Free prompt tools
Every tool here runs in the open: no card, scoring that gives the same answer every time and needs no account, and rewriting that takes a free one. Start with whichever matches the problem you have right now.
Write and improve prompts
Free Prompt Optimizer
Paste a rough prompt and get a clear, structured version written for the AI model you use. Free with an account.
Prompt Enhancer
Enhance a prompt by adding the context, audience and constraints it is missing — with questions when the detail only you know.
Prompt Improver
Improve a prompt that gives disappointing answers. See what is weak, what changed and why the new version scores higher.
Free Prompt Analyzer
Analyze any prompt across seven dimensions — clarity, context, specificity, constraints, output format, examples and model fit.
Prompt Checker
Check a prompt for the things that are usually missing: audience, constraints, output format and examples. Instant and free.
Prompt Grader
Grade a prompt out of 100 with a breakdown across seven dimensions and a clear band — weak, fair, good or excellent.
Free Prompt Generator
Describe the job in a sentence and get a complete prompt back, structured for the AI tool you use. Free with an account.
Optimize for a specific model
The same prompt is structured differently for each tool — Markdown sections for ChatGPT, tagged sections for Claude, short labelled blocks for Gemini.
ChatGPT Prompt Optimizer
Rewrite any prompt into the Markdown-sectioned structure ChatGPT follows best. Free with an account.
Claude Prompt Optimizer
Rewrite any prompt into the XML-tagged structure Claude follows best, with room for long context. Free with an account.
Gemini Prompt Optimizer
Rewrite any prompt into the clearly labelled structure Gemini follows best. Free with an account.
ChatGPT Prompt Generator
Turn a one-line goal into a full ChatGPT prompt, with the sections it follows and the details you forgot to mention. Free.
Claude Prompt Generator
Describe a task and get a Claude prompt with a labelled slot waiting for the document you will paste. Free with an account.
Gemini Prompt Generator
Pick the shape you want the answer in — table, steps, JSON — and get a Gemini prompt built to return it. Free to use.
Midjourney Prompt Generator
Describe a picture in plain words and get a Midjourney prompt: subject, lighting, lens and style, with aspect ratio flags.