Create Your Own Animated Codex Pet
Create a custom animated Codex pet from any photo. Download an installable kit with 9 states, 72 frames, spritesheet, pet.json, and setup notes.
Frequently asked questions
What is a Codex pet?
A Codex pet is a small animated companion that appears inside Codex while you work. Custom pet kits use pet.json and spritesheet.webp to define the pet and its motion states.
Is this official?
No. Codex Pet Kit is an independent compatibility tool and is not affiliated with, endorsed by, sponsored by, or officially connected to OpenAI.
What can I upload?
PNG, JPG, or WEBP images work best, including avatars, founder photos, pets, mascots, and clear character references.
What kind of image works best?
Use a clear front-facing image with one main subject, good lighting, and a simple pose.
Will the pet be perfect?
AI-generated pets may have small imperfections in motion details, edges, clothing, or small accessories.
How long does generation take?
A complete 9-state pet usually takes about 10 to 15 minutes.