YAML to JSON Converter Online
Convert between YAML and JSON
Como usar YAML para JSON
- 1
Paste your data
Enter YAML or JSON in the input panel.
- 2
Choose direction
Select YAML to JSON or JSON to YAML.
- 3
Copy result
The converted output is shown instantly — click copy to use it.
Perguntas frequentes
Is my data safe?
Does it support multi-document YAML?
Are YAML comments preserved when converting to JSON?
What YAML version is supported?
Why does a YAML 'yes' value convert to 'true' in JSON?
Saiba mais
O que é YAML to JSON?
Convert YAML to JSON or JSON to YAML instantly with syntax validation and error highlighting. Essential for working with infrastructure configuration files, Kubernetes manifests, Docker Compose files, GitHub Actions workflows, and CI/CD pipeline definitions. YAML is easier to write and read; JSON is required for APIs and tools that do not support YAML. Switch between them in seconds — all processing happens in your browser with no server uploads required.
Por que usar YAML to JSON?
- Instant bidirectional conversion — convert YAML to JSON or JSON to YAML with one click.
- Syntax validation — invalid YAML or JSON is caught with a clear error message showing the problem location.
- Essential for cloud-native workflows — Kubernetes, Helm, Docker Compose, and GitHub Actions all use YAML.
- Preserves all data types — strings, numbers, booleans, arrays, and nested objects are accurately translated between formats.
- Completely private — your configuration files and infrastructure code never leave your browser.
Casos de uso de YAML to JSON
Kubernetes manifest authoring
Convert JSON patches or API examples to YAML for use in Kubernetes deployment files, or convert YAML manifests to JSON for programmatic manipulation.
CI/CD pipeline debugging
Convert GitHub Actions, GitLab CI, or CircleCI YAML configs to JSON to inspect their structure programmatically or validate with JSON Schema.
Helm chart development
Convert JSON values files to YAML for Helm charts, or convert Helm output to JSON for debugging rendered templates.
API configuration
Many APIs (AWS, Terraform) accept both YAML and JSON. Convert between them as needed when copying examples from documentation that uses a different format than your project.
Dicas e boas práticas
- 💡YAML is a superset of JSON — valid JSON is always valid YAML. You can convert JSON to YAML safely, but YAML features like comments and anchors do not have JSON equivalents.
- 💡YAML indentation matters — use spaces, never tabs. YAML parsers will reject files that mix tabs and spaces.
- 💡YAML comments (# comment) are lost when converting to JSON because JSON has no comment syntax. If you need comments, keep the YAML as the source of truth.
- 💡YAML has a gotcha with unquoted special values: yes, no, true, false, on, off, null are parsed as booleans or null rather than strings. Quote them if you mean the literal text.
Como funciona
YAML parsing uses the js-yaml library, which implements the YAML 1.2 specification and correctly handles all data types including multi-line strings, anchors, aliases, and complex mapping keys. JSON-to-YAML conversion uses js-yaml's dump() function with 2-space indentation. YAML-to-JSON uses yaml.load() followed by JSON.stringify() with 2-space indentation. The js-yaml library runs entirely in the browser bundle — no network request is made during conversion. Multi-document YAML (files with --- separators) is parsed as the first document.
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