Data Tools
JSON to YAML Converter
YAML has become the standard format for Kubernetes manifests, Docker Compose files, GitHub Actions workflows, and countless other configuration files — but many tools and APIs still output JSON. This free JSON to YAML converter bridges that gap, turning JSON into clean, properly-indented YAML you can drop straight into a config file. It preserves key order and correctly represents arrays as YAML block sequences, so the structure of your data doesn't change — only the syntax does. Everything runs locally in your browser, so configuration files containing internal service names never get uploaded anywhere.
Processed entirely in your browser — your files are never uploaded anywhere.
How to use this tool
- Paste your JSON into the left box, or upload a .json file.
- Click Convert.
- Copy the YAML output or download it as a .yaml file.
Frequently asked questions
- Does this preserve key order?
- Yes, object keys keep the same order they appear in your JSON input.
- How are arrays represented?
- Arrays are converted to standard YAML block sequences (lines starting with a dash).
- Can I use this to create a Kubernetes YAML manifest from JSON?
- Yes — this is a common use case. Paste your JSON resource definition and the converter outputs valid YAML you can save directly as a .yaml manifest.
- Does it handle nested objects and arrays correctly?
- Yes, nested structures are fully supported and rendered as nested YAML mappings and sequences, matching the original JSON structure exactly.
- Is this safe for config files containing secrets?
- The conversion happens entirely in your browser, so nothing is uploaded — but as a general practice, avoid pasting real production secrets into any online tool, including this one, and use placeholder values where possible.