Character Encoding

URL Character Encoding

 Many time in URL we see eg. www.example.com/page?val=cat%20%2E%2E%2F

This complex %20 sign are nothing but Character Encoding in Hex form. 

 

Special             Hex                 Ascii

Characters

(                       %28                 36

)                       %29                 38

$                      %24                 36

&                     %26                 38

+                      %2B                43

,                       %2C                44

/                       %2F                 47

:                       %3A                58

;                       %3B                59

=                      %3D                61

?                      %3F                 63

@                     %40                 64

Space               %20                 32

“”                     %22                 43         Quotation Marks

<                      %3C                60

>                      %3E                 62

#                      %23                 35

%                     %25                 37

{                      %7B                123

}                      %7D                125

|                       %7C                124

\                       %5C                92

^                      %5E                 94

~                      %7E                 126      Tidle

[                       %5B                91

]                       %5D                93

`                       %60                 96        Grave Accent

Rest for a-z we simply use ascii value (97-122)(a-z)

Eg. script ==> %3C%115%99%114%116%112%116%3E

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