Do live wallpapers drain your battery?
The honest answer: yes, a little — but usually less than people fear. A live wallpaper has to decode and draw video frames continuously, so it uses more power than a static image. But on a modern laptop a well-built live wallpaper is a minor draw compared with the things that really move your battery: screen brightness, the CPU work of your actual apps, and the browser.
What actually affects the power use
- Resolution and frame rate — a 4K 60fps loop costs more than a 1080p 30fps one.
- How it's encoded — an efficiently compressed, hardware-decoded video sips power; an inefficient one doesn't.
- Real-time engine vs pre-rendered loop — apps that render interactive scenes live (e.g. particle/audio-reactive engines) use more than apps that simply play a finished loop.
- Whether it pauses when covered — good apps stop drawing when a window covers the desktop or when you're on battery, which cuts the cost to near zero.
So how much battery does it actually use?
For a typical efficient 1080p loop, you're usually looking at a small single-digit percentage of extra drain — noticeable over a full day, but not the thing that ends your battery early. If you're trying to squeeze out every minute on a long flight, a static wallpaper is always the lightest choice. The rest of the time, the difference is modest.
How to keep the impact small
- Use a wallpaper at your screen's resolution, not above it.
- Prefer apps that pause playback when the desktop is covered or when unplugged.
- Choose pre-rendered loops over heavy real-time engines.
How Formosus approaches this
Formosus is deliberately built to be lightweight: it plays a pre-rendered, efficiently encoded loop rather than running a heavy real-time engine in the background. The goal is a beautiful moving desktop that sits quietly out of the way — a live wallpaper, not a resource hog. As with any animated wallpaper, you'll use a little more power than a still image, but it's designed to keep that to a minimum.
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