CopyChecker on macOS shows pop-ups when you copy something — a convenient way to confirm the action without switching windows.
Sometimes you want extra confirmation that you’ve actually copied some text. This helps avoid switching back and forth between windows just to recopy the information.
On macOS, you can easily add such notifications using the free app CopyChecker. Once installed, it immediately starts showing pop-up alerts like these:
They don’t display the actual clipboard content, but they do show the content type (text, image, file, etc.).
In the CopyChecker settings, you can change the duration of the notification and the delay before it appears. You can also customize the style and position of the pop-up, exclude certain clip types, and even add sound alerts.
I’ve only encountered one issue while using the app: the settings window doesn’t look great when dark mode is enabled — as shown in the screenshot above.