Engineering-grade prompt structure optimization. Not writing tips. Understand how token distribution, generation constraints, and output structure affect model behavior.
Enter your original prompt (up to 5,000 characters). No login required. Just paste and go.
AI analyzes prompt structure, generates score, diagnosis, and optimized versions in both languages.
View your score, read the diagnosis, copy optimized versions, and understand why each change works.
Get HeyPrompt from Chrome Web Store. One click install, instant activation.
Select text on any webpage, right-click, choose "Optimize this prompt". Works everywhere.
Optimized prompt auto-copies and fills into your AI platform's input box. Ready to send.
Click extension icon to browse history and collections. Export/import for backup.
0-10 scale with one decimal precision. Evaluates specificity, context completeness, and instruction clarity. Includes witty but encouraging feedback.
Identifies structural issues in your prompts. Analyzes task clarity, role activation, and constraint conditions at the mechanical level.
Generates both Chinese and English optimized versions. Recognizes how different languages affect model behavior differently.
Detailed explanations for every modification. Understand how changes affect the model's generation space. Learn to optimize, not just copy.
Right-click to optimize selected text. Auto-fill across 12+ AI platforms. Local history (50 entries) + collections (50 entries) with export/import.
Auto-detects browser language. One-click toggle between Chinese and English. Seamless experience for global users.