URL encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) because URLs can only be sent over the Internet using the ASCII character-set. Since URLs often contain characters outside the ASCII set, the URL has to be converted into a valid ASCII format. URL encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits.
Use following tool to encode or decode string according to RFC 3986 standard
According to RFC 3986, the characters in a URL have to be taken from a defined set of unreserved and reserved ASCII characters. Any other characters are not allowed in a URL.
The unreserved characters can be encoded, but should not be encoded. The unreserved characters are:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
a b c d e f g h i j k l m n o p q r s t u v w x y z
0 1 2 3 4 5 6 7 8 9 - _ . ~
The reserved characters have to be encoded only under certain circumstances. The reserved characters are:
! * ' ( ) ; : @ & = + $ , / ? % # [ ]
! | # | $ | & | ' | ( | ) | * | + | , | / | : | ; | = | ? | @ | [ | ] |
%21 | %23 | %24 | %26 | %27 | %28 | %29 | %2A | %2B | %2C | %2F | %3A | %3B | %3D | %3F | %40 | %5B | %5D |