AI Prompt Formatter
Paste a prompt written in one long paragraph or as quick notes, and get it back neatly organised. The formatter recognises labelled sections such as “Role:” or “Rules:”, or sorts sentences by typical phrasing – “You are…” goes to Role, “Answer as a table” to Output format, “Do not…” to Constraints, “under 400 words” to Length. It tidies spacing and capitalisation, numbers the rules and outputs Markdown, XML tags, plain labels or a JSON object.
- Runs in your browser
- No sign-up
- Free to use
How to use AI Prompt Formatter
- Paste your prompt.
- Choose a layout.
- Check where each sentence landed.
- Copy the formatted prompt.
AI Prompt Formatter features
Section detection
Labels or typical phrasing.
Four layouts
Markdown, XML, plain, JSON.
Tidy text
Spacing and capitals.
Numbered rules
Optional.
Missing parts
Lists what is not there.
Private
Built in your browser; nothing is sent to an AI service.
When to use AI Prompt Formatter
- Cleaning prompts before sharing them.
- Converting prompts to XML for Claude.
- Storing prompts as JSON in apps.
- Reviewing colleagues’ prompts.
AI Prompt Formatter FAQ
Does it change my meaning?
No. It only moves and tidies sentences; check that each landed in the section you intended.
Why JSON?
Applications often store prompt parts as fields so they can be combined and versioned.
Markdown or XML tags?
Both work with modern models. XML tags such as <task> and <context> are recommended by Anthropic for Claude and help any model separate instructions from data; Markdown headings are easier to read.
What if it misplaces a sentence?
Add labels like “Context:” to your prompt and run it again; labels always win.
Do models really follow structured prompts better?
Clear sections make it easier for models to tell instructions from context and examples, which reduces mistakes in longer prompts.
Why formatting matters
A wall of text hides instructions. When rules, context and the requested format are clearly separated, both people and models read them more reliably.
Formatting also makes prompts easier to maintain: you can change the audience or the length without rewriting everything.
Prompts written as one long paragraph mix instructions, context and examples, which makes them hard to edit and easier for models to misread. The formatter sorts the content into clear sections – role, task, context, rules, output format and examples.
Labelled sections such as “Role:” are recognised directly; unlabelled sentences are sorted by typical phrasing, for example “You are…” to Role and “Answer as a table” to Output. Check the sorting and move any sentence that landed in the wrong section.
Formatting happens in your browser and no AI is called. A well-structured prompt is also easier for colleagues to reuse and improve.