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🔗 URL Encoder Decoder

Online URL encoding and decoding, supports Chinese URL conversion

🔒 All conversions are done locally in your browser, no data uploaded to server

Output Result

📚 User Guide

What is URL Encoding?

URL encoding (Percent-encoding) is a method to convert special characters into percent signs (%) plus two hexadecimal digits for safe data transmission in URLs.

Why need URL Encoding?

  • URLs only allow ASCII characters
  • Some characters have special meaning in URLs (such as &, ?, =)
  • Chinese and other non-ASCII characters need encoding to use in URLs
  • Spaces and special symbols need escaping

Common Encoding Examples

  • Space → %20
  • Chinese "Hello" → %E4%BD%A0%E5%A5%BD
  • & → %26
  • = → %3D
  • ? → %3F
  • / → %2F

Use Cases

  • Pass Chinese in URL parameters
  • GET request parameter encoding
  • Search engine keywords
  • Filename contains special characters

Notes

  • Do not encode repeatedly, avoid %25xx situation
  • Different parts of URL may need different encoding
  • Some characters (such as - _ . ~) usually do not need encoding