What is URL Encoder?
A URL Encoder (or Percent Encoder) is a tool that converts characters into a format that can be transmitted over the Internet. URLs can only be sent over the Internet using the ASCII character-set. Since URLs often contain characters outside the ASCII set, the URL must be converted into a valid ASCII format. URL encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits. For example, a space becomes %20. This tool allows you to encode any string for use in a URL query parameter or path, and decode it back to its original form.
Input Formats
- Full URLs
- Query string parameters
- Text with special characters
Output Results
- Percent-encoded string
- Decoded plain text
- Copy-ready result
Key Features
Who is this for?
API Development
Developers encoding JSON payloads or filters to pass them safely in URL query parameters.
Digital Marketing
Marketers fixing broken UTM tracking links caused by unencoded spaces or special characters.
Data Transmission
Sending complex data (like email addresses or foreign characters) via URL without breaking the link.
How to Use
Paste your text or URL component into the input area.
Select 'Encode' to convert special characters to %XX format.
Select 'Decode' to convert back to readable text.
Copy the result.
Examples
Input
Hello World!Output
Hello%20World%21Common Errors
- Encoding the entire URL (including https://) instead of just parameters
- Double encoding (%2520 instead of %20)
- Confusing + and %20 for spaces
Code Examples
JavaScript
const encoded = encodeURIComponent('Hello World!');
const decoded = decodeURIComponent(encoded);Python
import urllib.parse
encoded = urllib.parse.quote('Hello World!')
decoded = urllib.parse.unquote(encoded)