Can nested objects and arrays be converted?

Yes. Objects and sequences are serialized with proper nested indentation, including empty arrays and objects.

Why are some strings quoted?

Quoting prevents strings such as true or text containing a colon from being interpreted as a different YAML value.

Does the tool preserve JSON formatting?

No. It converts parsed JSON values to YAML. Original whitespace and formatting are not retained.

What happens if JSON is invalid?

The output is cleared and a parse error is shown with location details. Fix the input before copying a new result.

Yes. JSON validation and YAML serialization happen in your browser without uploading the input.

DeveloperReady to use

JSON to YAML

Transform JSON into YAML for configuration files, deployments, and readable structured data.

Guide

Interactive workspace

No account required

JSON to YAML

JSON file

You can also drag and drop a .json file onto the input. Conversion runs as you type.

IndentationNull styleString style Sort keys alphabetically

How to use it

Paste valid JSON with double-quoted keys and strings.
Select Convert JSON to YAML.
Inspect nested indentation and copy the YAML.

What is JSON to YAML?

Transform JSON into YAML for configuration files, deployments, and readable structured data.

How it works

The browser validates JSON, then a YAML 1.2 serializer emits two-space indentation for nested objects and sequences. Strings are quoted where required to preserve their types. Syntax errors include parser location details; edits and failures clear obsolete output.

Example input and expected output

Input

{"tools":["JSON","YAML"]}

Expected output

tools:
  - JSON
  - YAML

Common uses

Convert a JSON development configuration to YAML.
Represent arrays of objects as properly indented YAML sequences.

Limitations

JSON is parsed using JavaScript numeric precision; quote large integer identifiers before conversion.
JSON comments, trailing commas, and undefined values are not accepted.

Frequently asked questions

Can nested objects and arrays be converted?: Yes. Objects and sequences are serialized with proper nested indentation, including empty arrays and objects.
Why are some strings quoted?: Quoting prevents strings such as true or text containing a colon from being interpreted as a different YAML value.
Does the tool preserve JSON formatting?: No. It converts parsed JSON values to YAML. Original whitespace and formatting are not retained.
What happens if JSON is invalid?: The output is cleared and a parse error is shown with location details. Fix the input before copying a new result.
Is conversion local?: Yes. JSON validation and YAML serialization happen in your browser without uploading the input.