JSON to YAML

This converter turns JSON into YAML while preserving the original structure. The output is easier to read and to annotate with comments, which makes it a good fit for Kubernetes manifests, CI configs and application settings. Conversion runs entirely in your browser, and if it fails the error points to the position in the source data.

Open in the workbench Runs locally · nothing is uploaded

How to use it

1
Paste or upload JSON
Paste JSON into the editor or drop in a .json file. The data is read locally and never uploaded.
2
Convert to YAML
The converter maps objects, arrays and scalars to their YAML equivalents with clean indentation.
3
Review and adjust
Check the output, then copy it into your manifest or config file. Multi-line strings and special characters are quoted safely.
4
Troubleshoot if needed
If the source JSON is invalid, the error points to the position that broke parsing.

Key features

Structure preserved

Objects, arrays and nested values keep their shape and types across the conversion.

Readable output

YAML indentation is generated so the result is easy to read and to comment by hand.

Safe quoting

Strings that need quoting — including multi-line and special characters — are emitted correctly.

Local conversion

Everything runs in your browser; your configs are never uploaded.

Clear errors

Invalid source JSON produces a position, not a vague failure.

Round-trip friendly

Pairs with the YAML to JSON converter for the reverse direction.

Common errors & troubleshooting

! YAML is whitespace-sensitive; do not re-indent the output with tabs, as tabs are not allowed for indentation.
! A JSON array of objects becomes a YAML list of mappings — handy for config sections.
! Numbers, booleans and nulls are emitted as native YAML types, not quoted strings.
! If the output looks wrong, validate the input JSON first — the cause is usually the source, not the conversion.

Frequently asked questions

Is JSON to YAML conversion done on a server?

No. The conversion runs entirely in your browser, so your data never leaves your device.

Will the YAML keep my data types?

Yes. Numbers, booleans and null are written as native YAML scalars, and objects and arrays keep their structure.

Can I convert YAML back to JSON?

Yes — use the YAML to JSON converter for the reverse direction; the two tools are designed to round-trip.

Why is some text quoted in the output?

YAML requires quoting for strings that could be misread as other types or that contain special characters. The converter quotes them so the value survives the round-trip.

Related tools

JSON Formatter

Format, beautify and validate JSON in your browser. Errors point to the exact line and column, and you can indent with 2 spaces, 4 spaces or a tab.

JSON to JSON Schema

Infer a JSON Schema from a sample JSON document, merging similar fields and marking required properties.

jq Online

Run jq 1.8 in your browser (WebAssembly build) — no install required. Edit the expression and see the result instantly.