YJYAML ↔ JSON Converter
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YAML (YAML Ain't Markup Language) and JSON (JavaScript Object Notation) are the most widely used formats for configuration files and data exchange. Docker Compose, Kubernetes, and GitHub Actions use YAML, while REST APIs and package management (package.json) primarily use JSON. This tool provides real-time bidirectional conversion between both formats.
How to Use
- 1Select Direction
Choose the 'YAML → JSON' or 'JSON → YAML' tab.
- 2Enter Data
Paste your YAML or JSON data in the left input area.
- 3Review Results
View the converted result in the right panel and copy it to your clipboard.
Tips
- 💡Convert Kubernetes manifests (YAML) to JSON for direct API submission.
- 💡Converting JSON configs to YAML allows adding comments for better readability.
- 💡Adjust JSON output readability with the indentation option.
- 💡All processing happens in your browser, so sensitive config files are never sent to a server.
FAQ
- Q. What are the main differences between YAML and JSON?
- A. YAML uses indentation instead of brackets, supports comments, and is more readable for humans. JSON is faster to parse and universally supported. YAML is popular for configuration files; JSON is preferred for API data exchange.
- Q. Are there common YAML parsing pitfalls to watch out for?
- A. Yes. YAML 1.1 parses yes/no/on/off as booleans (the "Norway Problem"). Numbers starting with 0 may be parsed as octal. Always quote values that could be misinterpreted, and use YAML 1.2 where possible.
- Q. Why do Kubernetes and Docker Compose use YAML?
- A. YAML's hierarchical indentation, support for comments, and readability make it well-suited for complex configuration files. It is more concise than XML and more human-friendly than JSON for multi-line structured data.