Puter.js Image API Limitations: Why Developers Are Switching to NexaAPI

Puter.js looks like the perfect free image API. No API key, no credit card, FLUX + DALL-E + Stable Diffusion for free. I was excited. Then I tried to use it in my Python backend. It doesn't work. Puter.js is browser-only. No Python support. No Node.js server support. No CLI. No serverless functions. Here's the honest breakdown — and what to use instead. What Puter.js Actually Is Puter.js is a JavaScript library that runs in the browser. It authenticates through the Puter.com platform using browser sessions. That's why it's "free" — you're using their browser-based auth system. This is great for demos. It's a dead end for production. The 6 Limitations Nobody Mentions No Python — Can't use it in Django, Flask, FastAPI, Jupyter, or any Python environment No Node.js server — Doesn't work in Express, Next.js API routes, or serverless functions No real API key — No programmatic auth, no CI/CD integration No SLA — Free service, no uptime guarantee, no support Images only — No video, no audio,