URL Encode



Url code (also know as percentage code) is generally used to write name identifiers (URNs) and locations (URLs) on the Internet. It consists of unreserved and the reserved characters. Unreserved characters include upper and lower case letters of the alphabet without special characters, numbers from 0 to 9, plus the signs “-“, “_”, “.” and “~”. Reserved characters may have special meanings, in which case they are represented by a hexadecimal number preceded by the “%” character. This coding, given in the following table, usually consists of the sign “%” followed by the hexadecimal number ASCII corresponding to the coded character.

Reserved characters after percent-encoding

! # $ % & ' ( ) * + , / : ; = ? @ [ ]
%21 %23 %24 %25 %26 %27 %28 %29 %2A %2B %2C %2F %3A %3B %3D %3F %40 %5B %5D

Special characters, that are not included in the unreserved characters may be encoded as well.

Further reading

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