Telling your Mac apps apart when the icons all look alike

To customize an app icon on a Mac, open the new image in Preview, choose Edit > Copy, select the app in the Finder, choose File > Get Info, click the small icon at the top of the Info window, and choose Edit > Paste. That is the whole of the built-in method, and it works for most apps you installed yourself. It does not work for the apps that came with macOS, it does not survive every kind of update, and since macOS Tahoe there is a second, system-wide control that changes how every icon looks before any custom picture is involved.

This guide covers all three layers: the per-app paste, the system appearance setting, and the icon that is set when an app is built. It also covers the cheaper fix that most icon tutorials skip, which is arranging and naming apps so that the picture matters less.

The Get Info method, checked against Apple's current guide

Apple documents the procedure on its page about how to customize the look of folders and files on Mac. The steps below were checked against that page on October 18, 2026. The page is written for files and folders, and an app in the Applications folder is treated the same way.

Changing the icon

1. Double-click the image file so it opens in Preview.
2. In the menu bar, choose Edit > Copy. This copies the picture itself, not the file.
3. In the Finder, select the app whose icon should change.
4. Choose File > Get Info, or press Command + I.
5. In the Info window, click the small icon at the very top, just below the title bar.
6. Choose Edit > Paste.

Apple names the most common failure directly. If Edit > Paste is not available, the click probably landed on the large icon in the Preview section lower down the Info window, not the small one at the top. The other common failure is a pasted icon that turns into a generic PNG or JPEG document symbol. That happens when the image file was copied in the Finder instead of being opened and copied from inside Preview.

Restoring the original

The current Apple guide restores the default by selecting the small icon at the top of the Info window and choosing Edit > Cut. Many older tutorials say to press Delete instead, and on current versions the Cut command is the documented route. Either way, nothing else about the app changes. Only the custom picture is removed.

Password prompts and a Dock that does not update

Apps in the Applications folder can ask for an administrator name and password before the change is accepted, which is normal when the account in use is not an administrator. The Dock also caches icons. If the old picture stays after a successful paste, quitting and reopening the app usually refreshes it. If not, removing the app from the Dock and adding it back does.

Why the built-in Apple apps refuse to change

The most common complaint in forum threads on this topic is that Safari, Mail, Notes, or Music will not accept a new icon. That is not a mistake in the steps.

Since macOS Catalina, the operating system runs on a separate volume that cannot be written to. Apple's support note on the read-only system volume explains that macOS lives on a dedicated volume called Macintosh HD, while personal files live on Macintosh HD - Data, and that files can no longer be stored on the system volume. The apps that ship with macOS sit on that sealed volume. A pasted icon is a change written onto the item, and an item on a read-only volume cannot take it.

For built-in apps, the realistic choices are the system appearance setting covered in the next section, or leaving them alone. Workarounds such as placing an alias with a custom icon in the Dock exist, but the alias only changes what the Dock shows. The app switcher and Spotlight still show the original.

Apps that you installed yourself, from the App Store or from a developer's site, live on the data volume and accept a custom icon. App Store apps can lose it again when the App Store installs an update, because the update replaces the app.

The system-wide setting that came with macOS Tahoe

Before pasting pictures onto individual apps, check whether the system already offers what is wanted. Apple's page on Appearance settings lists two controls that act on every icon at once. Both are under Apple menu > System Settings > Appearance.

Icon & widget style has four options:

Style	What Apple's guide says it does	When it helps
Default	Opaque icons with a light or colored background depending on the app	Keeps each app's own color, which is what makes most icons recognizable
Dark	Opaque icons with a darkened appearance, always or on Auto	Calmer Dock with dark mode, colors still distinct
Clear	Transparent icons, in Light, Dark, or Auto	A uniform look, at the cost of color as a cue
Tinted	Opaque icons against a dark background, in the theme color	One-color Dock; shapes do all the identifying

Liquid Glass is a slider that adjusts how app icons render, from clear at the far left to the heaviest tinting at the far right.

These options matter for anyone trying to tell apps apart. Clear and Tinted remove color from the set of cues, which is pleasant when every icon has a distinctive shape and painful when several icons are a single letter on a square. If a Dock became hard to read after an upgrade, look here first. Switching back to Default can fix the problem without touching a single app.

