Does the converter handle anchors and aliases?

Yes. The underlying js-yaml library resolves YAML anchors (&) and aliases (*) so the resulting JSON is a fully materialized, self-contained document.

Is anything sent to a server?

No. Conversion runs entirely in your browser.

YAML to JSON

Key Features

Converts YAML to JSON

Configurable indentation (2 / 4 / minify)

Handles nested mappings and sequences

Preserves string and number types

Copy and download JSON output

Import YAML from URL or file

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Free Online YAML to JSON Converter

Convert YAML documents to clean, structured JSON with our online YAML to JSON converter. Paste any YAML — Kubernetes manifests, GitHub Actions workflows, Docker Compose files, Ansible playbooks — and instantly receive valid JSON you can feed to APIs, save to files, or paste into JavaScript code.

What it handles

Mappings and sequences: Converted into JSON objects and arrays
Anchors and aliases: Resolved automatically — the resulting JSON is fully expanded
Multi-line strings: Block scalars (|, >) and folded styles are converted correctly
Native types: Numbers, booleans, null, and date strings are preserved as JSON natives
Comments: Stripped (JSON does not support comments)

Indent options

Indent 2: Standard pretty-printed JSON
Indent 4: More airy formatting for documents with lots of nesting
Minify: Strips all whitespace for the smallest possible output

Why convert YAML to JSON?

Many APIs, JavaScript libraries, and data pipelines speak JSON natively. Converting a YAML config to JSON lets you:

Validate YAML structure visually against a JSON schema
Import infrastructure config into a JavaScript build tool
Save tokens when sending data to LLM APIs that prefer JSON
Translate a YAML test fixture into a JSON test fixture

Pair with related tools

Once converted, use the JSON Formatter to fine-tune the result, the JSON Validator to confirm correctness, or the JSON to YAML converter to go the other way.