Windows · 6 min · Upstream checked July 17, 2026

Can you change the Codex background on Windows?

Understand the current Windows limitation and what a website wallpaper export can—and cannot—do today.

Platform behavior can change. Compare this guide with the original repository at commit 26c6c410e0e0.
01Check the current Windows upstream guide
02Separate bundled skin support from arbitrary images
03Export data without assuming compatibility
04Retest after upstream changes

Current upstream support is not platform-parity

The Windows workflow documents a bundled decorative skin installed and launched through PowerShell. It does not currently document a macOS-equivalent command that accepts any wallpaper plus three colors. A wallpaper downloaded here is a design asset, not evidence that the Windows injector will consume it.

What you can use safely now

You can use the Builder to evaluate crop, palette, and readability, then keep the wallpaper and v2 recipe as portable data. If you run the upstream Windows skin, follow its own install, start, verify, and restore scripts. Never copy the macOS shell command into PowerShell or edit files inside WindowsApps.

How to recognize real future support

Look for an explicit upstream Windows parameter or documented theme-pack schema, tests that validate the imported image, and a restore path that removes only the matching injected state. Until those exist on the checked main commit, treat arbitrary-image Windows support as unverified.

Do not use third-party ZIPs that promise image support by patching WindowsApps, app.asar, or the official signature.

Completion checklist

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