Working with JSON, XML and YAML: Format, Validate and Convert

Every developer has pasted a wall of minified JSON and squinted at it trying to find the one missing comma. Structured-data tools turn that pain into a two-second fix.

Format and validate JSON

JSON Formatter pretty-prints JSON with proper indentation and instantly flags syntax errors, pointing you to the exact line. It's the fastest way to make an API response readable and to catch a malformed payload.

Work with XML and YAML too

• XML Formatter indents and validates XML.
• YAML to JSON and JSON to YAML convert between the two config favourites.

Convert between formats

Data rarely stays in one shape. Common conversions:

• JSON to CSV — turn an array of objects into a spreadsheet.
• JSON to XML — bridge to XML-based systems.
• YAML to JSON — for tooling that only speaks JSON.

Why it matters

Well-formatted data is easier to read, easier to diff in code review, and far easier to debug. Validating before you ship catches errors that would otherwise blow up in production.

Everything here runs in your browser — paste sensitive config or tokens without worrying about them being sent anywhere.