YAML / JSON Converter
Convert between YAML and JSON formats. No external libraries -- built-in parser handles nested objects, arrays, and all common YAML types.
Converted output will appear here.
YAML to JSON
Parse YAML with support for nested objects, arrays, quoted strings, numbers, booleans, and null values. No external dependencies.
JSON to YAML
Convert JSON structures into clean, indented YAML with proper formatting. Handles deep nesting and all JSON types.
Built-in Parser
Uses a custom YAML parser written in TypeScript -- no js-yaml or other external libraries needed. Runs entirely in your browser.
How to Use YAML/JSON Converter
The YAML/JSON Converter lets you seamlessly transform data between YAML and JSON formats with a single click. Everything runs in your browser so your configuration files and secrets are never uploaded anywhere. This tool is essential for developers working with Kubernetes, Docker Compose, CI/CD pipelines, and APIs.
Open the YAML/JSON Converter
Navigate to the YAML/JSON converter from the developer tools menu. The tool operates entirely in your browser, keeping all configuration data private and secure on your local machine.
Paste Your Input Data
Paste your YAML or JSON content into the input area. The tool automatically detects the format and prepares the appropriate conversion direction, or you can manually select the source format.
Select Conversion Direction
Choose whether to convert from YAML to JSON or from JSON to YAML. The tool supports bidirectional conversion so you can switch between formats as needed for your project requirements.
Configure Output Options
Adjust settings such as indentation level, whether to use compact or expanded JSON output, and YAML-specific options like flow style or block style for the generated output.
Copy or Download the Result
Review the converted output in the result panel, then copy it to your clipboard or download it as a file. The output is properly formatted and ready for use in your projects.
Common Use Cases
Kubernetes Configuration
Convert between YAML manifests and JSON representations for Kubernetes resources when switching between kubectl apply and API-based deployment workflows.
CI/CD Pipeline Configuration
Transform CI/CD configuration between formats when migrating pipelines between platforms like GitHub Actions (YAML) and custom JSON-based systems.
API Development
Convert YAML-based OpenAPI specifications to JSON for consumption by code generators, documentation tools, or API gateway configurations.
Docker Compose Management
Transform Docker Compose YAML files to JSON for programmatic manipulation or validation using JSON Schema-based tooling.
Pro Tips
- -YAML is sensitive to indentation, so always verify the converted YAML output uses consistent spacing before pasting it into configuration files.
- -Use this tool to convert complex Kubernetes manifests to JSON when you need to process them programmatically with tools like jq.
- -When converting JSON to YAML, review multi-line strings and special characters, as they may need YAML-specific syntax like literal or folded block scalars.
- -Bookmark this tool for quick format switching when working across projects that use different configuration file formats.
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