JSON <> YAML Converter

Convert structured data between JSON and YAML formats.

JSON Input
YAML Output

More DevOps Utilities

JSON <> CSV

Spreadsheet data converter.

JSON Formatter

Beautify & Validate JSON.

Text Encoding

Base64 & URL Decode.

Configuration Management Simplified: The Bridge Between Code and Ops

Modern infrastructure runs on configuration files. Whether you are defining Kubernetes pods, GitHub Actions workflows, or Docker Compose services, you need robust data serialization. Our JSON to YAML Converter is the essential utility for DevOps engineers and Full Stack developers, allowing seamless translation between the strict logic of JSON and the human-readable simplicity of YAML.

The Battle of Formats: JSON vs usage

JSON (The Data Standard)

JavaScript Object Notation is the universal language of APIs. It is strict, predictable, and everywhere.

  • ✓ Strict Syntax: Requires double quotes and braces.
  • ✓ No Comments: Pure data only, no explanations.
  • ✓ Best For: API Payloads, Database Storage, Machine-to-Machine.

YAML (The Human Standard)

YAML Ain't Markup Language is built for people. It is clean, minimal, and indentation-based.

  • ✓ Clean Syntax: No brackets or quotes needed usually.
  • ✓ Comments Supported: You can explain your config inline with #.
  • ✓ Best For: Config Files, CI/CD Pipelines, Infrastructure as Code.

Common Use Cases

Kubernetes & Docker

Convert generated JSON specs into readable `deployment.yaml` or `compose.yaml` files.

CI/CD Pipelines

Transform huge GitHub Actions or GitLab CI JSON outputs into manageable YAML configs.

OpenAPI / Swagger

Switch your API documentation source from verbose JSON to clean YAML for easier editing.

Client-Side Logic: Your Configs Stay Private

Configuration files often contain secrets, keys, and sensitive infrastructure details. That's why our tool operates 100% Client-Side. The conversion happens in your browser's memory. We never see, store, or transmit your sensitive YAML/JSON data.

Frequently Asked Questions

Why do DevOps engineers prefer YAML over JSON?

YAML (YAML Ain't Markup Language) is designed for human readability. It uses indentation instead of brackets and quotes, making configuration files (like Kubernetes manifests or Ansible playbooks) much cleaner and easier to review in pull requests. Comments are also supported in YAML, which are crucial for documentation but forbidden in standard JSON.

How does the converter handle comments?

When converting YAML to JSON, comments are stripped out because JSON does not support comments standardly. When converting JSON to YAML, the structure is preserved, but you cannot 'restore' comments that didn't exist in the JSON source. We recommend keeping a master YAML file if comments are important.

Is indentation significant in YAML?

Yes, absolutely. YAML relies on whitespace indentation to define structure (nesting). Using tabs instead of spaces, or inconsistent spacing (e.g., mixing 2 and 4 spaces), will cause syntax errors. Our converter automatically generates valid, consistent 2-space indentation standard for modern DevOps.

Can I convert large Kubernetes files?

Yes. Since the conversion happens client-side in your browser, you can convert massive config files without uploading them. The limit is only your browser's memory, so files up to 10MB usually process instantly.

What happens to data types like Dates?

YAML has native support for timestamps (e.g., 2023-10-25), while JSON typically treats them as strings. When converting from YAML to JSON, strict timestamps are usually stringified to ISO 8601 format to ensure compatibility with JSON parsers.

Does it support Multi-Document YAML?

Standard JSON represents a single root object. If you have a multi-document YAML file (separated by ---), converting to JSON will typically result in a JSON Array containing each document as an object, or it might error depending on the parser mode. Our tool focuses on 1-to-1 conversion for single documents.

Why did my numeric keys become strings?

In JSON, keys must always be strings (e.g., "200": "OK"). In YAML, keys can technically be numbers or booleans. When converting YAML to JSON, keys are automatically quoted to comply with strict JSON standards.

Can I use this for CloudFormation or AWS SAM templates?

Yes! AWS CloudFormation supports both JSON and YAML. Many developers use this tool to convert legacy JSON templates into modern YAML templates, which are much shorter and easier to manage.

Is the output compatible with Swagger/OpenAPI?

Yes. Swagger (OpenAPI) specifications can be written in either JSON or YAML. You can use this tool to convert a generated JSON Swagger spec into YAML to make it easier for your team to edit manually.

Is my data secure?

100% Secure. The conversion logic runs entirely in your web browser using JavaScript libraries. No code, keys, or configurations are ever sent to our servers or third parties.