Open Studio
A browser-based skin studio

Your Codex.
Your atmosphere.

Design a readable desktop skin, preview it live, and export the recipe locally.

Build a skin Browse themes
Portal Studio abstract workspace background
Portal Studio•••

Make this workspace calm, readable, and unmistakably mine.

C

I’ll keep the real Codex controls intact and tune the atmosphere around them.

Ask Codex to build, review or explain...↑
Local image processingData-only recipeMIT engine upstream

Tune the room,
not the controls.

Your upload stays in this browser. Nothing is sent to our server.

Portal Studio abstract workspace background
Portal Studio•••

Make this workspace calm, readable, and unmistakably mine.

C

I’ll keep the real Codex controls intact and tune the atmosphere around them.

Ask Codex to build, review or explain...↑
Current skinPortal Studio

PNG, JPEG, or WebP. Wide 16:9 artwork works best. Your file stays in this browser.

100% local processingImages are never uploaded, stored, or sent to a server. Supports PNG, JPEG, and WebP.
Text contrast17.34:1
AAA

Passes WCAG AA for normal text. Still review every preview screen.

Forest Observatory skin background
Powered by Codex Dream Skin

Open source underneath.

The upstream engine launches the official Codex app through a loopback CDP session. It injects styling at runtime and leaves the signed app bundle untouched.

Reversible local workflowYour artwork, your rightsNative controls stay interactive
Review the upstream source

Private by construction.

ChoosePick an original preset or upload your own image.
TuneAdjust the dimming, panels, blur, and colors.
ExportDownload a readable JSON recipe for local review.