MSPaintify

A Cloudflare Python Worker that turns photos into delightfully terrible MS Paint-style drawings using OpenAI's GPT-Image-2 via AI Gateway.

Built for events! Multiple events can be configured via Workers KV without code changes.

How it works

1. Upload — Take a photo on your phone via the capture page
2. Process — A durable Python Workflow sends your photo to GPT-Image-2 with a delightfully unhinged prompt
3. Display — The presenter screen shows a live slideshow of before/after pairs

Architecture

• Python Worker (src/worker.py) — FastAPI app on Pyodide/WASM handling uploads and serving static assets
• Workflow (src/workflow.py) — Durable DAG-based execution for image generation
• Frontend (assets/) — Presenter screen, mobile capture, admin gallery
• Storage — R2 for images, KV for per-event config, AI Gateway for image generation

Event Configuration

Set up a new event without deploying:

npx wrangler kv key put <event-slug> '{"title":"My Event","additionalInstructions":"Add a logo in the corner"}' --binding=CONFIG --remote

Then visit:

• Presenter: https://mspaintify.<user>.workers.dev/?event=<event-slug>
• Capture: https://mspaintify.<user>.workers.dev/capture.html?event=<event-slug>

Resources

• Python Workers Documentation
• Cloudflare Python Workers Examples
• Pyodide — Python in the browser (and in Workers!)
• Workflows Python
• AI Gateway — GPT-Image-2
• Workers KV
• Cloudflare R2