How to add an icon to the Mac Dock, and change it

To add an app icon to the Mac Dock, open the Applications folder in Finder and drag the app onto the Dock, to the left of the separator line (or above it, if the Dock sits on a side of the screen). If the app is already running, Control-click its icon in the Dock and choose Options, then Keep in Dock. Files and folders go on the other side of the line, next to the Trash. Those two moves cover most searches for this question. The rest of this page handles the cases where they do not work: the icon that vanishes after quitting, the website that refuses to sit among the apps, and the icon whose picture needs to change.

All Apple instructions quoted below were checked against the Mac User Guide on October 18, 2026, which now covers macOS 27 as the newest version.

Where an icon can go: the three zones of the Dock

The Dock looks like one strip, but it is split by thin separator lines into zones, and each zone accepts different things. Apple's own instructions for adding an item are written entirely around those lines:

Drag apps to the left side of (or above) the line that separates the recently used apps. Drag files and folders to the right side of (or below) the other line that separates recently used apps. Source: support.apple.com

In practice that gives three areas:

Zone	What it holds	Does it stay?
Left of the first line	Apps kept in the Dock	Yes, until removed
Between the lines	Up to three recently used apps that are not already kept	No, it changes on its own
Right of the second line	Files, folders, stacks such as Downloads, and the Trash	Yes, until removed

The middle zone is the source of a lot of confusion. An app that appears there was not added by anyone. macOS put it there because it was opened recently, and it will be replaced by the next app that is opened. The setting that controls this zone is "Show suggested and recent apps in Dock" in System Settings, under Desktop & Dock. With that option off, the middle zone disappears and the Dock shows only what was kept on purpose.

One more detail from the same Apple page matters later: whatever is dropped on the Dock becomes an alias. The Dock never holds the item itself, which is why dragging an icon out of the Dock until Remove appears is harmless. Only the alias goes; the app or file stays on the Mac.

Adding an app so the icon stays

There are two routes, and each suits a different moment.

From Finder

1. Open Finder and choose Go, then Applications (or press Shift-Command-A).
2. Find the app. Many apps sit directly in the folder; some are inside a subfolder named after the developer.
3. Drag the app icon onto the Dock, into the area left of the separator. The neighbouring icons slide apart to show the drop position.
4. Release. The icon stays from that moment on.

From a running app

When an app is open, its icon shows in the Dock whether or not it was kept there. To make it permanent:

1. Control-click (or right-click) the icon in the Dock.
2. Choose Options.
3. Choose Keep in Dock, so that a check mark appears beside it.

Apple describes this second route as the fix for an icon that was removed by accident, and it is also the quickest way in general, because the icon is already under the pointer. If an app opened from Spotlight or Launchpad keeps disappearing from the Dock after it quits, Keep in Dock was never ticked.

Rearranging works the same way for both routes: drag an icon along the Dock to a new position and the order is saved. The Dock also has a keyboard route that few guides mention. Press Fn-Control-F3 to move focus to the Dock, use the Left and Right Arrow keys to step through icons, and press Return to open one.

Adding files, folders and stacks

Documents, folders and shortcuts to servers belong on the right side of the second separator. Dragging one there works exactly like dragging an app, but the item will not land among the apps however carefully it is aimed. That is not a fault. The Dock is sorting the item by type.

Folders behave a little differently from files once they are in the Dock. A folder can be shown as a stack, which fans out or opens as a grid when clicked. Control-click the folder in the Dock to choose between Stack and Folder for the display, between Fan, Grid and List for the view, and how the contents are sorted. The Downloads folder that comes with the Dock is a stack set up this way.

A practical use of this zone is a folder of aliases. Put aliases of several projects, scripts or documents into one folder, drag that folder to the Dock, and the Dock gains a single icon that opens a menu of all of them. That keeps the strip short while still giving one click access.

Changing the picture on an icon

Changing what an icon looks like is a separate job, and it happens in Finder rather than in the Dock. The Dock simply displays whatever icon the item has. Apple documents the steps for files and folders:

In the Info window, click the small icon at the top of the window, below the title bar. Choose Edit > Paste in the menu bar. Source: support.apple.com

The full sequence:

1. Open the image to be used in Preview.
2. Choose Edit, then Copy, so the picture is on the Clipboard. A square PNG with a transparent background gives the cleanest result.
3. In Finder, select the app, file or folder whose icon will change.
4. Choose File, then Get Info.
5. Click the small icon at the top left of the Info window, so that it is highlighted.
6. Choose Edit, then Paste.

