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Prompt Quality Checker

AI prompts & workflows · Done in 3 steps

Stays on your deviceFree · No sign-up
  1. 1Paste your prompt
  2. 2
  3. 3
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About

Paste a prompt and get an instant heuristic score with specific fixes: missing task, context, audience, format, length, examples, vague words and placeholders.

How to use it

  1. 1Paste the prompt you're about to send to an AI.
  2. 2Read the score and the checks that failed, highest-impact first.
  3. 3Fix the suggestions — vague words and unfilled placeholders are listed for you.
  4. 4Re-check until the important items pass, then test it on a real model.
You give
Any prompt text.
You get
A 0–100 heuristic score, pass/fail on 14 checks with suggestions, vague words, token estimate and extra tips.
Good to know
Rule-based pattern matching in your browser — it doesn't use AI or understand meaning, so a clever prompt can score low and a padded one high. Tuned for English prompts. Token count is a rough estimate (characters ÷ 4).
Privacy
Processed on your device. Nothing is uploaded, stored or logged.
Last tested
2026-10-28

FAQ

How is the score calculated?

Each of 14 checks (clear task, context, goal, audience, output format, length limit, constraints, examples, role, tone, handling uncertainty, precise wording, no unfilled placeholders, enough detail) has a weight. The score is the share of weight your prompt passes. It's a checklist, not a verdict.

Does a high score guarantee a good answer?

No. It means your prompt contains the ingredients that usually help. The only real test is running it and checking the output.

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