URL Encoder / Decoder
Convert text to URL-safe format (Percent-encoding) and back.
Secure client-side processing for developers and SEO professionals.
Convert text to URL-encoded format
Encoded Output
Enter text to see URL encoded output...
Standard Compliant
Adheres to RFC 3986 standards for URI Generic Syntax. Ensures your URLs work correctly across all browsers and servers.
Client-Side Security
All processing happens locally in your browser immediately. Your data is never sent to our servers.
Universal Compatibility
Works perfectly for query parameters, API calls, and specialized character sets like emojis or non-Latin scripts.
Understanding URL Encoding
URL encoding, technically known as Percent-encoding, is a method to encode arbitrary data in a Uniform Resource Identifier (URI). This is essential because URLs can only be sent over the Internet using the US-ASCII character set.
Characters outside the ASCII set, as well as reserved characters (like ?, &, /, :), must be converted into a valid ASCII format to be interpreted correctly by web servers. The encoding consists of a % symbol followed by the two-digit hexadecimal representation of the character's value.
When to use it?
- Query Strings: When passing data in the URL (e.g.,
?query=hello worldbecomes?query=hello%20world). - Form Data: Browsers automatically encode form data before submission (application/x-www-form-urlencoded).
- API Requests: Ensuring special characters in parameters don't break the endpoint structure.