To undo it, select the same small icon in the Info window and choose Edit, then Cut. The original icon returns.

Three things trip people up here. First, the Dock sometimes keeps showing the old picture for a while. Removing the icon from the Dock and adding it again usually refreshes it. Second, Apple's page notes that folders that come with the Mac, such as Applications, Library, System and Users, cannot be customized, and apps that ship with macOS sit in protected locations, so they may not accept a new picture at all. Third, a pasted image keeps its own shape. Native Mac icons use a rounded square with a soft corner curve, so a plain square image looks out of place next to them unless the corners are rounded before pasting.

For folders specifically, newer versions of macOS add a lighter option: select a folder, open the action menu in the Finder toolbar, and choose Customize Folder to change its colour or add a symbol or emoji, without preparing any image.

When the icon you want is a website

Many people searching this question are not trying to add an app at all. They want a site they open every day, such as a mail inbox, a calendar or a dashboard, to sit in the Dock like an app. Dragging the address from the browser does not do that. It creates a link file, and because a link is a document, the Dock places it on the right side, next to the Trash. Clicking it opens a new tab in the default browser, not a separate window.

To get a website into the app zone, the site has to become an app first. macOS and Chrome both offer a built in way:

Route	How	Where the app is saved	Icon can be changed
Safari (macOS Sonoma 14 or later)	File, then Add to Dock	Applications folder in the home folder	Yes, in the web app's Settings
Chrome	More menu, Cast, save, and share, then Install page as app	Chrome Apps folder in the home folder's Applications	Only by the Finder method above

Apple's support article on Safari web apps states that the result can have any name or icon, and that it keeps its own cookies and website data separate from Safari:

A web app functions independently of Safari. It shares no browsing history, cookies, website data, or settings with Safari. Source: support.apple.com

To change the picture on a Safari web app, open the web app, click its name in the menu bar, choose Settings, and click the icon shown there to pick a new image. For Chrome, Google's help page lists the install step under the More menu as Install page as app, and once installed the app appears in the Dock while it runs, so the Keep in Dock step from earlier applies to it as well.

At the top right, select More, Cast, save, and share, Install page as app. Source: support.google.com

A third route is a tool that turns a website into a standalone Mac app. These tools build a real .app bundle, so the icon goes into the app zone like any other program, and they usually add things the built in routes lack, such as choosing which browser powers the app or giving each app its own login data. They are worth considering when several sites need icons and the built in options start to feel thin.

When the icon disappears or shows a question mark

A few symptoms come up again and again, and each one has a specific cause.

The icon vanishes when the app quits. It was only showing because the app was running. Open the app again, Control-click the icon, and choose Options, then Keep in Dock.

A question mark replaces the icon. The Dock is pointing at an alias whose original has moved or been deleted, often after an app was uninstalled or renamed. Drag the question mark out of the Dock until Remove appears, then add the app again from its current location. Apple keeps a separate article for this case, linked from the bottom of its Dock page.

The icon lands near the Trash. What was dragged is a file, a folder, or a link, not an app. That is the right side's job by design. If it needs to sit with the apps, it has to be an app, as described in the previous section.

An extra copy of an app appears beside the kept one. This usually happens with web apps or apps launched through a helper. The kept icon points at one file and the running process reports a different one. Removing the kept icon, launching the app, and choosing Keep in Dock on the running icon makes them match.

The Dock is too crowded to find anything. Turning off "Show suggested and recent apps in Dock" removes the middle zone. Dragging the separator line up or down resizes the whole Dock, and the size and magnification controls sit in System Settings, under Desktop & Dock.

What to change first

Start with the Keep in Dock step on the two or three apps opened most often, then switch off suggested and recent apps so the Dock only shows what was chosen. If the icons that matter are websites, turn them into apps before adding them; Kagemusha does that with an icon for each site and its own separate login data, and the features list shows what each app can be set to do.