Free 3-day trial — all models unlocked
World's first live reverse-engineering system
Welcome to Nano Spark Designer.
Hover any image on any page, then click Extract Prompt — it analyzes the image and builds a production-ready prompt you can refine in the chat editor.
Analysis depth
Recommended video models
Models that analyze video best — click to add to your account
For best results and 100% accuracy, use premium APIs (Gemini 1.5 Pro, GPT-4o, Claude). Free models work, but premium APIs yield the best results.
Nano Lite — fast & concise prompt (max 1,000 chars).
Video reverse engineering
Coming soon — we are working on it. Image extraction is fully live; video will arrive with the next update.
See plans
One-time plans — pay once, unlock forever
See plans & pricing →
Settings
API accounts
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Quick providers:
Setup Agent
10/10Your keys never leave this device — the agent sees only account labels, hosts and model names. Free accounts get 10 agent messages per day; Pro / Ultra / MAX are unlimited.
Updates
Model updates and version history
What changed in each version, from the first release to now.