ToolWren › YAML ⇄ JSON

YAML ⇄ JSON Converter

Convert YAML configuration into JSON, or turn JSON back into clean YAML. Handy for editing config files, Kubernetes manifests and CI pipelines.

100% client-side · nothing is uploaded

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How to use the YAML ⇄ JSON

Choose the mode you need with the Encode / Decode toggle at the top of the tool.
Type or paste your text into the Input box — the result appears instantly as you type.
Use Swap (⇅) to move the output back into the input and flip the mode, which is handy for round-trips.
Click Copy to copy the result, or Clear to start over.

Privacy: this tool runs entirely in your browser. Your input is never sent to, received by, or stored on any server — there are no uploads and no tracking of what you enter.

About YAML ⇄ JSON

YAML and JSON

YAML and JSON describe the same data model — maps, lists and scalar values — but YAML is indentation-based and friendlier for humans, while JSON is ubiquitous in APIs and tooling. Converting between them is a constant need in DevOps.

What this tool supports

It handles nested maps, lists, and scalar types (strings, numbers, booleans and null). Paste YAML to get formatted JSON, or paste JSON to get readable YAML.

Tips

Keep YAML indentation consistent (two spaces is standard). For complex anchors, multi-document streams or advanced tags, use a full YAML library — this tool targets everyday config files.

Frequently asked questions

Does it support nested structures?

Yes — nested maps and lists convert in both directions.

Are data types preserved?

Numbers, booleans and null are detected and preserved; everything else is treated as a string.

Is my config uploaded?

No. Conversion runs entirely in your browser.