How does the prompt optimizer work?

It applies a set of rules to detect common issues like vague verbs, missing roles, missing output formats, passive voice, and missing examples. It then suggests an improved version of your prompt.

Is the prompt optimizer free?

Yes. The optimizer runs entirely in your browser. Your prompt is not sent to any server.

Can I use the optimized prompt in my projects?

Yes. The optimized prompt is yours to copy, edit, and use anywhere. You can also add it to the VePrompts Workbench for later use.

Free AI Prompt Optimizer — Improve Your Prompts Instantly

Prompt pattern library

Role + Task + Format

Act as a [ROLE]. [TASK]. Return your answer as [FORMAT].

Chain-of-Thought

Solve the following problem step by step. Explain your reasoning before giving the final answer. [TASK]

Few-Shot

[TASK]. Example 1: Input: [INPUT] Output: [OUTPUT] Example 2: Input: [INPUT] Output: [OUTPUT] Now apply the same pattern to: [INPUT]

Critique & Improve

You are a critical reviewer. Review the following [CONTENT] and identify weaknesses. Then rewrite it to address them. [CONTENT]

JSON Output

Return a JSON object with the following fields: [FIELDS]. Do not include any text outside the JSON. [TASK]

Persona Interview

You are [PERSONA]. I will ask you questions about [TOPIC]. Answer in character with depth and expertise. Question: [QUESTION]

What makes a prompt effective?

Clear role and task

Tell the model who it is and what it should do. "Act as a senior editor and rewrite this paragraph for clarity" is stronger than "fix this."

Specific format

Ask for the output shape you need: bullet points, JSON, a table, or a Markdown document. This reduces back-and-forth.

Context and constraints

Add audience, length limits, tone, and success criteria. Constraints focus the model and improve consistency.

Examples when needed

For tricky formats or styles, include one or two examples. Few-shot prompting often beats lengthy descriptions.