JSON To URL QueryString

Turn a JSON object into a URL query string. Conversion stays in your browser.

JSON

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Query string

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Arrays Nested keys Encode Spaces as + Leading ? Skip null Skip empty

Ready. Your JSON stays in this browser.

How it works: Paste a JSON object. Nested objects become filter[color] or filter.color. Arrays can repeat the same key, use [], use [0], or join with commas. Encode turns reserved characters into percent sequences. Spaces as + is the form-urlencoded style.

Privacy: Conversion runs in your browser. Uploaded files are decoded locally with the encoding you choose and are not sent to a server.