As I understand, characters in URL are either reserved (have a special meaning) or unreserved (do not have a special meaning). Am I correct that percent-encoding is used in URL if one needs to send literal value of character to web server? For example, if I have a document named document/_with_forward_slash_in_its_name.html in web server root folder, then I should use the URL www.example.com/document%2f_with_forward_slash_in_its_name.html because otherwise web server would think that I'm looking for a file named _with_forward_slash_in_its_name.html from directory document? Is there a difference if this / character is in query string, e.g http://www.example.com/get-page.php?home=document/_with_forward_slash_in_its_name.html?Why there are multiple ways to decode reserved characters, e.g / can be %2F, %2f or %c0%af?
Can a percent encoded slash be used to designate a literal slash in a file name on a web server?
url;url encoding