Tools

Free AI prompt tools

A complete, free toolkit for writing, testing and improving AI prompts. Every tool runs in your browser, needs no account, and works with any AI model. Pick one and start in seconds.

Prompt Optimizer

Turn a plain request into a clear, structured prompt any AI can follow.

Prompt Analyzer

Score any prompt and get specific, actionable fixes.

Image Prompt Generator

Build detailed prompts for Midjourney, DALL·E and Stable Diffusion.

Prompt Templates Library

Copy-ready prompt templates for work, study and creative projects.

System Prompt Generator

Design the system prompt behind a custom assistant, GPT or agent.

Rewrite Prompt Generator

Get a precise prompt to rewrite any text in the tone you want.

Reasoning Prompt Builder

Wrap any problem in a reasoning scaffold for more reliable answers.

JSON Prompt Builder

Force clean, structured JSON output with a schema the AI must follow.

Token Counter & Cost Estimator

Estimate tokens and API cost for your text across popular models.

Negative Prompt Generator

List what to exclude and get a clean negative prompt for image models.

FAQ

Frequently asked questions

Are all the tools free?

Yes, all ten tools are completely free with no account and no limits on how often you use them.

Which tool should I start with?

If you are new, start with the Prompt Optimizer — it turns any plain request into a structured prompt. If you already have a prompt, run it through the Prompt Analyzer to see what to improve.

Do the tools store what I type?

No. Everything runs locally in your browser and nothing is uploaded or saved on a server.

Can I use these tools on my phone?

Yes. Every tool is fully responsive and works on phones, tablets and desktops.

Write your next prompt in seconds

Turn a rough idea into a clear, structured prompt any AI can follow. Free, private, and no account needed.

Open the Prompt Optimizer See all tools