YAML to JSON

Convert YAML to JSON instantly with precision structural controls.

YAML Input

JSON Output

{ "server": { "port": 8080, "host": "localhost", "enabled": true, "features": [ "dashboard", "analytics" ] }, "logging": { "level": "debug", "path": "/var/log/app.log" } }

verifiedReady

Validation successful. Ready for conversion.

tune Conversion Options

Indent Size

Pretty PrintSort keys alphabeticallyRemove Null values

Quick Templates

YAML vs JSON

YAML

Human-centric, indentation-based format. Preferred for complex configurations, CI/CD pipelines, and environments where readability is paramount.

JSON

Standard machine-to-machine exchange format. Strictly structured, universally supported in APIs, and optimized for high-performance parsing.

FAQ

Is the conversion secure?

Yes, all processing happens locally in your browser. Your data is never uploaded or shared.

Does it support YAML comments?

YAML supports comments natively (#). Note that JSON does not, so they will be stripped during conversion.

What is the file size limit?

UtilVox handles files up to 50MB directly in-browser with zero lag.

Two Formats, One Data Structure

Same data, different costume

YAML and JSON describe identical structures — maps, lists, scalars — with opposite priorities:

Aspect	YAML	JSON
Optimized for	Humans writing config	Machines exchanging data
Structure via	Indentation	Braces and brackets
Comments	Yes (#)	None — a real limitation
Quotes	Usually optional	Mandatory for strings
Lives in	Kubernetes, CI pipelines, Docker Compose	APIs, browsers, almost every language

YAML's famous foot-guns

Indentation is structure, so one wrong space silently changes meaning — and tabs aren't allowed at all. Then there's implicit typing: unquoted no becomes boolean false (the “Norway problem” — country code NO turning into false in YAML 1.1 parsers), version numbers like 3.10 become the float 3.1, and a value with a stray colon grows an unintended nesting level. Converting to JSON exposes all of it: what the parser actually understood becomes explicit, which is why this conversion doubles as YAML debugging.

Typical trips through this tool

A Kubernetes manifest converted to JSON for an API call; a CI config checked against what the parser really sees; an app config translated for a JSON-only library. Validate the output in the JSON formatter, go the other direction with JSON to YAML (comments won't materialize from nowhere, but structure converts perfectly), and legacy XML configs untangle in the XML formatter.