GPT Skin

GPT Skin is a free, no-account browser generator for custom ChatGPT, Codex and Claude workspace skins. You pick colours, fonts and accent styles with live controls and see the result immediately in a preview that mirrors the real chat interface, then the tool builds an installable macOS theme ZIP entirely on your machine. Installation is a single click and restoring the default theme takes one click as well. Because everything runs locally and nothing is uploaded, no account, sign-up or API key is needed. The generator includes a verification step that checks the produced ZIP so broken themes do not reach your desktop, and it ships with sensible defaults so you can restyle a workspace in under a minute. It works on desktop and mobile browsers, costs nothing, and supports themes for ChatGPT, Codex and Claude sidebars and chat panes. Bring your own palette, keep your files private, and change the look of your AI workspace whenever you like without touching a single config file.