YAML to JSON Converter
Convert YAML configuration files and data to JSON with one click. Paste your YAML, hit Convert, and get properly formatted JSON output. The tool uses the js-yaml library for accurate parsing of all standard YAML features — anchors, aliases, multi-line strings, flow sequences, and tagged types.
This is useful when you need to feed YAML-formatted configuration into a system that expects JSON, or when you want to validate that your YAML parses the way you expect. The JSON output is pretty-printed with two-space indentation for readability.
All processing happens in your browser. Your data is never uploaded anywhere.
By The Paper Room Editorial Team — Developer Tools
Frequently asked questions
Does this support all YAML features?▼
The tool supports YAML 1.2 features including anchors, aliases, multi-line strings (literal and folded), flow mappings and sequences, and standard tags. Custom tags and some YAML 1.1-specific features may not be supported.
What happens with YAML-specific types like dates?▼
YAML dates (e.g., 2024-01-15) are parsed as JavaScript Date objects and serialized as ISO date strings in JSON. If you want them as plain strings, quote them in your YAML input.
Can I convert multi-document YAML?▼
This tool converts a single YAML document. If your file contains multiple documents separated by ---, only the first document will be converted. Split multi-document files before converting.