JSON to Query String

Paste JSON, configure how nested objects and arrays are encoded, and generate a URL query string. Runs entirely in your browser.

Private by architecture: All processing is 100% client-side memory. Your data never leaves this browser tab.

Direction

Prefix

Nested objects

Arrays

Encode Nulls Sort

JSON input

0 lines · 0 charsJSON

Query string output

0 charsQuery String

Example

Default options applied to a typical API filter payload:

{
  "page": 2,
  "limit": 20,
  "tags": ["api", "json"],
  "filter": {
    "status": "active"
  },
  "enabled": true,
  "empty": null
}

produces:

page=2&limit=20&tags=api&tags=json&filter%5Bstatus%5D=active&enabled=true

Can I convert query strings back to JSON?: Yes! Click the ⇌ swap button or toggle the Direction dropdown to parse query strings back into structured JSON.
Does this send my JSON anywhere?: No. Parsing and conversion happen in your browser with plain JavaScript. Nothing is uploaded.
What happens to null and empty values?: By default, null values are excluded and empty strings are included as an empty parameter value. Both are configurable above.
How are nested arrays of objects handled?: Each array item is encoded using the selected array style, recursing into the nested-object style for object items.