YAML to JSON
Convert YAML to JSON instantly in your browser. Transform YAML configuration files and data structures into valid JSON format with one click
CODE JSON
YAML→JSON JSON→YAML
Tip: paste YAML on the left — JSON output updates instantly.
Runs 100% Locally in Your Browser
This tool processes your data entirely on your device. Nothing is uploaded, stored, or sent to any server.
No Uploads
Privacy First
Secure by Default
Related Tools
JSON Beautifier Paste your minified or messy JSON and get clean, properly indented output for easier reading, debugging, and development
JSON Minify Convert formatted or messy JSON into inline JSON instantly. Minify JSON by removing unnecessary whitespace and generate a compact single-line string
CSS Minifier Paste your CSS and get a compact, minified version instantly. Remove comments, whitespace, and redundant characters to reduce file size and improve page load performance
CSS Beautifier Paste minified or messy CSS and get clean, properly indented output instantly. Format your stylesheets for easier reading, debugging, and development
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialisation format that uses indentation instead of brackets, widely used in configuration files.
How to convert a YAML file to JSON online?
Paste your YAML into the input and the tool instantly outputs equivalent valid JSON.
What is the difference between YAML and JSON?
YAML is more human-friendly with indentation-based structure and supports comments; JSON uses braces and brackets, has no comments, and is more widely supported in APIs.
What YAML syntax commonly causes conversion errors?
Inconsistent indentation (tabs vs spaces), duplicate keys, and unquoted special characters like colons are the most common causes of YAML parse errors.
Why is YAML used for configuration files instead of JSON?
YAML supports comments, is easier to read and write by hand, and handles multi-line strings more naturally — making it preferable for human-edited configs.
Is my YAML data kept private during conversion?
Yes. The js-yaml library converts your data entirely in-browser — nothing is sent to any server.