How to use JSON → YAML
Paste your input on the left, choose the options you want, and the output appears instantly on the right. Everything runs in your browser — none of your data is sent to a server.
- Paste or type your input in the
INPUTpanel - The output regenerates automatically as you type
- Use
Copyto put the result in your clipboard - Click
Sampleto load a working example
What is JSON → YAML?
JSON → YAML converts JSON input to equivalent YAML output via js-yaml. Key insertion order is preserved (no alphabetical sort). The output uses 2-space indent by default (toggle to 4), unquoted strings where safe, and explicit `null` / `true` / `false` tokens. Pairs with YAML Formatter (the inverse direction). This tool is part of santekno's developer toolbox — a curated collection of utilities built for engineers who care about speed, privacy, and simplicity.
Common use cases
- Debugging API payloads and integration issues
- Inspecting tokens, hashes, or encoded strings during development
- Generating fixtures and sample data for tests
- Sharing readable output with teammates in code reviews
FAQ
Sorted output destroys author intent. Source order usually carries semantic meaning (e.g., section ordering in Kubernetes manifests).
Use the YAML Formatter tool — it parses YAML and can emit JSON via its "convert to JSON" toggle.
YAML 1.2 (the modern spec) via js-yaml. Compatible with Kubernetes, GitHub Actions, Docker Compose.
No — JSON has no concept of references, so the output is fully expanded. Use YAML Formatter to handle existing anchors.
No — js-yaml uses unquoted strings where the YAML grammar makes them unambiguous (most cases). Special strings get quoted automatically.