Mac Dock Customization: Everything You Can Change (and What Requires an App)

macOS gives you a handful of dock customization options - size, position, auto-hide, and a few behaviors - but the list runs out fast. For anything beyond the basics (folders, multi-monitor docks, window previews, themes), you need a third-party app. Here's exactly what's built in, what its limits are, and what your options are when native falls short.

What you can change in macOS without any extra software

All of this lives in System Settings → Desktop & Dock:

• Size: drag the slider between Small and Large. This sets the maximum icon size; the dock will shrink if there are too many items.
• Magnification: hover magnification, controlled by a second slider. Toggle it on or leave it off.
• Position: Bottom (default), Left, or Right. Right-click an empty dock space and choose Position on Screen as a faster route.
• Auto-hide: tick Automatically hide and show the Dock. The dock disappears when not in use and reappears on hover.
• Animation: Animate opening applications toggles the bouncing icon on launch.
• Minimise effect: Genie (the stretchy default) or Scale (a plain shrink). Change it in the same panel.
• Show recent applications: shows a Recent Apps section at the right end of the dock. Turn it off if you find it cluttered.
• Minimise windows into application icon: minimized windows collapse into the app's dock icon rather than appearing as separate thumbnails.

There are also a few things you can do without going into Settings at all. Hold Option and drag the divider line (the thin separator between apps and the right-hand section) to resize the dock live. Drag any app icon off the dock and release to remove it. Drag an app from Finder onto the dock to pin it.

Why the dock icon size slider doesn't always do what you expect

The size slider sets a maximum, not an absolute. If you have 30 apps pinned and set the slider to Large, macOS will shrink every icon until they all fit - often down to something tiny. The slider only reaches its full value when there are few enough items to fill the space.

This catches people out when they set size to maximum and wonder why their icons are still small. The fix is to remove items from the dock, or use magnification to make individual icons larger on hover. If you want a consistently large dock with lots of apps, folders help - though macOS's native folder implementation (which creates a stack/grid view) is awkward compared to what iOS does.

How to make the dock show on all monitors, not just one

By default, the macOS dock lives on one monitor. It temporarily moves to whichever monitor your mouse is at the very bottom of, but that behavior is slow and inconsistent - there's no persistent dock on each display.

Apple hasn't addressed this in Sequoia. If you regularly work across two or three monitors, the constant mouse trip to the primary display adds up.

Dockish solves this directly: it puts a full dock on every connected monitor simultaneously. Each display can show a mirrored copy of the same dock, or an independent dock with its own set of pinned apps - useful if you have a work monitor and a personal display and want different shortcuts on each. It also handles hot-plug correctly, so when you connect or disconnect a monitor, the docks adjust automatically.

How to group dock apps into folders

Native macOS has no app folders in the dock the way iOS does. You can create a folder in Finder and drag it to the dock's right-hand section, and it'll appear as a stack that fans out or shows a grid - but it only works with files and folders, not apps, and the UI is nothing like the iPhone folders most people expect.

Dockish adds iPhone-style app folders: drag one app icon onto another to create a folder, which shows a 2×2 preview grid and auto-names itself based on the apps inside. It behaves the way you'd expect from muscle memory if you've ever organized an iPhone home screen.

Why clicking a dock icon doesn't bring back a minimized window

This is a long-standing macOS behavior that confuses switchers from Windows. If you minimize a window and then click the app's dock icon, macOS brings the app to focus - but doesn't restore the minimized window. You have to click the thumbnail in the right-hand section of the dock, or use the Window menu inside the app.

The exception is if you've enabled Minimise windows into application icon in System Settings → Desktop & Dock. With that on, minimized windows collapse into the app icon, and clicking the icon again restores them. The downside: you can't tell how many windows are minimized without right-clicking.

Dockish handles this more sensibly: clicking an app icon launches it if it's not running, focuses it if it's already visible, and restores it if it's minimized - the behavior most people assume the dock already has. Hovering an app icon also shows live window previews, so you can see and click directly into any open window.

How to customize dock icon size, spacing, and appearance

macOS's size slider is the only appearance control you get natively - no spacing adjustment, no themes, no icon label toggles.

If you want more control:

• Icon size: Dockish supports 24-96px, set precisely, not via a vague slider.
• Spacing: adjustable gap between icons.
• Magnification: configurable magnification level with spring animations at 120Hz on ProMotion displays.
• Themes: glass (like the native dock), dark, light, or a custom color tint.
• App name labels: toggle visible labels under icons, off by default.
• Dividers and spacers: add visual breaks between icon groups.
• Dock edge: bottom, left, or right - same as native, but configurable independently per monitor in Dockish.

You can also hide the native macOS dock entirely with one click inside Dockish (fully reversible), so you're not running two docks at once.

What the macOS dock still doesn't do in Sequoia

Sequoia didn't touch the dock meaningfully. The multi-monitor situation is unchanged. Folders still don't work with apps. The minimized-window behavior is the same as it's been for years. The size constraints from having many pinned apps remain.

For most of these, a dock replacement app is the only real fix. Dockish is $6.99 one-time (7-day free trial, macOS 14+) and covers the common gaps: per-monitor docks, iPhone-style folders, correct minimized-window handling, live previews, and full appearance customization. If you only want window previews and nothing else, DockDoor is a free option worth checking out - it adds hover previews to the native dock without replacing it.

Common questions

Why is my Mac dock not showing on my external monitor?

macOS only shows the dock on one monitor at a time by default - it appears on whichever screen your cursor is at the very bottom of. There's no setting to make it persistent on all monitors simultaneously. Apps like Dockish add a permanent dock to every connected display.

How do I make my Mac dock icons bigger?

Go to System Settings → Desktop & Dock and drag the Size slider to the right. If icons still appear small, the dock has too many items to fit at your chosen size - remove some icons or enable magnification so icons enlarge on hover. Dockish lets you set an exact pixel size (up to 96px) regardless of how many items are pinned.

Can I customize the Mac dock on Sequoia the same way as older macOS versions?

Yes - the dock settings in Sequoia are largely unchanged from previous versions. System Settings → Desktop & Dock has the same size, position, auto-hide, and animation controls. Sequoia's main dock-adjacent addition was window tiling, which is separate from the dock itself. Third-party apps like Dockish add the customization options Apple hasn't shipped: per-monitor docks, app folders, themes, and live window previews.