Data helper

JSON ⇔ YAML Converter

Convert JSON and YAML in both directions by simply pasting your data.
Switch between JSON to YAML and YAML to JSON instantly and view formatted results in real time.

This tool provides immediate feedback when formatting errors occur, helping you quickly identify syntax issues in configuration files or API payloads.
Converted results can be copied with a single click, making it easy to reuse them
in development, deployment, or documentation workflows.

All conversions are performed directly in your browser.
No input data is sent to any server, ensuring a fast and secure experience
for developers working with configuration files and structured data.

JSON input

YAML input

Formatted results will appear here.

Guide

How to use & features

Paste JSON on the left or YAML on the right, then click the corresponding convert button.
If parsing fails, the status message turns red and shows the error details.
Swap inputs or clear both panels to iterate quickly.

Samples

Sample input & output

Transform JSON to YAML

Input

{"service":"api","port":8080,"enabled":true}

Output

service: api
port: 8080
enabled: true

FAQ

Frequently asked questions

Are YAML anchors or aliases preserved?

The converter focuses on straightforward structure changes, so it does not add anchors, aliases, or other advanced YAML features.

Can I change indentation?

Output uses a readable space-based indent. If you need a different width, copy the result and adjust it in your editor.

What happens to line breaks or key order?

The data is reformatted, so ordering and line wrapping may change, though the meaning of the content stays the same.

Use cases

Common use cases

Converting config formats
Flip between YAML and JSON to match what tools like Compose or Helm expect.
Formatting for documentation
Share readable YAML in design docs or store machine-friendly JSON for automation.
Prepping files for diffing
Normalize differing formats before comparing so you focus on content changes only.

Notes

Notes & limitations

Work stays in your browser
Inputs and outputs remain local. Closing the tab or clearing cache will remove any temporary state.
Validate critical data
Results are helper outputs—double-check them before sending to production systems or sharing externally.
Large payloads depend on your device
Very large text or files can feel slow in some browsers. Use a desktop environment for heavy workloads.