Paste YAML from CI, Kubernetes-like manifests or app config, then inspect syntax diagnostics, JSON output and a tree summary without sending input to a backend.
Choose a real-world preset, edit the YAML and review line-level diagnostics, JSON output and node structure.
A GitHub Actions-like workflow with arrays, nested maps and command strings.
Parsed cleanly
This is YAML syntax conversion, not Kubernetes, GitHub Actions, Helm or OpenAPI schema validation.
No parser errors or warnings were reported for this browser-only YAML syntax pass.
Use repository or platform-specific validators for Kubernetes, GitHub Actions, Helm or OpenAPI schema rules.A single misplaced space can change a sequence into a mapping or break the document. The parser reports line and column details so reviewers can fix structure before debating schema rules.
Values such as yes, on, dates, null and numbers may be interpreted differently by YAML versions and downstream tools. Treat JSON output as a conversion view, not as final platform validation.
Anchors, aliases and merge keys are useful in YAML but do not survive as YAML syntax in JSON. The playground flags them so the consuming platform remains part of the review.
YAML often sits next to schema, TypeScript and formatting decisions. These tools cover adjacent review surfaces in the same private browser workflow.
No. The MVP validates YAML syntax and conversion behavior. Platform schemas are intentionally out of scope and should be checked with the consuming toolchain.
A single YAML document becomes one JSON value. A stream separated by document markers becomes a JSON array, preserving the document count in the summary.
JSON has no native anchor or merge-key syntax. The playground can resolve values for inspection, but it does not promise YAML round-trip formatting.
No. The parser runs in the browser for this public playground. The page does not add accounts, history or remote fetch in the MVP.