JSON to YAML Converter: Free, Private, In Your Browser
The JSON to YAML converter parses valid JSON and serializes it as YAML with js-yaml. YAML represents structured data with indentation rather than JSON's braces and quotes, making it easier to read or use in YAML-based workflows. Output uses 2-space indentation and a 120-column line width by default. Paste JSON, review the result, and copy it where needed.
The JSON to YAML converter turns JSON input into YAML output in your browser. It parses the JSON and serializes the data as YAML with js-yaml, giving developers a readable representation to copy into a YAML-based workflow. YAML uses indentation to express structure rather than JSON's braces and quotes.
During conversion, JSON objects and arrays remain structured data in the YAML output, while strings, numbers, booleans, and null are represented as YAML values. The output uses 2-space indentation and a 120-column line width by default. These formatting settings help keep the generated YAML readable, and the conversion steps include the option to adjust available settings.
JSON and YAML are both used to represent structured data, but their syntax looks different. JSON uses braces, brackets, and quoted strings, while YAML commonly uses indentation and less punctuation. Converting JSON to YAML is useful when a tool or workflow expects YAML, or when you want a different format for reviewing, sharing, or documenting data.
The conversion runs entirely in your browser: your input is processed on your device and is not uploaded, stored, or sent to a server. There is no signup required, and once the page has loaded, the converter works offline without a server connection.
This tool is useful for developers and DevOps engineers who need to move data between formats, prepare snippets for documentation, or inspect a conversion before using it. Whether you are new to JSON and YAML or work with structured data regularly, you can paste JSON, review the generated YAML, and copy the result.
Step 1: Paste your JSON input into the converter. Make sure the content is valid JSON before converting.
Step 2: Review the available formatting options. The defaults are 2-space indentation and a 120-column line width.
Step 3: Convert the input to YAML. The tool parses your JSON and serializes the data using js-yaml.
Step 4: Review and copy the YAML result. You can paste it into your code, documentation, ticket, or another tool that accepts YAML.
Use case: Move JSON data into a system or workflow that accepts YAML instead. Convert the input and copy the YAML output where it is needed.
Use case: Compare a YAML value you were given with YAML generated from its JSON original. Reviewing both representations can help you spot differences.
Use case: Prepare JSON data for documentation, a ticket, or a commit message. The YAML output gives you another readable format to share.
Use case: Sanity-check a JSON-to-YAML conversion before pasting the result into code. Reviewing the output can help you catch unexpected formatting.
Use case: Create a YAML version of a JSON snippet for a team review. The indentation-based format can be easier to scan when discussing structured data.
Use case: Convert JSON examples into YAML for a workflow that expects that format. The converter provides consistent default indentation and line width.