{ } How to use

Paste a query string, with or without the leading ?.
Select Process to get an object of parameters.

{ } How it works

Query String to JSON works on the text you provide. Select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.

Input

Query string — paste or type your input in the left panel (use Sample for an example)

Output

JSON — copy it, download it, or switch the Output panel to Tree view to explore it.

{ } Common uses

Read the parameters of a long URL as structured data.
Turn a captured request into a fixture or a test case.
Check which parameters a link is actually carrying.

{ } Limitations

Every value comes out as a string, and + is decoded as a space.
A parameter repeated in the query keeps only its last value, because the result is a plain object. Repeated parameters need an array, which this does not produce.

{ } FAQ

Is my data uploaded to a server?

No. Everything runs locally in your browser — your files never leave your device.

Can I process more than one file at once?

This tool works on one input at a time.

Is this tool free?

Yes — it’s completely free and needs no sign-up.

Can I paste a whole URL?

Paste only the part after the ?. A full URL would be read as one parameter name.