Convert a flat JSON object into a URL-encoded query string with repeated keys for arrays. JSON to Query String is a free online tool from the ToolsRift Code Formatters collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
An array value is expanded into repeated key=value pairs, for example {"t":["a","b"]} becomes t=a&t=b, which most servers parse back into a list.
Yes. Keys and values are passed through encodeURIComponent, so spaces, ampersands and other reserved characters are safely percent-encoded.
Nested object values are serialized to JSON and encoded as a single value. For best results provide a flat object of simple key-value pairs.