Chat classicQQ Glass
An original sapphire-glass take on instant-messaging nostalgia.
Codex skin gallery & builderBuild a Codex skin
Build a Codex skin
that feels like yours.
Choose a refined Codex skin and apply it in one click after a one-time local setup, or create your own skin.
Local processingYour image stays on this device.
Install onceApply from the website afterward.
Restore anytimeReturn to the official appearance.
theme.json
main ReadyLn 11, Col 1
SkinQQ GlassChat classic
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Curated Codex skins
Skins that set the tone.
Handpicked Codex skins and background ideas for every kind of focus.
Browse all skinsChat classic
Orbital viewBlue Planet
A vast blue Earth, natural cloud systems, and quiet orbital space.
Football cinemaJade Striker
Women’s football energy with a restrained ink-wash arc.
Modern ChineseCloud Palace
Pale jade peaks, cloudlight, and fine gold detail.
Basketball cinemaCobalt Court
Architectural blue hour with a burnished sunset edge.
Quietly playfulPorcelain Panda
An original ceramic panda in a calm celadon setting.
From the gallery to Codex
Choose first. Install once.
Setup should not be the first impression. Find a skin you want, then complete the one-time local step when you apply it.
Choose or create
Pick a gallery skin or preview one made from your own image.
Install once
Set up CodexSkin and the local skin engine only when you first apply.
Apply and restore
Codex reopens after confirmation, with a clear path back to the official look.
accent#5d9ac8
Local Codex skin maker
Pick the art. Check readability. Apply it.
Upload a background, choose readable colors, compare Home, Task, and Diff, then download a data-only .codexskin package that opens with CodexSkin.
- Live Codex workspace preview
- Local image processing
- Double-click .codexskin package
Guides
Browse every guide Go deeper only when you need to.
Common questions
Know enough to start with confidence.
Detailed setup, safety, and restore information now lives together in the guides.
Can CodexSkin upload my background image?+
No. Image decoding, preview, and .codexskin packaging happen in your browser. CodexSkin does not need an image-upload API.
Do I need to install anything?+
Only once. CodexSkin connects Apply to Codex buttons and .codexskin packages to the local open-source engine.
Does this modify the official Codex app?+
The upstream engine applies a local theme through loopback-only CDP and does not replace the official app bundle, app.asar, or code signature.
Can I use any image as a Codex background?+
Technically, yes, but only publish or sell a theme when you own the image or have permission to use it.
Start with the look you want
Choose one first. Make your own when you are ready.
Browse a ready-made skin or create a local .codexskin package from your own image.