About YAML to JSON Converter
Convert YAML documents to JSON format instantly in your browser. This tool is perfect for developers working with configuration files, API specifications, CI/CD pipelines, and data interchange. All processing happens client-side — your data never leaves your device.
Features
- Pure Client-Side: No data sent to any server. Your YAML stays private.
- File Upload & Drag-Drop: Upload .yaml, .yml, or .txt files directly.
- YAML Validation: Clear error messages with line numbers when parsing fails.
- Flexible Output: Choose pretty-printed or compact JSON, with 2 or 4 space indentation.
- Sort Keys: Optionally alphabetically sort all object keys for consistency.
- One-Click Actions: Copy result to clipboard or download as a .json file.
- Real-Time Stats: See key count, arrays, objects, and output size at a glance.
How to Use
- Paste your YAML into the input area, or drag & drop a file.
- Choose your preferred output options (indent, mode, sort).
- Click Convert to JSON.
- Copy or download the resulting JSON.
Common Use Cases
- CI/CD Configs: Convert GitHub Actions, GitLab CI, or Docker Compose YAML to JSON for API consumption.
- API Specs: Transform OpenAPI/Swagger YAML definitions to JSON.
- Kubernetes: Convert K8s manifest YAML to JSON for programmatic tooling.
- Data Migration: Prepare YAML datasets for systems that only accept JSON.
FAQ
Is this tool free?
Yes, 100% free. No sign-up, no limits.
Is my data private?
Absolutely. All conversion happens in your browser. We never see your data.
What YAML versions are supported?
We support YAML 1.2 via the js-yaml library, handling anchors, aliases, and all standard types.
Can I convert multiple files?
You can process one file at a time. For batch conversion, consider scripting with yq or similar tools.
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