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How to Build Query Strings - Step by Step Guide

Step 1

Enter Base URL (Optional)

Start by entering your base URL if you want to see the complete URL with query parameters:

•
API endpoints: Enter your API base URL like https://api.example.com/search
•
Website pages: Enter page URLs to build filtered or search URLs
•
Query string only: Leave blank to generate just the query string parameters

Example: Base URL Input

Enter your base API or website URL:

https://api.example.com/search
Step 2

Add Query Parameters

Add key-value pairs for your query parameters. Each parameter needs a key and value:

•
Click "Add" button: Add new parameter rows as needed
•
Enter keys and values: Fill in parameter names and their values
•
Remove unwanted: Click the trash icon to remove parameters

Example: Adding Parameters

Sample query parameters:

Key
Value
query
javascript tutorials
category
programming
page
1
Step 3

View Generated Query String

The tool automatically generates your query string with proper URL encoding:

•
Automatic encoding: Special characters are properly URL encoded
•
Preview table: See how each value is encoded before and after
•
Real-time updates: Changes appear instantly as you type

Example: Generated Query String

The output query string:

query=javascript%20tutorials&category=programming&page=1
Step 4

Copy or Download

Get your query string ready for use:

•
Copy query string: One-click copy of just the query parameters
•
Copy full URL: Copy the complete URL with base URL and parameters
•
Download: Save as text file for later use or documentation

Frequently Asked Questions

What is a query string and why do I need to build one?

A query string is a set of parameters added to a URL to pass data to web servers or APIs. They appear after the ? in a URL. You need them for API requests, search functionality, filtering data, tracking parameters, and passing information between pages.

Does the tool automatically encode special characters?

Yes! The query string builder automatically encodes all special characters, spaces, and symbols according to URL encoding standards. For example, spaces become %20, and special characters are converted to their encoded equivalents.

Can I add multiple parameters with the same key?

Currently, each key should be unique. If you need multiple values for the same parameter (like multiple tags), you can either use comma-separated values or array notation (e.g., tags[]=value1&tags[]=value2). You can also use our URL Parser to analyze complex query strings.

Is the generated query string ready for use in APIs?

Absolutely! The generated query string follows standard URL encoding rules and is ready to use in API requests, HTTP calls, fetch requests, or any web application. You can copy it directly into your code or API testing tools.

Can I see how values are encoded?

Yes! The preview table shows both the original value and the encoded version for each parameter, helping you understand exactly how the URL encoding works and verify the output is correct.

Is the query string builder completely free?

Yes, completely free with unlimited parameters and no usage limits. No registration required, and you can build as many query strings as you need for your projects.

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