JSON to YAML Converter

Convert JSON to human-readable YAML and YAML back to JSON in your browser. Real ...

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Convert
Indent

JSON Input

YAML Output

JSON and YAML at a glance

Key and value
name: Ada
List
skills:
  - go
  - rust
Nested object
address:
  city: London
Types
active: true, age: 30, x: null

Quick answer

To convert JSON to YAML, paste your JSON into the input box and the tool parses it in your browser and shows clean YAML instantly. It uses the js-yaml library, so numbers, booleans, null, nested objects, and arrays all convert to correct YAML types rather than quoted strings. Switch the direction toggle to turn YAML back into JSON, and choose 2 or 4 space indentation before you copy or download the result.

SSL Secured
256-bit Encryption
Cloud Processing
Mobile Friendly

Converter Features

Bidirectional - JSON to YAML and YAML to JSON
Real Types - Numbers, booleans, and null
Nested Structures - Objects and arrays indent correctly
Custom Indent - 2 or 4 space output
Friendly Errors - Line and column on bad input
Copy or Download - Save a .yaml or .json file

Why Use JSON to YAML Converter?

Human-Readable YAML

YAML drops the braces and quotes JSON needs, so the output is easier to read, edit, and comment.

Two-Way Conversion

Go JSON to YAML or YAML to JSON with one toggle. The output updates live as you type.

Real YAML Types

Numbers, booleans, and null convert to real YAML values, not quoted strings, powered by js-yaml.

100% Private

Every conversion runs in your browser. Your config never leaves your device or hits a server.

Common Use Cases for JSON and YAML

Docker Compose

Turn JSON config into a readable docker-compose.yml, or parse a compose file back into JSON.

Kubernetes

Generate K8s manifests in YAML from JSON data, or convert manifests back to JSON for API calls.

CI/CD Workflows

Build GitHub Actions and pipeline YAML from JSON, or parse workflow YAML into JSON for analysis.

App Configuration

Move config between JSON and YAML when a tool or API expects one format over the other.

How It Works

1

Paste Your JSON or YAML

Drop your JSON into the input box, or load the sample to see how the converter works.

2

Set Direction and Indent

Choose JSON to YAML or YAML to JSON, then pick 2 or 4 space indentation for the output.

3

Copy or Download

The output updates instantly. Copy it to your clipboard or download a .yaml or .json file.

Tips for JSON to YAML Conversion

Use 2 Spaces for Docker and K8s

Most Docker Compose and Kubernetes files use 2 space indentation. Match your project convention so the YAML drops straight in.

Round-Trip With Swap

Use the Swap sides button to feed the output back as input, so you can convert JSON to YAML and straight back to JSON.

Quote Ambiguous Values

If a string like a version number or a leading-zero ID must stay text, keep it quoted in your JSON so YAML does not read it as a number.

Frequently Asked Questions

Paste your JSON into the input box on the left. The tool parses it in your browser and dumps clean YAML on the right instantly using the js-yaml library. Pick 2 or 4 space indentation, then copy the YAML or download it as a .yaml file.
Yes. Click the YAML to JSON toggle and the tool reverses the direction, turning your YAML into pretty JSON. Use Swap sides to send the current output back to the input so you can round-trip between the two formats.
Yes. A JSON value like 30 stays a plain number in YAML, true and false stay booleans, and null stays null, so the output is valid YAML rather than everything wrapped in quotes. Strings that could be misread, such as a leading-zero code, are quoted automatically.
Yes. Deeply nested objects become indented YAML block mappings, and arrays become block sequences with dashes. Because the converter uses js-yaml, mixed structures like a list of objects convert with the correct indentation every time.
JSON uses braces and brackets with quoted keys and no comments. YAML uses indentation for structure, needs no braces, allows comments with #, and reads more like plain text. JSON and YAML can represent the same data, which is why this tool converts losslessly in both directions.
The tool shows a friendly error message instead of crashing. For invalid JSON it points to the line and column of the problem, and for invalid YAML it surfaces the line and column that js-yaml reports, so you can fix the syntax and watch the output reappear.
No. All parsing and conversion happen in your browser using JavaScript. Your JSON and YAML are never uploaded, which means the tool works offline and keeps sensitive config files on your own machine.

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