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Preset Prompt Library

Prompt Generator & Enhancer

Live Prompt Preview


      

        
0 chars · 0 words · ~0 tokens

        

          
          
        

      

    

  


  

    
Saved Prompts (stored only in this browser)

    

  


  

    

      
What is prompt engineering?

      
Prompt engineering is the skill of writing clear, structured instructions that guide AI models like ChatGPT, Claude, Gemini and Midjourney toward accurate, useful results. EZPromptBuilder is a free AI prompt generator that turns a rough idea into a professional prompt using proven frameworks, entirely inside your browser.

    

    

      
EZPromptBuilder Features

      
    
        
  • Text AI prompts for ChatGPT, Claude, Gemini and Llama using Role, Context, Task, Constraints and Format.
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  • Image AI prompts for Midjourney, DALL-E 3 and Stable Diffusion with aspect ratio, style, lighting, lens and negative prompts.
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  • Coding AI prompts with language, framework, code style, error handling and unit tests.
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  • Auto-Enhance restructures raw ideas into professional prompts.
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  • Preset library, token estimator and saved prompts stored locally.
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  • Free and private: 100% client-side, no signup, no API key.
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How it works

      

        
1. Pick an engine
Choose Text, Image or Coding mode to get the right prompt architecture.

        
2. Describe your idea
Fill in role, task, context and constraints, or load a preset template.

        
3. Enhance & copy
Hit Auto-Enhance, review the live preview and copy it into your AI tool.

      

    

    

      
Frequently Asked Questions

      

        
What is EZPromptBuilder?
EZPromptBuilder is a free, 100% client-side AI prompt generator and enhancer for ChatGPT, Claude, Gemini, Midjourney and coding assistants.

        
How to write better prompts for ChatGPT and Claude?
Give the model a role, add background context, state one clear task, list constraints (length, tone, audience) and specify the output format. Examples and a request to ask clarifying questions improve results further.

        
How to generate Midjourney image prompts?
Start with the subject, then add art style, lighting, camera lens and render engine. End with parameters like --ar 16:9 and --no for negative prompts. The Image AIs tab builds this for you.

        
Is EZPromptBuilder free and private?
Yes. It needs no account or API key, and everything runs locally. Saved prompts live in your browser's localStorage only.

        
How are tokens estimated?
We use roughly four characters per token for English. Exact counts differ slightly between GPT, Claude and Gemini tokenizers.