vust

Prompt Optimizer

Turn rough prompts into sharper AI instructions.

Paste a vague request, get a cleaner copy-ready prompt, and keep a clear success state when your prompt is already strong enough.

AI-powered. Free. 10/day.Powered by Claude Sonnet
0/ 4,00010/10 free
Already-good verdictCopy-ready outputSharper instructions

See the difference

A small rewrite turns a vague prompt into a precise instruction.

Email

Before

write an apology email to a client

After

You are a customer success manager. Write a concise apology email to a B2B client whose shipment was delayed by 5 days. Professional but warm tone. Include a concrete next step.

Adds role, narrows the task, sets tone and output expectations.

Code Review

Before

review my react component

After

Review this React component for performance issues, accessibility gaps, and prop-type correctness. List each finding as a bullet with severity (critical/minor) and a suggested fix.

Specifies review criteria, defines output format, adds severity ranking.

Studying

Before

explain photosynthesis simply

After

Explain photosynthesis to a 14-year-old preparing for a biology exam. Use one clear analogy, then summarize light and dark reactions in two paragraphs. End with three quiz questions.

Defines audience, constrains format, adds a self-test output.

How to use it

01

Paste a rough prompt, question, or task description.

02

Run one check to get either an improved version or an explicit already-good verdict.

03

Copy the result into ChatGPT, Claude, or your own workflow.

Frequently asked questions

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History, extended limits, and more in the dashboard

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