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Prompt Maker Studio

Free prompt tools

Small tools for writing, checking and reusing AI prompts. They need no account, and the browser-based ones never upload what you type.

  • Prompt template filler

    Paste a prompt with {{variables}}, fill in a field for each one and copy the finished prompt. Runs in your browser; nothing is uploaded.

  • Prompt checker

    Check a prompt for a missing role, output format, length or example, and for broken tags and variables. Runs in your browser; nothing is uploaded.

  • Prompt refiner

    Paste a prompt and get a clearer, more specific version, with optional questions about what you need. Free to try without an account, within daily limits, where this site offers it.

  • Prompt diff

    Compare two versions of a prompt word by word to see exactly what changed. Runs in your browser; nothing is uploaded.

  • Prompt token counter

    Estimate how many tokens a prompt uses and what it costs across current OpenAI, Anthropic and Gemini models. Runs in your browser; nothing is uploaded.