Developer tool
Convert YAML to JSON
Parse YAML and format equivalent JSON with a locally loaded YAML parser.
Runs locally in your browser
Your text is not uploaded.
Simple steps
How it works
- 01
Paste YAML into the editor.
- 02
Convert it to formatted JSON and review any syntax message.
- 03
Copy the JSON result.
Good to know
Frequently asked questions
Which YAML version is supported?
The parser supports common YAML 1.2 documents and reports syntax errors from its parser.
Are comments included in JSON?
No. JSON contains the parsed data values, not YAML comments.
Can YAML contain multiple documents?
This tool converts a single YAML document at a time.
Is the parser downloaded on every tool page?
No. Its code is lazy-loaded only when the YAML to JSON page processes input.
Is YAML sent to a server?
No. Parsing and conversion happen locally in your browser.