Query Parameters to JSON Converter

How to Use Query Parameters to JSON:

Paste a URL with query parameters (e.g., https://example.com?name=John&age=30&city=NYC) or just the query string (?name=John&age=30) into the input field. Select your desired output format (pretty JSON, minified, PHP array, or JavaScript object) and click Convert. The tool will parse all parameters and convert them to your chosen format.

API Debugging

Convert REST API query parameters to JSON format for easier inspection and debugging of endpoint requests.

WordPress Permalinks

Parse WordPress URL parameters and convert them to structured JSON for custom query handling and debugging.

Data Transformation

Convert URL-based data structures to JSON format for use in JavaScript applications and API integrations.

How Does Query Parameter Parsing Work?

Query parameters in URLs follow a key-value format separated by ampersands. The parser extracts these pairs, URL-decodes the values, and converts them into structured JSON format. Arrays and nested objects can be represented using bracket notation.

Parameter Extraction

The tool extracts key-value pairs from the query string, handling URL encoding and special characters automatically.

Value Decoding

URL-encoded values (like %20 for spaces) are automatically decoded to their original format during conversion.

Format Options

Supports multiple output formats: pretty JSON (formatted), minified (compact), PHP arrays, and JavaScript objects for different use cases.

Using Query Parameters in JavaScript:

const url = 'https://example.com?name=John&age=30&city=NYC';

const params = new URLSearchParams(new URL(url).search);

const obj = Object.fromEntries(params);

console.log(JSON.stringify(obj, null, 2));

Output

{
  "name": "John",
  "age": "30",
  "city": "NYC"
}

Parse query parameters from URL and convert to JSON object

Frequently asked questions

Yes, the tool supports bracket notation for arrays and nested objects (e.g., ?user[name]=John&user[age]=30).

The tool supports pretty JSON (formatted), minified JSON (compact), PHP arrays, and JavaScript object notation.

Yes, the tool automatically decodes URL-encoded values (like %20 for spaces) during the conversion process.

Collect Better Feedback with Userback

This query parameter converter helps you parse URL data efficiently, but gathering feedback about URL-related issues in your applications requires comprehensive context. Userback captures detailed visual feedback when users report broken links, malformed URLs, or API endpoint problems. With automatic screenshot capture, browser information, console logs, and network requests, you get complete visibility into URL-related issues. When developers need to report query parameter parsing errors or suggest improvements to URL handling workflows, Userback enables them to submit detailed feedback that includes the exact URLs, browser state, and all technical context in a single shareable report.