iOS 27.3 Adds Vertical Tabs, Adaptive Dark Mode to Safari

Apple is adding vertical tabs and an Adaptive Dark Mode to Safari with iOS 27.3, iPadOS 27.3 and macOS Golden Gate 27.3. The December updates will also expand Siri’s browser controls, including organizing tabs and clearing site-specific history, with a later feature allowing Siri to understand and answer questions about content across multiple open webpages. MacRumors reports: Vertical Tabs are located on the left side of the display and use icons by default to save space, but there is an option to make the tab bar wider to show website titles as well. Vertical Tabs work with both Topics and Tab Groups to keep things organized. Topics are created when automatic Apple Intelligence tab sorting is turned on in iOS 27. Pinning tabs by dragging, quickly swapping between Tab Groups, and other features also continue to work.

[…] Apple is adding Adaptive Dark Mode for websites that don’t have a dark mode design option by default. If you use Dark Mode and then browse to a website with a bright background color, Safari will offer an option to “Try” Adaptive Dark Mode. After tapping Try, Safari renders a Dark Mode version of the page that makes the background darker, changes text contrast, inverts logos and graphics, recolors vector artwork, lifts raised surfaces, and rebalances layered shadows.

Each website will be adapted based on what’s needed to make it readable, so not every tweak is applied to every site. You can opt to turn Adaptive Dark Mode on for all sites or on a site-by-site basis after using it. If a site has a native dark mode or has a dark design already, Adaptive Dark Mode won’t activate. Developers can also add a tag that causes Safari to ignore Adaptive Dark Mode and show the website as the developer intended.

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