URL encoding is the process of converting characters into a format that can be safely transmitted in a URL.
It replaces unsafe or special characters with a % followed by two hexadecimal digits.
URL decoding reverses this process, converting encoded characters back into their original form.
Safe Transmission: URLs can only be sent over the Internet using certain characters; encoding ensures that special characters (like spaces, &, /, =) don't break the URL structure.
Data Integrity: Prevents misinterpretation of query strings, parameters, and form data.
Standard Compliance: Ensures URLs conform to standards defined by HTTP/HTTPS protocols.
Security: Helps prevent injection attacks by controlling how data is formatted in the URL.
Use built-in functions in programming languages (e.g., encodeURIComponent/decodeURIComponent in JavaScript, URLEncoder/URLDecoder in Java, urllib.parse in Python).
Encode user input, query parameters, form submissions, or dynamic parts of URLs before attaching them to a URL string.
Decode incoming URL parameters or API responses when extracting and using the data in your application.
When passing special characters (like spaces, ?, &, #) inside URLs.
When building query strings for GET requests in APIs or websites.
When redirecting users with dynamic URLs that contain input data.
When handling form submissions using the GET method, where data is appended to the URL.