Developer Tools calculators
Convert between JSON, XML, and YAML, generate UUIDs and slugs, and validate sitemaps — all client-side, nothing leaves your browser.
Converters
3 toolsXML to JSON Converter
Paste XML and get clean, formatted JSON instantly — parsed with a real XML parser, not regex.
YAML to JSON Converter
Paste YAML and get clean, formatted JSON instantly — including multi-document files and anchors.
JSON to XML Converter
Paste JSON and get well-formed XML instantly — with a configurable root element and attribute convention.
Generators
2 toolsValidators
1 toolsAbout Developer Tools tools
These tools are built for engineers who need a quick, correct conversion without spinning up a script or trusting a random online form. The XML to JSON, YAML to JSON, and JSON to XML converters all use real parser libraries — not regex — so attributes, nested arrays, namespaces, and YAML anchors convert correctly instead of silently breaking on edge cases. Each documents its exact conversion convention on the page, so output is predictable and the XML ⇄ JSON converters round-trip cleanly with each other.
The UUID / GUID Generator produces cryptographically secure v4 UUIDs (and time-ordered v7s) in bulk using the browser's native crypto API — a GUID is just Microsoft's name for the same value. The Slug Generator handles accented Latin text cleanly, and the Sitemap Validator checks your XML against the sitemaps.org protocol before you submit it to Search Console. Every tool here runs entirely client-side: nothing you paste is ever uploaded.