FFabreco View source

Browser converter

x-www-form-urlencoded to JSON converter

Form data, query string, or URL
JSON output
{}

Your formatted JSON will appear here.

Paste encoded data and convert it—nothing leaves this browser.

100% private · runs locally

Fast, private conversion.
Right in your browser.

Paste form data, a query string, or an entire URL. Get readable JSON instantly—without uploads, accounts, or data leaving your browser.

How it works

From tangled query string to useful JSON.

The converter follows standard form-encoding rules, including percent escapes, plus-sign spaces, empty values, and repeated fields.

  1. 01

    Paste anything useful

    Use raw x-www-form-urlencoded data, a query string beginning with ?, or a complete URL.

  2. 02

    Decode correctly

    Encoded characters become readable, values can contain equals signs, and URL fragments are ignored.

  3. 03

    Copy structured JSON

    Repeated field names become arrays, so no submitted value is silently discarded.

Raw form body

name=Ana+Silva&active=true

Full URL

https://example.com/?page=2&sort=new

Repeated fields

tag=design&tag=development