Transform Your Prompts
Into Structured JSON
Convert natural language prompts into well-organized JSON structures. Visualize concepts and relationships with interactive graphs.
How It Works
JSON Structured
Convert natural prompts into well-organized JSON format
AI Powered
Leverages Gemini AI for intelligent prompt analysis
Visual Graph
See your prompt structure as an interactive D3 visualization
Three Simple Steps
Enter Your Prompt
Type or paste any natural language prompt you want to structure
Choose Complexity
Select how detailed you want the JSON structure to be (1-7)
Get Results
View, copy, or download your structured JSON prompt
Bring Your Own API Key
Get unlimited conversions by using your own Gemini API key. It's free to get and gives you full control.
1Get Your Free Key
Visit Google AI Studio and create a free Gemini API key in seconds.
2Add to Settings
Go to and paste your API key. It's stored locally and never sent to our servers.
Your API key stays in your browser Unlimited conversions No daily limits
Ready to Transform Your Prompts?
Start converting your natural language prompts into structured JSON today.
Frequently Asked Questions
What is Y7-Jprompter?
Y7-Jprompter is a free tool that converts natural language prompts into structured JSON format. This helps you create more effective prompts for AI systems by organizing your instructions clearly.
Is it really free to use?
Yes! You get 100 free conversions per day. For unlimited usage, you can add your own free Gemini API key from Google AI Studio.
Is my API key safe?
Absolutely. Your API key is stored only in your browser's local storage and is sent directly to Google's API. We never store or have access to your key on our servers.
What are complexity levels?
Complexity levels (1-7) control how detailed the JSON output will be. Level 1 gives you a simple structure, while level 7 provides the most comprehensive breakdown with all available fields.
What is Context Injection?
Context Injection (available at complexity 3+) lets you add project-specific context like your tech stack, coding style, or domain knowledge. This helps generate more tailored prompt structures.
Can I save my converted prompts?
Yes! All your conversions are automatically saved to History. You can also save favorites to your Prompt Library for quick access later.