{ } How to use

Paste your YAML.
Select Process — a syntax error reports the line and column where it was found.
Copy the JSON, or download it as a .json file.

{ } How it works

YAML to JSON works on the text you provide. Select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.

Input

YAML input — paste or type your input in the left panel (use Sample for an example)

Output

JSON — copy it, download it, or switch the Output panel to Tree view to explore it.

{ } Common uses

Read a CI or Kubernetes file as JSON so you can query or diff it.
Feed a YAML configuration to code or an API that only accepts JSON.
Check that a hand-edited YAML file parses the way you expect.

{ } Limitations

Comments are dropped, because JSON has no way to express them. Keep the YAML file as the copy you edit.
A file holding more than one document, separated by ---, is rejected. Convert one document at a time.
YAML types that JSON does not have are converted rather than kept: a timestamp becomes an ISO 8601 string, and a set becomes an object.

{ } FAQ

Is my data uploaded to a server?

No. Everything runs locally in your browser — your files never leave your device.

Can I process more than one file at once?

This tool works on one input at a time.

Is this tool free?

Yes — it’s completely free and needs no sign-up.

My YAML had comments — where did they go?

JSON cannot represent a comment, so they are dropped. Nothing else about the document changes.

Why did a date turn into a quoted string?

YAML understands timestamps and JSON does not, so the value is written out as an ISO 8601 string.