Prompt Formatter
Format a prompt as chat messages, XML tags or Markdown.
Processed locally in your browser. Nothing you paste is sent anywhere.
Overview
Formats a system/user prompt into common shapes used when calling LLM APIs — a chat-messages JSON array, XML-tag-wrapped content (a pattern Claude responds well to), or plain Markdown sections.
How to use it
- 1Pick an output format.
- 2Fill in your system prompt and content.
- 3Copy the formatted result.