CodexSkin

Get CodexSkin

One download themes your Codex desktop app and includes all 16 skins. Works on macOS and Windows. Applies and restores in one click — nothing in the Codex app is modified.

⬇ Download CodexSkin (free · macOS + Windows)

~1.3 MB zip · includes the engine + 16 skins · no account needed

macOS

  1. Unzip the download.
  2. Open macos and double-click Apply CodexSkin.command. First time: right-click → Open → Open.
  3. Pick a skin folder from skins/.
  4. Undo anytime with Restore CodexSkin.command.

Windows

  1. Unzip the download.
  2. Open windows and double-click Apply CodexSkin.bat.
  3. Pick a skin from the numbered list.
  4. Undo with Restore CodexSkin.bat.

Don't double-click the .ps1 file — Windows opens it in Notepad instead of running it. Always use the .bat.

Requires the official Codex desktop app and Node.js 21+ (nodejs.org). On macOS the app's bundled Node is used automatically when present. Full details are in the FAQ.

Want a different look? Browse the skin gallery — every skin drops straight into the engine you just downloaded.