentation from last week.

Share with anyone straight from iCloud.

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.

Expand your search with Spotlight.

Now Spotlight does even more. Enter your flight number to see arrival and departure times, terminals, gates, delays — even maps. Looking for info about constellations? Musicians born in Galway? Former Taoisigh? Spotlight now shows multiple Wikipedia results when there’s more than one answer to your inquiry.

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.

Keep important notes at the top with pins.

Pin your most used notes, like shopping 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 organised.

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.

Now all your messages are always at hand.

macOS High Sierra automatically saves your entire message history in iCloud, so all your conversations and attachments are always available when you sign in to a new device. Keeping your messages in iCloud also lets you save space on your Mac.

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.

Take note: now you can add tables to Notes.

Need to organise a leaving do? Keep track of GAA stats? Track expenses on a business trip? Keep everything organised in a table, in Notes.

Be the first to try macOS High Sierra.

Sign up for the Apple Beta Software Programme