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JSON ↔ YAML Converter

JSON ↔ YAML Converter

JSON ↔ YAML Converter supports bidirectional conversion between JSON and YAML with side-by-side editing and instant sync, making it useful for Kubernetes, Helm, CI configs, and API debugging.

JSON indent

YAML indent

Sort keys

Split array into multi-doc YAML (--- separated)

JSON

⇄

YAML
JSON ↔ YAML Converter

Quick Start

1
Paste or type JSON in the left editor, and YAML on the right updates automatically.
2
You can also type YAML on the right, and JSON on the left updates automatically.
3
Synchronization is fully bidirectional. No mode switch is needed: edit either side, and the other side updates instantly.
4
Use the top toolbar to set JSON/YAML indentation, enable key sorting, and toggle multi-document YAML output.
5
Press Tab in the editor to insert indentation instead of moving focus.
6
Each editor has Copy and Clear buttons in the top-right corner. Clearing either side clears both sides.

Common Scenarios

Kubernetes authoring

convert K8s resource manifests between YAML and JSON to inspect structure from either view.

Helm values debugging

convert values.yaml to JSON to inspect types and nesting in your IDE.

CI/CD pipelines

quickly convert snippets between GitHub Actions (YAML) and CI systems that use JSON.

API debugging

convert JSON payloads to YAML for a clearer hierarchical view.

Configuration migration

batch-convert config files between YAML and JSON.

Formatting and validation

verify JSON/YAML syntax via two-way sync, with line/column error location.

Usage Advice

A 2-space JSON indent works for most cases; use 4 spaces for deep nesting or Helm values files.
Enable Sort keys to output properties in alphabetical order, which helps compare config differences.
When the JSON root is an array, enable Multi-document YAML to split each element into a separate document (---), useful for multi-resource K8s files.
If input is invalid, the corresponding editor highlights the error line; hover or tap to view line/column details, and the other side keeps its last valid content.
For large content, paste first and wait for sync, then continue editing to avoid excessive re-conversion.

Limitations & Compatibility

YAML parsing follows the YAML 1.2 spec. Some YAML 1.1-specific behavior (for example, yes/no auto-boolean conversion) may differ.
JSON numbers follow JavaScript IEEE 754 limits. Integers beyond 53-bit safe precision may lose accuracy.
YAML anchors and aliases (&, *, <<) are expanded to concrete values when converted to JSON; references cannot be preserved.
YAML comments are dropped during conversion because JSON does not support comments.

Privacy & Security

All processing happens locally in your browser. You can replace, clear, and re-run the current content at any time.

FAQ

5

Continue with these related tools for the next step.