YAML to JSON Converter - Convert Configuration and Data

YAML to JSON Converter for Configuration and Data

The YAML to JSON Converter turns a YAML document into formatted JSON for an API, script, or test fixture. Paste the source or select a file, then review the output before saving it.

Converting a Configuration Document

Use JSON when the receiving tool expects it, for example a script that calls JSON.parse. The converter uses js-yaml to parse YAML; conversion does not establish that the result matches your application schema.

For workflows involving kubectl --raw or a source file such as recipes.yml, check the actual request or file requirements. Changing serialization does not change the document's purpose.

How to Use the YAML to JSON Converter

1. Paste or select a file in YAML Input.
2. Read JSON Output and correct input errors.
3. Check important values and types.
4. Use Copy or Download JSON, then validate the result in the destination.

Features That Do Not Transfer Directly

YAML comments beginning with # have no JSON equivalent. Literal | and folded > strings become string values rather than retaining their source layout.

Anchors such as &name and aliases such as *name can reuse values in YAML; JSON does not retain that syntax. For a stream separated by ---, convert documents separately rather than assuming the first is silently selected. Tags such as !!str and !!int also require compatible parsing and output types.

Boolean and String Examples

YAML 1.1 can interpret yes, no, on, off, true, and false as booleans. That includes cases where a country-code value such as NO becomes false.

Behavior depends on the parser schema. Check the js-yaml result rather than assuming every YAML consumer agrees on literals such as true and false.

Quote a value when it must be text: version: "1.0" is a string, while version: 1.0 expresses a number. Large numeric identifiers and date-like values deserve a separate check after serialization.

Validate Before Use

In a Kubernetes document, inspect apiVersion, kind, and metadata.name, along with other required fields. A successful parse is not a deployment check.

For repeated conversions or large files, consider a command-line workflow such as yq. Browser resources can limit large documents.

The js-yaml parser and js-yaml conversion behavior do not promise byte-for-byte round trips. Comments and formatting can be lost. Remove secrets before pasting and follow your organization's data-handling requirements.