This URL actually retrieves a document named "new pricing.htm" from the ASCII Control Characters Encoding So you can use %20 in place of a space when passing your request to the server. A space position in the character set is 20 hexadecimals. You can't type a space in a URL directly. One of the most common special characters is a white space. The encoding notation replaces the desired character with three characters: a percent sign and two hexadecimal digits that correspond to the position of the character in the ASCII character set.
A complete encoding table is given below. These characters should also always be encoded. These character present the possibility of being misunderstood within URLs for various reasons.
Unsafe characters − These are space, quotation marks, less than symbol, greater than symbol, pound character, percent character, Left Curly Brace, Right Curly Brace, Pipe, Backslash, Caret, Tilde, Left Square Bracket, Right Square Bracket, Grave Accent. All of these can have different meanings inside a URL so need to be encoded. Reserved characters − These are special characters such as the dollar sign, ampersand, plus, common, forward slash, colon, semi-colon, equals sign, question mark, and "at" symbol. This range is part of the ISO-Latin character set and includes the entire "top half" of the ISO-Latin set 80-FF hex (128-255 decimal).
Non-ASCII control characters − These are characters beyond the ASCII character set of 128 characters. Character ranges 00-1F hex (0-31 decimal) and 7F (127 decimal). These characters include −ĪSCII control characters − Unprintable characters typically used for output control. URL encoding is the practice of translating unprintable characters or characters with special meaning within URLs to a representation that is unambiguous and universally accepted by web browsers and servers.
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