YAML ↔ JSON Transpiler

An offline Abstract Syntax Tree (AST) cross-compiler that translates application/json structures directly to text/yaml. Perfect for formatting Kubernetes manifests, Docker Compose grids, and CI/CD pipeline variables securely.

What is the Offline YAML Parser?

Converts between JSON and YAML in both directions as you type, using the same 'yaml' npm library that many Node.js tools rely on.

How it works

Whichever side you last edited gets parsed — JSON.parse for JSON, or the yaml package's parser for YAML — and the resulting object is immediately re-serialized into the other format (yaml.stringify or JSON.stringify) and written into the other panel. A parse error on either side is shown inline instead of overwriting the other panel with garbage.

SysAdmin & security use cases

Convert a Kubernetes manifest to JSON to feed into a script that expects JSON input.
Turn a JSON config object into YAML for a Docker Compose or CI pipeline file.
Check that a hand-edited YAML file is valid before committing it.
Compare the equivalent JSON structure of a YAML file to spot an indentation mistake.