JSON → YAML
Convert JSON data to YAML format
No watermarkFree & unlimited
Mode
Input (JSON)
Output (YAML)
All processing happens in your browser. No data is sent to any server.
About this tool
- 1
Paste or upload JSON
Enter your JSON data in the input area or upload a .json file.
- 2
Configure YAML style
Choose flow vs. block style, indentation width, and string quoting preferences.
- 3
Preview the YAML
Review the generated YAML output with syntax highlighting.
- 4
Copy or download
Copy the YAML text or download it as a .yml file.
- Block style (default) is more human-readable; flow style is more compact and closer to JSON syntax.
- Long strings are automatically formatted as YAML multi-line literals for better readability.
- JSON null values become YAML null (or ~) - both are valid YAML representations.
- Use 2-space indentation for Kubernetes and Docker Compose compatibility.
- Configurable block or flow output style
- Smart string quoting - only quotes when necessary
- Converts JSON arrays to YAML sequences with clean formatting
- Handles deeply nested structures with proper indentation
- Preserves numeric precision and special float values
- Generate Kubernetes manifest files from JSON templates
- Create human-readable config files from JSON API responses
- Convert JSON CI/CD configurations to YAML format for GitHub Actions or GitLab CI
- Produce OpenAPI/Swagger specs in YAML from JSON definitions
Yes. The output follows YAML 1.2 specification and uses standard indentation compatible with Kubernetes, Docker Compose, and other tools.
Empty objects become {} and empty arrays become [] in flow style, maintaining valid YAML syntax.
The automatic conversion does not add comments since JSON has no comment equivalent. You can add comments manually after exporting.