Supported Input Formats
?name=john&age=30Query string only (with or without ?)
https://example.com?id=123Full URL with parameters
?tags=a&tags=b&tags=cArray parameters (same key repeated)
How to Convert URL Parameters to JSON
- 1
Paste your URL or query string
Copy the full URL or just the query string portion (everything after the ?) from your browser address bar, API logs, or application code. The tool accepts both formats, so you do not need to strip the base URL first. - 2
Review parsed parameters
The converter automatically detects each key-value pair separated by ampersands. Encoded characters like %20 or %2F are decoded to their readable form. Duplicate keys are grouped into arrays automatically. - 3
Copy the JSON output
The structured JSON object appears instantly in the output panel. Each query parameter becomes a key in the JSON object with its decoded value. Click the copy button to grab the result for your project. - 4
Use the JSON in your workflow
Paste the JSON into your code editor, API testing tool, or configuration file. The output is valid JSON ready for use with JavaScript, Python, or any language that parses JSON natively.
Common Use Cases
Debugging API Requests
Migrating GET Requests to POST Bodies
Extracting Tracking Parameters
Testing and Documentation
Why Convert URL Parameters to JSON?
URL query strings are one of the most common data transport formats on the web. Every time you click a search result, filter a product catalog, or share a tracked link, query parameters carry key-value data inside the URL. While browsers and servers parse these strings natively, developers often need the data as a structured object for debugging, logging, or integration work. The URL Parameters to JSON Converter extracts every parameter from a URL and outputs clean, valid JSON you can use immediately.
This tool handles edge cases that manual parsing misses. Repeated keys are merged into arrays, percent-encoded characters are decoded, and nested bracket notation is resolved into proper JSON structures. Whether you are working with a short two-parameter URL or a complex analytics redirect packed with UTM tags and session tokens, the converter processes everything client-side in your browser with zero data sent to external servers. Pair it with the JSON to URL Params converter for round-trip workflows, or pipe the output into the JSON Formatter for pretty-printed results.
For developers building API integrations, this converter bridges the gap between GET-style query strings and JSON-based POST bodies. Instead of manually rewriting parameters, paste the URL and get the JSON payload ready for your cURL command or fetch request. Combined with the URL Encoder/Decoder for handling special characters and the JSON Path Finder for navigating deeply nested results, FindUtils gives you a complete toolkit for URL and data transformation tasks.
How It Compares
Developers commonly parse URL parameters using built-in language methods like JavaScript's URLSearchParams, Python's urllib.parse, or PHP's parse_str. These work well inside code but require a runtime environment and boilerplate setup. When you just need to quickly inspect a URL from a log file, Slack message, or browser console, an online converter is faster. Unlike code-based parsing, this tool also handles visual formatting, automatic array detection, and percent-decoding in a single step with no setup required.
Compared to other online URL parsers, the FindUtils converter processes everything in the browser -- your URLs never leave your machine. Many competing tools send data to a server, which raises privacy concerns when working with URLs that contain API keys, session tokens, or personally identifiable information. This client-side approach also means there are no usage limits and no account required, making it a practical everyday utility for any developer or QA engineer.