Tool overview
What is Query Params ↔ JSON?
A Query Params ↔ JSON is a tool that helps you parse URL query strings to JSON objects and serialize back.
Why use Query Params ↔ JSON?
It improves readability and workflow speed when you need to parse URL query strings to JSON objects and serialize back—entirely in your browser with no server uploads.
Key Features
Instant syntax highlighting and error catching, client-side privacy, and one-click copy for query Params ↔ JSON workflows. Parse URL query strings to JSON objects and serialize back
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.
Official Documentation & References
Authoritative specifications and platform documentation for this utility.