Result appears here after you select
{ } How to use
- Paste a flat JSON object.
- Select Process, then copy the query string.
{ } How it works
JSON to Query String 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
- JSON object — paste or type your input in the left panel (use Sample for an example)
Output
TXT text — copy or download it from the Output panel.
{ } Common uses
- Turn a set of filters or parameters into a shareable link.
- Build the query part of an API request by hand.
- Reproduce a request from a saved parameter object.
{ } Limitations
- The input must be a JSON object; an array or a bare value is rejected. A value that is itself an object or an array is written into the parameter as JSON text.
- Spaces are encoded as + rather than %20, which is the form-encoding convention every server accepts in a query string.
- The leading ? is not included, so you add it when you join the query to a URL.
{ } 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.
What happens to a null value?
It becomes the text "null" as the parameter value. If you want the parameter left out entirely, remove the key before converting.