Code Lab · Bench
Query String ↔ JSON
Parse & build URL query params
Input
Output
About this bench
About Query String ↔ JSON
Parse a URL query string into JSON, or build a query string from JSON — perfect for debugging links and APIs.
Input
Paste the code or structured data you want to inspect, format, convert or validate.
Result
A local validation, transformation or copy-ready result based on the selected options.
Limits
This bench does not execute or deploy your project. Validate generated output in the real target environment before production use.
How to use Query String ↔ JSON
- 01Paste a query string or a JSON object above.
- 02Choose the conversion direction.
- 03Review the output.
- 04Copy it out.
Frequently asked questions
Is my data private?
Nothing is uploaded. This tool runs entirely in your browser, so your data is processed on your own device and never sent to a server.
Is it free?
Yes — it is free with no sign-up, no watermark and no account-based quota. Your browser, device memory and the bench's stated file limits still determine how much it can process at once.
Should the query string include a question mark?
You can paste standard query parameters; the tool parses them into a JSON object and can build encoded parameters from JSON in reverse.