What YAML features does this converter support?

It supports key-value pairs, nested objects, arrays, block scalars (| and >), inline arrays/objects, comments, booleans, null, numbers, hex/octal literals, and the --- document separator.

Does it handle Kubernetes and Docker YAML files?

Yes. Kubernetes manifests and Docker Compose files are standard YAML and convert cleanly. Multi-document YAML (--- separator) is supported and processed as a single document.

Is my YAML data sent to any server?

No. All conversion runs entirely in your browser using JavaScript. Your data never leaves your device — no server, no logs, no storage.

Can I convert JSON back to YAML?

Yes. Click the Swap button or select the JSON → YAML mode to switch directions. Paste any valid JSON and get well-formatted YAML output instantly.

What happens if my YAML has a syntax error?

A red error banner appears above the output with the exact error message. Fix the YAML and the banner disappears automatically when the input becomes valid.

Can I use this for GitHub Actions and CI/CD YAML files?

Yes. GitHub Actions, GitLab CI, CircleCI, and other pipeline YAML files are all supported. The converter handles complex nested structures and arrays.

Can I minify the JSON output?

Yes. Toggle off the Pretty Print switch and the output switches to compact single-line JSON — useful for API payloads or reducing file size.

What is the difference between YAML and JSON?

YAML is a human-readable format that uses indentation for structure (common in config files). JSON uses curly braces and brackets (common in APIs). Both represent the same data types.

Can I download the converted file?

Yes. Click the Download button to save the converted output as a .json file (in YAML→JSON mode) or a .yaml file (in JSON→YAML mode).

Is there a file size limit?

The tool handles YAML and JSON files up to approximately 1MB comfortably in the browser. For very large files consider the CLI tool yq or jq.

YAML to JSON Converter - Convert YAML & JSON Instantly Online

How to Use YAML to JSON Converter

1
Paste your YAML content into the left editor panel, or click Load Sample to try an example.
2
The JSON output is generated instantly in the right panel as you type.
3
Any YAML syntax errors are shown in a red banner below the toolbar with a description.
4
Toggle Pretty Print to format JSON with indentation, or turn it off to minify JSON output.
5
Click the Copy button to copy the entire JSON output to your clipboard.
6
Click Download to save the converted output as a .json or .yaml file.
7
Use the Swap button (or switch the mode toggle) to convert JSON back to YAML.
8
Check the stats bar at the bottom for input/output character count and validity status.

About YAML to JSON Converter

Free online YAML to JSON converter — paste YAML and get JSON instantly, or switch to JSON-to-YAML mode. Includes validation, pretty-print, minification, and error detection. Works with Kubernetes, Docker Compose, GitHub Actions, and all standard YAML files.

Key Features

Bidirectional: Convert YAML to JSON or JSON to YAML with a single click.
Live Validation: Syntax errors shown instantly with clear error messages.
Pretty Print & Minify: Toggle between formatted and compact JSON output.
Download & Copy: Save output as .json or .yaml file, or copy to clipboard.
Multi-Document Support: Handles YAML files with --- document separators.

Who Is This For?

DevOps engineers working with Kubernetes manifests, developers converting config files, backend engineers debugging API payloads, and anyone who needs quick YAML/JSON conversion.

Privacy & Security

Runs 100% in your browser — no signup, no uploads, no data stored.

YAML to JSON Converter