JSON & XML Formatter
Format, validate, minify, copy, and download JSON or XML instantly in your browser.
What is a JSON Formatter?
JSON (JavaScript Object Notation) is a lightweight text format for storing and exchanging structured data. A JSON formatter takes raw or minified JSON and rewrites it with consistent indentation, making it easy for developers to read, debug, and validate.
What is an XML Formatter?
XML (eXtensible Markup Language) is a widely used standard for encoding hierarchical data. An XML formatter restructures tag-soup or single-line XML into properly indented, human-readable markup, preserving declarations, attributes, text nodes, and comments.
JSON vs XML
JSON is more concise and native to JavaScript, making it the dominant format for REST APIs and web applications. XML offers richer namespacing, schema validation (XSD), and document-oriented features, and remains standard in enterprise systems, SOAP services, and document formats like SVG and RSS. Both are human-readable and widely supported.
Frequently Asked Questions
What does a JSON formatter do?
It parses JSON text and rewrites it with proper indentation and line breaks, making nested objects and arrays easy to read and debug.
What does an XML formatter do?
It parses XML, then reconstructs the markup with consistent 2-space indentation for every level of nesting, while preserving declarations, attributes, and comments.
Does this tool upload my data anywhere?
No. Your JSON and XML data is processed entirely in your browser and is never sent to our server. The only external requests this page makes are to load the page itself.
Can I format large JSON or XML files?
Yes, within reason. The formatter runs synchronously in your browser tab, so very large files (tens of MB) may cause a brief pause. For files larger than a few hundred KB we recommend a dedicated desktop tool. The formatter will warn you if the input is unusually large.
Is this formatter free to use?
Yes, completely free. No login, no account, no limits.
🔒 Your JSON and XML data is processed locally in your browser and is not sent to our server.