There are three ways to get animated falling snow on a Mac: a moving wallpaper, a snow screensaver or a desktop overlay app. A wallpaper replaces your background, and a screensaver only runs while the Mac is idle. Only an overlay keeps snow falling over your own wallpaper while you work.
Search for an “animated snow desktop background” and you will find all three mixed together. They look similar in a preview, but they behave very differently once you sit down to work. This guide explains what each option does, where it falls short and how to pick the one that fits your day.
Option 1: a moving snow wallpaper
A wallpaper is the picture behind your windows and desktop icons. The moving wallpapers built into macOS are Apple’s own aerial videos, so a snowy video background usually needs a third-party wallpaper app that plays a video file in its place.
This works if you want the whole background to be a winter scene. The trade-off is that the snow is part of the picture: you give up your own wallpaper for as long as the video plays, and the snow disappears as soon as a window covers the desktop.
Option 2: a snow screensaver
A screensaver starts when your Mac has been idle for a while and stops the moment you touch the keyboard or trackpad. A snowfall screensaver can look lovely on a Mac you are not using, for example on a desk in the evening.
It does nothing while you work, though, which is when most people want a little winter atmosphere. If you download a screensaver file from the web, use a source you trust: it is software that runs on your Mac.
Option 3: a desktop overlay
An overlay app draws a separate, transparent layer of animation on top of everything else. Your wallpaper stays exactly as it is, and the snow falls in front of it. Clicks pass through the layer, so you can still use your apps, documents and desktop icons.
Wonderfall is an overlay app. You can keep the snow behind your windows, so it only shows on the desktop, or let it fall over open windows. It can fill the whole screen or stay in a narrow strip along the top, near the menu bar.
Moving wallpaper, screensaver or overlay: side by side
| Moving wallpaper | Screensaver | Desktop overlay | |
|---|---|---|---|
| Visible while you work | Only where the desktop shows | No | Yes |
| Keeps your own wallpaper | No | Yes | Yes |
| Can appear over open windows | No | No | Yes, if you choose it |
| Lets you click through | Yes | Stops on any input | Yes |
| Best for | A full winter scene | An idle Mac | Snow while you use your Mac |
How to set up falling snow over your wallpaper
- Install Wonderfall from the Mac App Store. It needs macOS 14.6 or later.
- Open the menu bar icon and turn on Snow.
- Choose where it falls. Desktop only keeps the snow behind your windows. Switch it to fall over your open windows if you want it in front.
- Tune it. Lower the intensity and size for a calm background, raise them for a proper snowstorm. Speed and wind change how the flakes move.
For every setting in detail, read how to add snow to your Mac desktop.
Common questions
Does a snow overlay replace my wallpaper?
No. The overlay is a separate transparent layer. Your wallpaper, desktop icons and windows stay where they are.
Will the snow get in the way of my clicks?
No. Wonderfall’s overlay ignores mouse clicks, so everything underneath keeps working.
Can I use my own pictures instead of snowflakes?
Yes. Wonderfall can animate your own images in place of the built-in flakes, which works well for a gingerbread, star or logo snowfall.
Does it work with more than one display?
Yes. The effect appears across your connected displays.
