URL Encoding
URL encoding, also known as percent-encoding, is a mechanism for converting characters in a URL into a safe format that can be transmitted over the internet. It replaces unsafe or reserved characters (like spaces, ampersands, or non-ASCII symbols) with a percent sign (%) followed by two hexadecimal digits representing the character's ASCII code. This ensures URLs are properly formatted and interpreted by web browsers, servers, and applications without errors or security issues.
Developers should learn and use URL encoding whenever handling URLs in web development, API requests, or data transmission to prevent issues like broken links, injection attacks, or misinterpretation of special characters. It is essential in scenarios such as constructing query strings in HTTP requests, passing parameters in web forms, or encoding file paths in URLs to ensure compatibility across different systems and protocols.