🌐 URL Encoder / Decoder

Percent-encode URLs and query parameters, or decode percent-encoded strings back to plain text. Essential for web development and API testing.

What is URL Encoding?

URL encoding (also called percent-encoding) 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, they must be converted to a valid ASCII format.

How It Works

URL encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits. For example, a space becomes %20, and the "@" symbol becomes %40.

Common Uses