YAML Viewer & Formatter
Validate, format, and inspect YAML files in a browser-based tree viewer. Paste YAML or open a file without backend upload.
Use this free YAML viewer and formatter to clean, inspect, and validate YAML documents entirely in your browser. Paste YAML or open a local file, then format with configurable indentation, toggle comment preservation, and explore the document tree to trace aliases and anchors. Validation failures are reported with line and column positions. All processing is browser-only with no content sent to any server. Useful for developers reviewing Kubernetes manifests, OpenAPI specs, CI/CD pipeline configs, and other YAML-based configuration files.