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Query String Encode
Encode query string parameters using percent-encoding for safe URL transmission
Query String (Plain)
Input
Mode
Query String (Encoded)
Output
What is Query String Encode?
This Query String Encode tool helps you encode URL parameters and query strings using percent-encoding. When building URLs with query parameters, special characters like spaces, ampersands (&), equals signs (=), and question marks (?) must be properly encoded to prevent breaking the URL structure. This tool converts these characters to %XX format, ensuring your query strings work correctly in APIs, tracking links, form submissions, and web applications.
How to Use
1
Paste query string parameters or values to encode
2
Click Encode to convert to percent-encoded format
3
Copy the encoded output for use in your URLs
4
Append to URLs after ? or & for query parameters
Common Use Cases
Encode query parameters for GET requests
Build search URLs with encoded search terms
Create UTM tracking links with encoded campaign names
Encode form data for URL submission
Prepare API query parameters with special characters
Encode filter and sort parameters for web applications
Key Features
Encodes all special characters in query strings
Handles spaces, ampersands, equals, and symbols
Supports Unicode and emoji in parameters
One-click copy to clipboard
Client-side processing - privacy-friendly
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