JSON ↔ YAML
Local tool · Inputs are never uploaded
Network Check LabPRACTICAL TOOL LABCheck current network

LOCAL STRUCTURED TEXT CONVERTER

JSON ↔ YAML

Convert JSON and a single YAML document locally

All input is processed in this browser and is never sent to a server or written to local storage.

Waiting for JSON or YAML input.

YAML

Usage and safety notes

One document only

YAML input must contain one document. Duplicate keys, unknown tags, and parse errors report a line and column.

Numbers never change silently

Unsafe integers and decimal spellings that would change value are rejected.

Data only

Custom YAML tags are not loaded and input is never executed. Aliases are disabled to prevent expansion abuse.