Query String Parser

Decode URL parameters for APIs and analytics.

Examples

About Query String Parser

The Query String Parser is an essential tool for web developers working with URLs and API parameters. It extracts and parses query string parameters from URLs, converting them into structured JSON objects. Perfect for debugging URL parameters, API development, and understanding query string structure.

Use Cases:

  • Parsing URL parameters from API requests
  • Debugging query string issues in web applications
  • Converting query strings to JSON for processing
  • Understanding URL parameter structure
  • Extracting parameters from logged URLs
  • Testing query string parsing logic

Key Features:

  • Automatic query string parsing
  • Parameter extraction and organization
  • JSON conversion for easy processing
  • Multiple value handling (arrays)
  • URL decoding of encoded values
  • 100% browser-based - no server processing

Working with parameter filters and route rules? Validate your query matching pattern in regex testing playground before implementing parser logic.

Converting parsed params into payloads? Use JSON syntax checker to ensure valid objects before API calls.

If incoming params are percent-encoded, decode them first with URL encoding and decoding utility and re-check the parsed output here.

By Muhammad Abdullah Rauf · Founder, EverydayTools.proUpdated 2026-05-18

What is a query string parser?

A query string parser decodes URL query parameters (?key=value) into key-value pairs or JSON for API debugging.

Paste a query string or full URL to extract parameters with URL decoding—runs locally without sending data to a server.

Parse ?foo=bar&baz=1 into structured key-value output for APIs and analytics.

How to use Query String Parser

  1. Paste query string or URL

    Include the ? prefix or a full URL—the tool isolates the query portion.

  2. Review decoded pairs

    Check percent-decoded values and duplicate keys.

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Frequently Asked Questions

Does this parse the full URL?

It focuses on query parameters. Use the URL parser to inspect scheme, host, path, and fragment.

Privacy, accuracy, and trust

Parsing only—does not validate API security or auth tokens.

Part of Developer Tools

Related Tools

More free tools for the same workflow.

URL Parser — Break Down URL Components

Parse any URL into scheme, host, port, path, query params, and hash. No upload—runs in your browser. Free for API and OAuth debugging.

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