Query Params to JSON
Convert URL query strings to JSON with nested parameter support.
Runs locally in your browser. Your input is not uploaded.
Query String to JSON Converter parses URL query parameters into structured JSON, including support for nested keys like user[name]=John. Useful for debugging API requests, inspecting OAuth callbacks, and understanding complex query strings.
Frequently Asked Questions
What is a query string? +
The part of a URL after the "?" character containing key=value pairs, e.g. ?name=John&age=30.
Are nested params supported? +
Yes, params like user[name]=John are parsed into nested JSON objects automatically.
Is my data private? +
Yes, all parsing happens in your browser. No data is sent to any server.
How to Use
- 1
Paste a URL or query string
Enter a full URL or just the query string portion (e.g. ?name=John&age=30&tags[]=a).
- 2
Parse
Click "Parse" to instantly convert the query parameters into a structured JSON object with proper types.
- 3
Copy the JSON
Copy the parsed JSON output and use it in your code, API testing, or debugging.
Frequently Asked Questions
- The part of a URL after the ? character containing key=value pairs. For example: ?name=John&age=30.