Free Online YAML to JSON Converter
YAML configs often need conversion to JSON — for API payloads, programmatic processing, or validation in JSON-only tools. Paste your YAML directly or upload a .yaml file, then choose between pretty-printed or compact JSON output with one click.
When You Need YAML to JSON
REST APIs expect JSON. JSON validators are more common than YAML equivalents. Most languages have robust JSON parsers. Upload your .yaml or .yml config file and convert it to JSON for seamless integration and debugging.
Frequently Asked Questions
Can I upload a YAML file?
Yes. Click "Upload .yaml" to load a .yaml or .yml file from your device. The contents will fill the input area automatically.
Will converting lose any data?
Values and structure are preserved. YAML comments are discarded. Anchors and aliases are resolved to their full form.
Does this handle multi-document YAML?
The tool processes the first document. For files with --- separators, convert each document separately.
What if my YAML has syntax errors?
Syntax errors (inconsistent indentation, improper quoting) are reported with line numbers.