How to use the TOON to XML
- Paste your TOON into the input box, or open a file.
- Adjust the options if needed. The output updates as you type.
- Copy the XML or download it as a file.
About TOON
TOON (Token-Oriented Object Notation) is a compact encoding of JSON designed for LLM prompts. It uses YAML-style nesting and CSV-style rows for uniform arrays, typically cutting token counts substantially compared with JSON.
About XML
XML is a markup format for structured documents and data, still common in SOAP APIs, RSS feeds, Android resources, Maven builds and enterprise integrations. Elements can carry attributes as well as child elements.
How it works
Keys starting with @ become attributes. A single top-level key becomes the root element; otherwise everything is wrapped in <root>.
Private by design
Developer data is often sensitive: API responses, tokens, customer records, internal configs. This TOON to XML processes everything locally in your browser tab. There is no server round-trip, no logging and no storage of your input.
Frequently asked questions
Is this TOON to XML free?
Yes. This TOON to XML is completely free to use with no sign-up, no limits and no ads inside the tool.
Is my data uploaded to a server?
No. The TOON to XML runs entirely in your browser using JavaScript. Nothing you paste is sent to DevT Pro or any other server.
Does the TOON to XML conversion lose data?
Keys starting with @ become attributes. A single top-level key becomes the root element; otherwise everything is wrapped in <root>.
Can I use the TOON to XML offline?
Yes. TOON to XML is also built into DevT Pro, a native app for Mac, Windows, iPad and Linux with 120+ developer tools that work fully offline. It is a $5.99 one-time purchase with no subscription.
