YAML formatter
Format or minify YAML, or convert it to JSON. Processing stays in your browser.
About YAML formatter
Format YAML online, minify it, or convert YAML to JSON with this free YAML formatter. Choose your indentation to produce consistent, readable configuration files for Kubernetes, Docker Compose, CI pipelines, Helm-adjacent snippets, and application settings. Converting to JSON makes it easy to feed the same data into APIs, jq, and scripts that prefer JSON.
Inconsistent YAML indent is a common source of review comments and runtime bugs. A formatter normalizes spacing so diffs in git show real changes, not whitespace noise. Minify when you need a compact blob. YAML to JSON is the usual next step when a tool cannot consume YAML directly. Platform and application developers format a paste from docs, then copy a clean version back into the repo.
If the YAML cannot be parsed, format and convert will not invent a document; use the YAML validator to find the line. After a successful format, the output is ready for a pull request. JSON output can be opened in the JSON viewer or checked with JSON Schema if you have a schema for that config.
All formatting and conversion happens in your browser, so config files are never uploaded to a server. Cluster manifests and secrets in YAML stay on your device. Use this free YAML formatter, YAML beautifier, and YAML to JSON converter whenever you need clean, private config.