YAML is a human-friendly data format commonly used for configuration files (Docker Compose, Kubernetes, CI pipelines). This tool converts any valid JSON document into equivalent YAML with correct indentation. All conversion happens in your browser — your data never leaves your device.
Paste JSON and Tabreon converts it to YAML instantly — correct indentation for objects, arrays, and nested structures, entirely in your browser.
Why use Tabreon for this?
Conversion runs client-side — nothing you paste, including config secrets, is sent to a server.
Handles nested objects, arrays, and mixed types with standard YAML block-style formatting.
Instant conversion with no file upload required.
How to convert JSON to YAML
1Paste your JSON. Paste or type valid JSON into the input panel.
2Click Convert to YAML. The equivalent YAML document appears in the output panel.
3Copy or download. Copy the YAML output directly, or download it as a file.
What is YAML?
YAML ("YAML Ain't Markup Language") is a human-readable data serialization format widely used for configuration — Docker Compose files, Kubernetes manifests, GitHub Actions workflows, and CI pipelines. Unlike JSON, YAML uses indentation instead of braces and commas, which makes hand-written config files easier to read and edit.
How Tabreon handles your data
Parsing and conversion run entirely in your browser's JavaScript engine — the JSON you paste is never transmitted to a server.
Key features
Correct handling of nested objects and arrays
Standard YAML block-style output
Copy-to-clipboard and file download
Clear error message for invalid JSON input
Common use cases
Converting an exported JSON config into a Kubernetes-friendly YAML manifest
Turning an API response into a readable YAML snapshot for documentation
Migrating a JSON-based CI config to a YAML-based pipeline definition
Common mistakes & limitations
Input must be valid JSON — comments and trailing commas are not supported.
YAML anchors, aliases, and multi-document streams are not generated; output is always a single plain document.
Frequently asked questions
No. The conversion happens locally in your browser using the js-yaml library — your data is never transmitted to a server.
The input must be valid JSON. Common issues are trailing commas, single quotes, or unquoted keys — fix these (or run it through the JSON Formatter first) and try again.
Yes. Object keys appear in the output YAML in the same order they appear in the source JSON.