Apple's Human Interface Guidelines on app icons explain why the styles work for native apps: icons built for current macOS have a background layer and foreground layers, and the system applies its effects to those layers. A flat image pasted through Get Info has no layers, so it is treated as one picture.

Choosing an image that reads at Dock size

Most custom icon sets that disappoint fail for the same few reasons, and none of them have to do with the paste.

Screenshots fail. A shrunken interface turns into grey texture at Dock size, and screenshots of different web apps look much the same.

Text fails. A word in the middle of a square is unreadable at the size the Dock uses, and an icon large enough to read is mostly word and very little shape.

Hard squares look foreign. Native icons on current macOS use a rounded square shape. A square image pasted as is keeps its sharp corners and stands out against everything around it. Rounding the corners before copying the image makes it sit with the rest.

What works is a silhouette that is still recognizable in one color, plus a background color that differs from its neighbors. A quick test: shrink the candidate to roughly Dock size, step back to a normal seating distance, and check whether the shape alone identifies it. If only the color is doing the work, the icon will stop working the day another app arrives in a similar shade, or the day the Tinted style is switched on.

Consistency across the set matters as much as each choice. Six icons in six styles read as clutter even when each one is good. A shared background treatment with different marks reads as a family, and a family is quicker to scan.

The Dock is only one surface. The same icon appears large in the app switcher (Command + Tab), in a grid in the Applications folder, small beside each result in Spotlight, and in every notification banner. Before settling on an image, check it in the switcher and in a notification as well. Icons that look fine in a row in the Dock often fail in the switcher, where they are larger and shown at speed.

When the apps are websites, the favicon is the problem

A Dock full of apps made from websites has a particular version of this problem. When a tool turns a website into a standalone Mac app, the icon usually starts as the site's favicon. A favicon is drawn to be legible in a browser tab, so it tends toward one letter or one mark on a flat square. Six of them side by side look alike, and three may share the same blue.

Get Info works on these apps too, and the same limits apply. If the tool rebuilds or replaces the app, the pasted picture can go with the old copy.

The more durable route is to set the icon in the tool that made the app, so the icon is part of the build rather than a picture attached afterward. Some site to app tools do this well. One documents in its Guide that an app's icon can be changed at any time by dragging in a new image, that square images automatically receive the rounded macOS corner shape, and that the change takes effect the next time the app is launched. Its Features page adds that prepared entries for common services come with an official icon already chosen, and that the favicon can be fetched automatically for any other site. The list of supported services shows which sites come prepared.

Approach	Effort per app	After the app is replaced	Corners match native icons
Keep the site's favicon	None	Unchanged	Rarely
Paste an image with Get Info	About a minute	Can be lost	Only if the image was rounded first
Set the icon in the tool that built the app	About a minute, once	Kept	Yes, when the tool applies the mask

Position and names do more than the picture

The cheapest fix is free and works at once. People find an icon by position before they find it by appearance. An app that always sits in the same place in the Dock gets clicked correctly even with an ordinary picture, because the hand goes to the place. Apple's Dock guide covers it: drag an item to a new location to rearrange it, drag it out until Remove appears to take it off, and Control-click a running app and choose Options > Keep in Dock to pin it.

Names deserve the same attention. Spotlight and the app switcher are partly text, and two apps called Calendar cannot be told apart there whatever their icons look like. Names such as Calendar Work and Calendar Home fix a problem that no picture can reach.

Grouping helps too. Put the apps used together next to each other, keep the order stable, and leave the most used one at an end of the row, where it is easiest to hit.

Between a clear name, a fixed position, and a distinct color, the picture is the smallest of the three. It is still worth getting right, but it is not where to start.

What to change first

First check System Settings > Appearance and set Icon & widget style back to Default if color has disappeared from the Dock. Then fix the order of the Dock and rename any apps that share a name. After that, replace only the icons that are still confusable: use Get Info for apps you installed yourself, and for websites turned into apps, set the icon in the tool that builds them, such as Kagemusha, so the picture stays when the app is updated.