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Query String Parser

Advanced query string parser that extracts and decodes URL parameters into readable key-value pairs. Automatically handles URL encoding, array parameters, nested objects, and special characters. Perfect for debugging URLs, analyzing web traffic, testing API endpoints, and understanding URL structures. Features include automatic URL decoding, pretty-printed output with syntax highlighting, copy individual parameters or all decoded values, support for array notation (param[]=value), handling of duplicate keys, and validation of malformed query strings. The tool parses complex query strings with multiple formats, shows parameter counts, detects encoding issues, provides JSON export of parsed parameters, and displays both encoded and decoded values side-by-side. Essential for web developers debugging routing issues, QA engineers testing URLs, API developers analyzing requests, marketers checking tracking parameters, and anyone working with URL parameters. Supports standard query string format, PHP-style arrays, and Rails-style nested parameters.

100% Secure
Lightning Fast
100% Free
Client-Side Processing
Supports both full URLs and query strings (with or without the ? prefix)

Features

🔍 Smart Parsing

Automatically detects and extracts query strings from full URLs or standalone query strings.

🔓 URL Decoding

Automatically decodes URL-encoded parameters and shows both encoded and decoded values.

📋 Multiple Formats

Export parameters as JSON or tab-separated table format.

🎯 Individual Copy

Copy individual parameter values or the entire parsed output.

💡 How to Use

  • 1.Paste a full URL or just the query string (with or without the ? prefix)
  • 2.The tool will automatically parse all parameters and display them in a table
  • 3.Both URL-encoded and decoded values are shown for easy comparison
  • 4.Copy individual values, the entire table, or export as JSON
  • 5.Supports hash fragments (#) which are displayed separately

How to Use Query String Parser

1

Paste URL

Enter full URL or query string

2

Auto-Parse

See decoded parameters

3

View Details

Inspect each parameter

4

Export

Copy as JSON or text

Features

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Before/After Compare

View side-by-side comparison

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Privacy First

All processing happens in your browser

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Instant Download

Download processed images immediately

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Mobile Friendly

Works on all devices

Frequently Asked Questions

Q:What is a query string?

A:The part of a URL after the ? symbol containing parameters: example.com?param1=value1¶m2=value2

Q:How are special characters handled?

A:Automatically URL-decodes special characters like %20 (space), %2B (plus), and others.

Q:Can it parse array parameters?

A:Yes, supports multiple formats: param[]=1¶m[]=2 or param=1¶m=2 (creates array).

Q:What about nested objects?

A:Supports nested parameter notation like user[name]=John creating hierarchical structures.

Popular Tool Combinations

Maximize your workflow efficiency by combining Query String Parser with these complementary tools.

1

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🔗 Query String Parser🔨 Query String Builder🔗 URL Encoder/Decoder

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Why Choose Our Query String Parser?

Our tool is completely free, requires no registration, and processes everything in your browser for maximum privacy and speed. No file size limits, no watermarks, just pure functionality.

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