JSON / YAML Converter

A JSON to YAML converter translates data between the two most common formats for configuration and inter-service messaging, in either direction. JSON uses braces, brackets, and quoted keys, which machines parse easily but humans find noisy for large configs. YAML expresses the same data structures (maps, lists, and scalars) through indentation and dashes, which reads more cleanly and is the default for Kubernetes manifests, Ansible playbooks, GitHub Actions workflows, and Docker Compose files. This tool converts JSON into clean YAML, quoting strings only where needed and laying out nesting by indentation, and parses indentation-based YAML back into strict JSON. The two formats are close but not identical, and the differences cause real surprises. The most important: every valid JSON document is valid YAML (YAML is a superset), but not every YAML document can become JSON without loss. YAML supports comments, JSON does not, so comments are dropped on conversion to JSON with no way to round-trip them back. YAML also has the so-called Norway problem, where unquoted no, yes, on, off, and true or false are parsed as booleans, and a value like the country code NO can silently become false unless quoted. Numbers behave differently too: a leading-zero value or a version string like 1.20 may be read as a number and lose its trailing zero unless it is quoted as a string. Converting to JSON makes these coercions explicit, which is often exactly why developers run the conversion in the first place. The current parser handles standard maps, lists, and scalars; YAML anchors, merge keys, and custom tags are not yet supported and are on the roadmap. Everything runs locally in your browser, so configuration containing secrets, hostnames, or environment details never leaves your machine.