Tool overview
What is a Query String to JSON Converter?
A query string to JSON converter parses URL search params into structured objects (and serializes JSON back to a query string), including arrays and nested keys.
Why use this Query Params ↔ JSON tool?
Debug tracking links, OAuth redirects, and API callbacks without hand-splitting encoded params—or leaking URLs to a remote parser.
Key Features
Query ↔ JSON modes, arrays/nested keys, percent-encoding awareness, and fully local conversion.
How to Use
Follow these steps to get accurate results from the tool interface above.
- Select Query → JSON to parse a query string, or JSON → Query to serialize an object.
- Paste a full URL or bare query segment (foo=bar&baz=1).
- Inspect decoded keys—duplicate keys become arrays in JSON output.
- Copy encoded output for fetch URLs, curl commands, or API tests.
Query String Syntax Reference
RFC 3986 query component rules and common encoding pitfalls.
| Feature / Context | Valid Syntax Example | Common Pitfall / Invalid Example |
|---|---|---|
| Key-value pairs | name=Ada&role=dev | name=Ada;role=devSemicolons are not standard pair separators—use & between parameters. |
| Percent-encoding | q=hello%20world | q=hello worldSpaces must be encoded as %20 or + depending on context. |
| JSON object input | { "tags": ["a", "b"] } | { tags: ["a"] }JSON → Query requires strict JSON with quoted keys. |
Frequently Asked Questions
Expandable answers for common debugging bottlenecks and data privacy questions.
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Official Documentation & References
Authoritative specifications and platform documentation for this utility.