Encode & Decode

URL Encoder/Decoder

Encode or decode URL parameters with special characters. Essential for web development and API testing.

URL Encoder

Encode Mode

Original Text

URL Encoded Result

Quick Examples

Query Parameters

Original:name=John Doe&age=30&city=New York

Encoded:name%3DJohn%20Doe%26age%3D30%26city%3DNew%20York

Special Characters

Original:hello world!@#$%

Encoded:hello%20world%21%40%23%24%25

Unicode Characters

Original:中文测试

Encoded:%E4%B8%AD%E6%96%87%E6%B5%8B%E8%AF%95

When to Use URL Encoding

Common Use Cases:

• Query parameters in URLs
• Form data submission
• API request parameters
• Special characters in URLs
• International characters (Unicode)

Characters That Need Encoding:

Space → %20

! → %21

& → %26

= → %3D

About URL Encoding

URL encoding (also called percent encoding) is a mechanism to encode information in a Uniform Resource Identifier (URI) under certain circumstances. It's used when a URL contains special characters that have specific meanings in URLs, or when the URL contains characters that are not allowed in URLs.

Why URL Encoding is Important

Special Characters: Characters like spaces, &, =, ?, # have special meanings in URLs
International Support: Non-ASCII characters need encoding to work properly
Data Integrity: Ensures data is transmitted correctly in HTTP requests
API Compatibility: Many APIs require proper URL encoding for parameters

Common Use Cases

Encoding query parameters in GET requests
Processing form data in web applications
Building dynamic URLs with user input
API development and testing
Handling international characters in URLs