Hi everyone,
I want to share a project I’ve been building with GPT-5.3 Codex.
DogSprite is a pixel art editor that runs entirely in the browser and works fully offline after the first load.
What makes this project special is that approximately 90% of the code was generated with GPT-5.3 Codex. I used Codex as a development partner to design the architecture, implement the drawing tools, and refine the interface.
Goals of the project:
• Create a fast, offline-first pixel editor for indie developers
• Demonstrate how powerful software can be built with AI-assisted development
• Deliver a lightweight and accessible creative tool
Main features:
• Works 100% offline after loading
• No installation required
• Fast and lightweight
• Built for game developers
• Runs entirely in the browser
GPT-5.3 Codex was used to generate most of the code, but the editor itself does not require any AI or internet connection to function.
I’d love to hear your feedback.
Thanks to the OpenAI team for making tools like Codex possible.