Turn any image into a complete Codex theme.
Attach an image you own—or describe a visual and let Codex create it with your OpenAI account. The open-source GptSkin Skill translates the finished image into a complete, locally applied theme for the Codex desktop app.
No CSS editing. No Codex files modified. Reversible in one command.
Try a theme — live preview
Three steps. Ninety seconds.
From a plain Codex window to a workspace that feels like yours.
Install the Skill
One command adds the open-source GptSkin skill to Codex. Free presets work instantly — no account, no setup.
Prepare an image
Create a visual in Codex with your own OpenAI account, or attach any image you own. GptSkin compiles the theme from the finished image.
Applied to Codex
The Skill applies the theme locally over a loopback-only connection. Restore the default look anytime with one command.
Theme Gallery
Start with a free preset, or explore custom themes created by the community.
Custom image themes cost 20 Credits. Reapplying a saved theme is free.
Free Presets
No account needed
FREEAurora Borealis
Northern lights over arctic snow — aurora green on polar night. A luminous mint accent glows against deep forest green and near-black, keeping long sessions easy on the eyes. Made for late-night coding when you want calm focus with a touch of arctic wonder.
FREESnow Peak
Moonlit snow mountains — ice blue accents on deep slate. Cool, quiet tones keep contrast crisp without any glare. A good fit for focused daytime work and anyone who prefers a cold, minimal palette.
FREECity Lights
Night skyline from above — warm amber on midnight blue. The golden accent reads like windows lit after dark, set against deep navy shadows. Great for evening coding sessions when you want warmth without brightness.
FREEDark Void
Milky way over the void — violet accents on deep space. Soft purple highlights float on a near-black backdrop for a cinematic, low-distraction feel. Ideal for late-night deep work and fans of true dark themes.
FREESunset Glow
Golden hour over the sea — warm ember on twilight. Orange and pink accents bring dusk warmth to a dark base. Suits creative work and anyone who wants their editor to feel like the end of a good day.
FREEMinimal Light
White dunes under a bright sky — airy blue on white. A clean light theme with calm blue accents and plenty of breathing room. Best for bright rooms, daytime work, and anyone who prefers a crisp, distraction-free editor.
Beautiful outside. Boring inside.
The injection mechanism is deliberately unsexy: open, local-only, and reversible.
Open-source Skill
Every line of the skill and injector is public on GitHub. Audit it before you run it.
Local-only injection
CDP binds to 127.0.0.1 only. The Skill disconnects after injection; the port closes when that Codex process exits.
Official app untouched
No modified binaries, no patched asar, no changed signatures, API keys, or base URLs. Ever.
One-command restore
Say "restore the default Codex theme" and every trace of injection is removed. Codex restarts clean.
macOS + Windows
Both platforms supported from day one, with the same apply, pause, diagnose, and restore lifecycle.
Secure checkout by Creem
Payments, taxes, and refunds are handled by Creem as Merchant of Record. We never see your card.
Built for people who live in Codex
Eight hours a day deserves a workspace that isn't default gray.
Builders
Independent developers who spend all day in Codex and want a workspace that matches their visual style.
Creators
Streamers and tutorial makers who need a recognizable screen. Your theme becomes part of your brand.
Teams & brands
Use your brand artwork and palette as the source image for a consistent Codex workspace.
Start free. Pay once.
Free presets forever, no account needed. Sign up and verify your email for 20 Credits—enough for one custom image theme. One-time packs, never a subscription.
Starter — $9.9
100 Credits. Perfect for trying custom themes with your own images.
Pro — $19.9 · Most Popular
500 Credits. For creators who switch themes often.
Studio — $49
1,500 Credits. For heavy users and small teams.
Frequently asked questions
More questions? Read the docs or email support@gptskin.best.
Turn your next image into a Codex theme.
Install the Skill, try a free preset, or build a custom theme from your own image.