URL Encoder/Decoder

🔗 What is URL Encoding?

URL encoding (percent encoding) is a method to encode special characters in URLs so they can be safely transmitted over the internet. It replaces unsafe ASCII characters with a '%' followed by two hexadecimal digits.

For example, a space character is encoded as '%20'.

⚙️ How This URL Encoder/Decoder Works

  • Encode:Convert characters (such as spaces, symbols, and non-ASCII text) into their percent-encoded form for safe transmission in URLs.
  • Decode:Restore percent-encoded URLs back to their original format for readability or further processing.
  • UTF-8 Support:All encoding/decoding uses UTF-8 by default.
  • Copy with Notification:Click any output field to copy results with visual feedback.
  • Local Processing:All conversions happen in your browser for privacy and speed.

📚 Example

Input:

  • Hello, world! こんにちは

Encoded output:

Hello%2C%20world%21%20%E3%81%93%E3%82%93%E3%81%AB%E3%81%A1%E3%81%AF

💡 Common Use Cases

  • Web Development:Encode URLs for HTTP requests, query strings, and form data.
  • API Integration:Safely transmit data containing special characters via APIs.
  • Internationalization:Handle non-ASCII characters in URLs for global applications.
  • Debugging:Decode URLs to inspect or modify their contents.

❓ Frequently Asked Questions

Q: What characters are encoded?

A: All non-ASCII and reserved characters (such as spaces, /, ?, &, =) are percent-encoded.

Q: Is this tool safe for sensitive data?

A: Yes, all processing is done locally in your browser. No data is sent to any server.

Q: Can I use this tool offline?

A: Yes, it works entirely in your browser without an internet connection.

🎯 Best Practices

  • Always Encode URLs:Encode all URLs before sending them in HTTP requests or storing them in databases.
  • Decode for Readability:Decode URLs before displaying them to users or for debugging.
  • Test with Edge Cases:Test with special characters, Unicode, and long URLs.
  • Security Awareness:Never trust unvalidated URLs from untrusted sources.

🔗 Related Tools

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