YAML ↔ JSON - Free Online Tool | PivaBox

Convert between YAML and JSON formats in real-time

YAML ↔ JSON Converter — Convert Between YAML and JSON Formats Online

  1. Paste your YAML or JSON data into the input panel. The tool automatically detects the format of your input — YAML uses indentation for structure, while JSON uses braces and brackets.
  2. Click the conversion button to instantly transform your data. YAML is converted to compact, valid JSON with proper quoting and escaping. JSON is converted to clean, human-readable YAML with consistent indentation.
  3. Copy the output or download it as a file. The tool handles nested objects, arrays, multi-line strings, anchors, and complex data structures commonly found in API specs, config files, and CI/CD pipelines.

Frequently Asked Questions

Is the YAML ↔ JSON Converter free?

Yes, completely free with no limits. Convert as many files as you need — perfect for developers working with OpenAPI specs, Kubernetes manifests, Ansible playbooks, Docker Compose files, or CI/CD configurations.

Are my configuration files uploaded anywhere?

No. All conversion happens locally in your browser. Your config files, API specs, and data structures never leave your device — critical for proprietary configurations, internal service definitions, and credentials.

What are the key differences between YAML and JSON, and when should I use each?

YAML (.yml/.yaml) is a human-friendly data format that uses indentation instead of brackets, supports comments with #, and allows anchors (&) and aliases (*) for reusing data. It is widely used in DevOps (Kubernetes, Ansible, Docker Compose, GitHub Actions) and configuration management. JSON (.json) is a stricter, machine-optimized format using braces and brackets — it is the standard for REST APIs, web application data exchange, and NoSQL databases. Use YAML when humans need to read and edit config files frequently; use JSON for programmatic data exchange, API payloads, and when strict validation is required. This converter handles all valid YAML 1.2 features including multi-line strings (| and >), anchors, tags, and complex nested mappings.