AI Prompt Improver – Rule-Based Suggestions
Get rule-based suggestions to make your prompt clearer: avoid vague words, add context, one task per prompt. No AI call—logic runs in your browser.
Your prompt
Prompt quality score
Enter a prompt above to see your score and suggestions.
Analysis & suggestions
Suggestions appear here after you enter a prompt.
Use this as a template. It does not rewrite your text—fill in the placeholders with your content.
You are a {{role}}.
Task: {{task}}.
Context: {{context}}.
Constraints: {{constraints}}.
Output format: {{output_format}}.Free AI Prompt Analyzer — Browser Based, No API Required
This prompt analyzer runs entirely in your browser. No account, no API key, no data sent to any server. You get instant structure and clarity feedback, action buttons to insert missing sections, and a before/after comparison—all without leaving your device. Ideal for improving ChatGPT prompt quality, prompt engineering tips, and building reusable prompts with our Prompt Template Builder.
How to improve ChatGPT prompts
Start with a clear role (e.g. "You are an expert in…"), state the task in one sentence, add context the model needs, and specify the output format (bullets, table, length). Use this free prompt optimizer to check for missing elements and vague language. Improve ChatGPT prompt quality by avoiding "something," "maybe," and "etc."—replace them with concrete terms. Pair this tool with our Prompt Formatter or Prompt Template Builder for best results.
Common prompt mistakes
- No role or persona—the model doesn't know the lens to use.
- Multiple tasks in one prompt (e.g. "Write a summary and generate questions and create an outline") — split into separate prompts.
- Vague or ambiguous words ("something good," "maybe," "etc.") — use specific, actionable language.
- Missing output format—specify bullets, table, JSON, or paragraph so the response is consistent.
- No constraints—add length limits, tone, or "don't" rules when they matter.
Prompt engineering checklist
- Role: Define who the AI should act as (expert, assistant, persona).
- Task: One clear instruction or goal per prompt.
- Context: Background, topic, or scope the model needs.
- Output format: Bullet points, table, JSON, word count, or structure.
- Constraints: Length, tone, things to avoid.
- Audience: Who the output is for (optional but helpful).
Why structured prompts work
Structured prompts give the model clear sections—role, task, context, format—which reduces ambiguity and improves consistency. A prompt clarity checker like this one helps you spot missing elements and vague phrasing before you send. No API or account is required; the analyzer runs entirely in your browser for privacy. Use our prompt improvement tool regularly to build better habits and compare prompts over time with the Prompt Comparison tool.
Examples of better prompts
Weak: "Write something about productivity." Strong: "You are a productivity coach. Task: Write a 200-word blog intro on time blocking for busy professionals. Tone: Encouraging and actionable. Output: One short paragraph, no bullet points." The second prompt has role, task, context (audience), tone, length, and format—so the AI can deliver a precise result. Use this AI prompt analyzer free in your browser to score and improve your own prompts.
Frequently Asked Questions
How does the Prompt Improver work?
The Prompt Improver uses rule-based heuristics to analyze your prompt. It checks for structure (role, task, context, output format), specificity (numbers, clear verbs), clarity (single task, no ambiguity), and length. No AI APIs are used—everything runs in your browser for full privacy.
Is my prompt sent to any server?
No. This tool is 100% client-side. Your prompt is never sent to our servers or any third party. All analysis runs locally in your browser. No data is stored.
What's the difference between Prompt Improver and Prompt Template Builder?
The Prompt Improver analyzes a single prompt and gives clarity and structure suggestions. The Prompt Template Builder lets you create reusable templates with {{placeholders}} and fill them in. Use the Improver to refine a prompt, then the Template Builder to turn it into a reusable template.
Is this as good as AI prompt optimizers?
This tool doesn't rewrite your text with AI—it analyzes structure and clarity using rules. That makes it predictable, private, and free. For structure and missing-elements analysis, it's competitive; for full rewrites, you'd use an AI service. Many users prefer rule-based analysis for control and privacy.
Why no AI rewrite?
We focus on structure and clarity checks so your content stays yours. No AI rewrite means no data sent to third parties, no drift from your intent, and full transparency: you see exactly which rules triggered each suggestion. You can then edit manually or use another tool for rewriting.
Is browser-only better for privacy?
Yes. When analysis runs entirely in your browser, your prompt never leaves your device. There's no server to log or misuse your text. Browser-only tools are ideal for sensitive or proprietary prompts and for users who want zero data sharing.
Part of AI Tools
Related AI tools
Explore these related free tools to enhance your productivity and workflow.
AI Prompt Formatter
Clean messy prompts into a structured format. Format AI prompts for clarity. Free, no signup.
Readability & Style Analyzer
Get Flesch Reading Ease, Flesch-Kincaid grade level, words per sentence, syllables, reading time. Improve clarity.
Prompt Comparison Tool
Compare two prompts side-by-side. Prompt diff and A/B comparison. Free, runs in browser.