URL Encoder Tool: Complete Guide to Online URL Encoding and Decoding

What is URL Encoding?

URL encoding (also known as percent-encoding) is a way to convert special characters into URL-safe format. It converts non-ASCII characters and special characters to %XX format, ensuring URLs can be transmitted and parsed correctly.

Why Do You Need URL Encoding?

• Special Character Handling - Handle special characters in URLs
• Chinese Support - Support Chinese and other non-ASCII characters
• Query Parameters - Encode parameters in query strings
• Security - Prevent URL injection attacks
• Compatibility - Ensure cross-platform compatibility

Encoding Features

• URL Encoding - Convert text to URL encoded format
• URL Decoding - Convert URL encoding back to original text
• Query Parameter Encoding - Specifically handle query parameters
• Path Encoding - Handle URL path parts
• Batch Processing - Batch encode multiple strings

Common Encoded Characters

• Space - %20 or +
• Chinese Characters - %E4%B8%AD%E6%96%87
• Special Symbols - &, =, ?, #, /
• Reserved Characters - :, @, !, $, ', (, ), *, +, ,, ;

Use Cases

• Web Development - Handle URL parameters and query strings
• API Development - Encode API request parameters
• Form Processing - Handle form submission data
• Search Functionality - Encode search keywords
• File Upload - Handle filename encoding

Encoding Standards

• RFC 3986 - URL standard specification
• UTF-8 Encoding - Support multilingual characters
• Percent Encoding - %XX format
• Query String - application/x-www-form-urlencoded

Usage Tips

• Distinguish between URL encoding and HTML entity encoding
• Pay attention to + sign handling in query parameters
• Use UTF-8 encoding for Chinese characters
• Test if encoded URLs are correct
• Note encoding differences between browsers