Online URL encoder and decoder
Use this tool for encoding or decoding URL query parameters. It's compatible with the format used in POST data from web forms, allowing you to encode or decode such data as needed.
What is URL encoding and decoding?Link to this section
URL encoding is a process essential for transmitting data over the internet, converting characters into a web-friendly format using percent encoding. It transforms reserved, unprintable, or non-ASCII characters into ASCII alphanumeric characters and symbols like hyphen, underscore, tilde, and dot. Characters are converted into bytes, each byte is then represented by two hexadecimal digits preceded by a percent sign (%).
How to encode URLsLink to this section
Our tool simplifies URL encoding. Input any URL, and it converts reserved or non-ASCII characters to bytes, represented in hexadecimal form preceded by a percent sign. For example, the
@ character is converted to
Decoding URLsLink to this section
URL decoding reverses the encoding process. The decoder interprets percent-encoded strings, converting hexadecimal byte representations back into ASCII characters. For instance,
%40 decodes back to
Programming language supportLink to this section
urllib.parse.unquote(), and Java’s
Why URL encoding mattersLink to this section
URL encoding ensures data integrity and readability in web communication. It’s vital for HTML form submissions and in the broader scope of Uniform Resource Identifiers (URIs). It helps distinguish between reserved characters used in their literal sense and those with special meanings, like the forward slash (/) in URLs.
Security considerationsLink to this section
Always validate and sanitize inputs, whether URL-encoded or not, to avoid security risks like injection attacks.