YAML to JSON
Convert YAML documents into JSON. Anchors (&ref), references (*ref), multiline strings, and all standard YAML 1.2 types are supported via js-yaml — entirely in your browser.
YAML in, JSON out
A small sample to show the shape of the conversion. Pretty-printed output, types preserved where possible.
name: hcodx tags: - dev - tools
{
"name": "hcodx",
"tags": ["dev", "tools"]
}What you'll use this for
YAML to JSON shows up in every backend and ETL stack — feeding APIs, migrating configs, debugging payloads.
API & data imports
Prepare payloads for REST APIs and ingestion endpoints.
Data migration
Move configuration and tabular data between systems and formats.
Debugging
Inspect production data in a sensible, structured form.
ETL pipelines
Stage transformations between formats in your data flow.
How to convert YAML to JSON
Paste your YAML
Drop your source into the left editor. The sample loads on first visit — replace it with your data.
Click Convert
Or leave Auto-convert on for live updates as you type. Conversion runs locally.
Review the output
The right pane shows pretty-printed JSON with status, byte counts, and line count.
Copy or download
Use the action bar to copy to clipboard or save as a file. Or jump to the reverse converter for round-trip checks.
Frequently asked questions
YAML 1.2 via js-yaml 4.x — the de facto JS parser used by Webpack, GitHub Actions tooling, etc.
Yes — &name anchors and *name aliases are dereferenced inline before output.
Block scalars (|, >) and their chomping/folding modifiers are supported.
Yes for the safe-load subset (!!str, !!int, !!seq, etc.). Custom tags throw.
Yes. js-yaml runs in the browser; nothing is uploaded.
About YAML to JSON
YAML is the human-friendly config format. Kubernetes manifests, GitHub Actions workflows, Ansible playbooks, OpenAPI specs — all YAML. JSON is what tools speak. This converter bridges them using js-yaml's safe loader.
How parsing works
jsyaml.loadparses YAML 1.2 (safe schema by default).- Anchors and references resolve to real values.
- Numbers, booleans, nulls, dates, lists, and maps map naturally to JSON.
- JSON output is pretty-printed.
Use cases
- Inspect Kubernetes manifests as JSON for kubectl-free tooling.
- Convert GitHub Actions workflows for static analysis.
- Translate OpenAPI YAML specs for JSON-only validators.