Can YAML be lossy when converted to JSON?

YAML-specific types like dates become strings in JSON. Ordering of map keys may also change — JSON maps are unordered.

What happens with multiple documents?

Multi-doc YAML streams are converted to a JSON array, one element per document.

YAML to JSON

Turn YAML documents into JSON. Handles anchors, multi-document streams, and block scalars. Useful when a tool expects JSON but you have config in YAML.

Runs locally in your browser

For large YAML, open fullscreen for a wider view

YAML input

0 chars · 1 line

JSON output

Output will appear here…

Indent

Sort keys alphabeticallyMulti-document stream (output as array)

JSON to YAML

Convert JSON into clean, readable YAML.

JSON Formatter

Beautify and format JSON with configurable indentation.

TOML to JSON

Convert TOML configuration files into JSON.

XML to JSON

Convert XML documents into JSON.

About YAML to JSON

Turn YAML documents into JSON. Handles anchors, multi-document streams, and block scalars. Useful when a tool expects JSON but you have config in YAML.

YAML to JSON is part of FizzKit — a collection of focused, browser-based tools. Because everything runs locally, it works offline once loaded and never exposes your data to a remote server.

Frequently asked questions

Yes. Anchors (`&`) and aliases (`*`) are resolved during conversion.

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