YAML ↔ JSON Converter
Convert configuration files seamlessly between YAML and JSON formats with support for multi-document structures, anchor resolution, and live syntax validation.
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Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It uses indentation to express structure and is commonly used for configuration files (Docker Compose, Kubernetes, GitHub Actions, etc.).
When should I use YAML vs JSON?
Use YAML for configuration files that humans write and read — it supports comments and is less verbose. Use JSON for data exchange between systems — it is a strict standard supported by every programming language without extra libraries.
Does YAML support comments?
Yes, YAML supports comments with the # character. However, when converting YAML to JSON, all comments are lost since JSON does not support comments.
What are YAML anchors and aliases?
Anchors (&) let you define reusable content, and aliases (*) let you reference it elsewhere in the document. This prevents duplication in YAML config files. This converter resolves anchors/aliases before converting to JSON.