Quick Answer: Animated wallpapers for Windows are safe when you get them from a source you can verify, such as a GitHub Releases page or an established app like Lively Wallpaper. Check the download link, compare the file's SHA-256 hash, and scan the installer before running it. The Windows Animated Wallpapers project shows why: its README sends you to a third-party page for the download.
Here's a download button that should make you pause. The Windows Animated Wallpapers README promises smooth 60 FPS live backgrounds, low CPU use, 4K support, and a portable .exe that "requires no installation." Those are appealing claims for anyone who wants motion on their desktop. But the first click leads somewhere you didn't expect, and that's the part most visitors skip.
What the README promises (and what it doesn't prove)
The project describes itself as a curated set of animated wallpapers for Windows 10 and 11, with a feature table covering performance mode, pause-on-fullscreen, startup behavior, and optional audio reactivity. Nothing in the README includes a benchmark, a test environment, or a link to measurements. "60 FPS with zero stuttering" is a claim, not a result.
That doesn't make the project malicious. It does mean you can't judge it from the README alone. A wallpaper app has to be trusted with an executable that runs under your user account, and that's a higher bar than a screensaver.
The download button is the real risk
The README's "Download Project" button links to telegra.ph, a free publishing service where anyone can create a page and change its contents at any time. A GitHub project that hosts its code on GitHub would normally link to its Releases page or a direct archive on GitHub. Routing the download through an unrelated domain adds a layer you can't inspect, and the destination can change after you've read the README.
Here's the cause-and-effect chain. When you run an unsigned installer, it executes with your permissions. It can read your documents, touch your browser profiles, or start background processes that survive a reboot if the code does that. You won't see any of this from the wallpaper itself, which is why the failure mode is easy to miss. The animation plays, the desktop looks fine, and the problem is somewhere else.
This next part matters more than it looks. Don't treat the telegra.ph link as proof of bad intent, and don't treat it as proof of safety either. Treat it as a reason to verify before you run anything.
Why "open source" doesn't mean "safe to run"
Here's the counter-intuitive point most guides skip: open source describes the code, not the binary you actually execute. The WallpaperSetup.exe you download is compiled from source by someone, on some machine, with some toolchain. Unless you build it yourself or the project publishes reproducible builds, you can't confirm the executable matches the repository.
Most people assume that reading the code is enough. For a small Windows project, few users read it, and fewer compile it. Open source gives you the option to verify, but only if you use it. The MIT license in the README grants freedom to modify and redistribute; it says nothing about whether the uploaded .exe is clean.
That said, the reverse is also true. Closed-source apps aren't automatically safer. The point is verification, not brand trust.
How to check an installer before you run it
Work through these steps in order. Each one is cheap, and together they catch most problems.
- Find the official release. Check the repository's Releases tab. If the only download is a third-party link, stop and ask why.
- Compute the SHA-256 hash. Open PowerShell or Command Prompt in the folder and run
certutil -hashfile WallpaperSetup.exe SHA256. Compare the output with a published hash. If the project publishes none, that's a weak signal worth noting. - Upload to VirusTotal. The VirusTotal service runs a file against dozens of antivirus engines. A clean result is not a guarantee, but many detections are a clear stop sign.
- Check the digital signature. In PowerShell, run
Get-AuthenticodeSignature .\WallpaperSetup.exe. A valid signature from a known publisher is a stronger trust signal than a README. - Test in Windows Sandbox. On Windows 10 Pro or Windows 11 Pro, the built-in Windows Sandbox runs apps in a disposable virtual machine. Your real files and browser data stay out of reach.
Expect Microsoft SmartScreen to flag an unsigned installer. A SmartScreen warning doesn't prove the file is dangerous, but it does mean Windows can't verify the publisher. Don't click past it because the wallpaper looks nice.
Comparing options before you install
If verification feels like too much effort for a wallpaper, consider established alternatives with clearer distribution paths.
| Option | Where it's distributed | Cost | Verification path |
|---|---|---|---|
| Windows Animated Wallpapers (this repo) | GitHub README linking to telegra.ph | Free (MIT per README) | Manual: hash, scan, sandbox |
| Lively Wallpaper | GitHub and Microsoft Store | Free | Store signing plus open-source code on GitHub |
| Wallpaper Engine | Steam | Paid | Steam distribution and account-based purchase |
Lively Wallpaper is the closest open-source alternative. It's free, has a long public history on GitHub, and is available through the Microsoft Store, which means Microsoft handles distribution and review. Wallpaper Engine is a paid Steam app with a large catalog and a support channel, which suits people who want a polished experience and don't mind paying.
The trade-off is simple. Store and Steam distribution gives you a trusted delivery channel, but you accept that channel's rules and fees. A GitHub-only project gives you full visibility into the code, but only if you do the verification work yourself.
Measure the performance claims yourself
The README says these wallpapers keep CPU and GPU use low and pause when you open a fullscreen game. Those are testable claims, so test them. Here's a practical method.
Open Task Manager, go to the Details tab, and note the CPU percentage of the wallpaper process with the desktop idle for two minutes. Then open a fullscreen app and check whether the process pauses. For GPU load, the Performance tab in Task Manager shows per-engine usage on recent Windows builds.
Compare the numbers with a plain static wallpaper. A small difference is normal for any video-based background, since decoding video takes work. A large, persistent difference suggests the app isn't doing what the README says. Write down what you measured, because you'll want that baseline if you later update or switch apps.
Windows 10 support: check your version first
The README says the wallpapers support Windows 10 version 1903 and later. Microsoft ended mainstream support for Windows 10 in October 2025, so as of November 2026, an unpatched Windows 10 machine is a bigger security risk than any wallpaper. Running an unverified installer on an unsupported OS stacks two risks together.
If you're still on Windows 10, check whether you're enrolled in Extended Security Updates and consider upgrading. Don't install a new executable on a system that no longer receives routine security patches unless you've checked it carefully.
Frequently Asked Questions
What are animated wallpapers for Windows?
Animated wallpapers for Windows are desktop backgrounds that play short video loops or motion graphics behind your icons. Windows doesn't play video wallpapers natively, so you need a third-party app to run them. Lively Wallpaper and Wallpaper Engine are common choices, and both run videos like MP4 or WebM files as your background.
How do I check if a Windows wallpaper app is safe?
Download it from the official release page, compare its SHA-256 hash with any published value, and scan it on VirusTotal. Check the digital signature with Get-AuthenticodeSignature in PowerShell. For anything unsigned or from an unfamiliar link, test it in Windows Sandbox before running it on your main system.
Why does Windows say my animated wallpaper installer is unsafe?
Microsoft SmartScreen shows that warning when a file has no widely recognized digital signature or hasn't been seen often enough to build reputation. It doesn't confirm malware. It does tell you Windows can't verify who published the file, so verify it yourself before continuing.
Can I use an MP4 video as my wallpaper on Windows 10?
Not by default. Windows 10 and 11 only support static images and slideshows as built-in wallpapers. You need an app like Lively Wallpaper to loop an MP4 or WebM file behind your desktop icons, and that app should come from a source you can verify.
Is open-source software automatically safe to install?
No. Open source means the code is visible, but the compiled file you run may not match that code unless it's built reproducibly. Use hash checks and scans to confirm the binary before you trust it, and treat any unusual download link as a reason to slow down.
Before you run another wallpaper installer, do one thing first: compute its SHA-256 hash and upload it to VirusTotal. Keep the result in a note alongside your CPU measurements, so you can compare later. Pass this checklist to anyone who's about to double-click a .exe they found on a README, because the wallpaper is the least risky part of that download.