JSON ↔ YAML Converter

Convert JSON to YAML or YAML to JSON in the browser with js-yaml: JSON.parse + YAML dump (2-space indent, 120-char wrap) or yaml.load + pretty JSON (2-space indent). Debounced live conversion as you type, line numbers on both sides, Convert now, copy, and download output.yaml / output.json.

jsonyamldata

Category: Data & Text Processing

Conversion runs as you type (debounced). Use “Convert now” to force immediately.

JSON input

Type to convert (debounced)

YAML output

Why convert between JSON and YAML?

JSON is ubiquitous in APIs and browser tooling. YAML is often preferred for Kubernetes manifests, CI configs, Ansible, and human-edited files because comments and less punctuation reduce noise. Converting lets you translate the same data model between ecosystems, reformat a pasted snippet for readability, or quickly check that YAML matches an expected JSON structure.

How this converter works

Choose JSON → YAML or YAML → JSON. In JSON → YAML mode the input is parsed with JSON.parse, then serialized with js-yaml’s dump using 2-space indentation and a 120-character line width for wrapping long scalars. In YAML → JSON mode the input is parsed with yaml.load and written back as JSON.stringify with 2-space indentation. A short debounce waits while you type so the output is not recomputed on every keystroke; use Convert now to run immediately. Status shows Valid or the parser error message.

Editor features

Synchronized line-number gutters for input and output panes.
Copy the result or download output.yaml / output.json as plain text.

Privacy

Parsing and serialization run entirely in your browser. Your documents are not sent to Dynamic Duniya servers.

Frequently Asked Questions

Does YAML → JSON preserve comments?

No. Comments exist only in YAML source; once parsed into data and emitted as JSON they cannot be recovered. Keep a backup of commented YAML if you need to round-trip with comments.

What YAML features are supported?

The page uses the js-yaml library (JavaScript YAML 1.2 implementation). Most common maps, sequences, anchors, merges, and tags work for typical config files. Exotic extensions or multi-document streams may need validation in your target runtime.

Why did JSON → YAML fail?

JSON must be strictly valid — trailing commas, single-quoted strings, or unquoted keys are rejected by JSON.parse. Fix syntax or paste minified JSON from a validator first.

Can I convert very large files?

Everything is held in memory in the tab. Huge documents may feel slow or hit browser limits; prefer CLI tools for multi-megabyte streams.

Is this JSON ↔ YAML tool free?

Yes. No account is required.

Tips

Quick guidance for using our tools safely and effectively.

Privacy

Files are processed on the server for conversion only and are not used for training or shared with third parties.

Best results

Use the formats suggested in each tool. Large media files may take longer — keep the tab open until processing finishes.

Need something else?

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