What happens if a key appears multiple times?

Duplicate keys are grouped into a JSON array of values, following standard query string parsing conventions.

Digital Tools Kits300 Free Online Tools

Developer ToolsPopular Tool100% In-Browser & Private

Query String Parser

Parse URL query strings into key-value tables and structured JSON objects.

How to Use Query String Parser

1Paste a query string (e.g. ?category=tools&sort=asc) or full URL.
2View the decoded key-value table.
3Copy parameters as a formatted JSON object.

Key Features & Benefits

Decodes URL query parameters into an interactive table
Exports parameters directly as formatted JSON
Supports duplicate keys as array collections
Automatic URL decoding of spaces, symbols, and emojis

About Query String Parser

Paste any query string or full URL to extract all parameters into an organized table and formatted JSON object. Automatically decodes percent-encoded characters and handles array parameters.

Unlike traditional web tools that send your personal data, uploaded photos, or sensitive text to remote cloud servers, our Query String Parser operates strictly inside your client browser sandbox. This guarantees high processing speeds without network throttling, and ensures your data privacy is completely preserved.

Frequently Asked Questions

Found this tool helpful?

Share Query String Parser with your colleagues, teammates, or friends!

Related Developer Tools

Explore more tools to boost your productivity.

View all

Popular

JSON Formatter

Format, beautify, indent, and prettify messy JSON data with syntax highlights.

developer toolsUse Tool

Popular

JSON Validator

Validate JSON syntax and identify syntax errors with line and column numbers.

developer toolsUse Tool

Popular

Base64 Encoder

Encode text strings and files to standard or URL-safe Base64 format.

developer toolsUse Tool

Loading Tool Workspace...

Developer ToolsPopular Tool100% In-Browser & Private

Query String Parser

Parse URL query strings into key-value tables and structured JSON objects.

Paste Query String or Full URL

Decoded Parameters Table (5)

Key	Value
utm_source	google
utm_medium	cpc
utm_campaign	summer2026
tags	nextjs
tags	react

Parsed JSON Object

{
  "utm_source": "google",
  "utm_medium": "cpc",
  "utm_campaign": "summer2026",
  "tags": [
    "nextjs",
    "react"
  ]
}

How to Use Query String Parser

1Paste a query string (e.g. ?category=tools&sort=asc) or full URL.
2View the decoded key-value table.
3Copy parameters as a formatted JSON object.

Key Features & Benefits

Decodes URL query parameters into an interactive table
Exports parameters directly as formatted JSON
Supports duplicate keys as array collections
Automatic URL decoding of spaces, symbols, and emojis

About Query String Parser

Paste any query string or full URL to extract all parameters into an organized table and formatted JSON object. Automatically decodes percent-encoded characters and handles array parameters.