Are the JSON, YAML, XML, and CSV converters free?

Yes. Each converter runs in your browser. We do not require signup, and typical flows do not upload your pasted text or files to our servers.

Which format pairs are supported?

This hub lists converters between JSON, YAML, XML, and CSV. Choose the pair you need to open a dedicated tool with previews and copy-ready output.

Converters

Free online data converters

Swap between JSON, YAML, XML, and CSV — in your browser. No signup. No upload. Every conversion runs locally on your device, so sensitive data stays sensitive.

JSO → YAM

Convert JSON to YAML

Paste JSON, get clean YAML in one click. Free, private, in-browser converter with support for nested objects, arrays, anchors, and custom indentation.

YAM → JSO

Convert YAML to JSON

Paste YAML, get valid JSON back. Free browser-based converter with support for anchors, multi-doc streams, and pretty-printed output. Nothing uploaded.

JSO → XML

Convert JSON to XML

Transform JSON into clean, well-formed XML. Configure root element, attribute handling, and array naming. In-browser, privacy-first, no signup.

XML → JSO

Convert XML to JSON

Transform XML documents into clean JSON. Handles attributes, namespaces, text nodes, and CDATA. In-browser, privacy-first, no upload.

JSO → CSV

Convert JSON to CSV

Flatten any JSON array of objects into a clean CSV. Choose delimiter, header row, and how to handle nested fields. Free, in-browser, no upload.

CSV → JSO

Convert CSV to JSON

Turn CSV into JSON objects or arrays. Auto-detects delimiter, handles quoted fields, guesses numeric types, and supports large files. In-browser.

Comparisons

Deciding which format to use? See JSON vs YAML, JSON vs XML, and more.

Developer guides

Step-by-step how-tos for formatting, validating, and minifying in your editor or CLI.