Encode Text to Base62

Base62 Encoder transforms a string so that it conforms to the Base62 Data Encodings specification.

What is Base 62 encode

Base62 is not for encryption purposes and is not secure. It is an encoding mechanism only. 

Base62  is a collection of encoding and decoding techniques that convert data between binary (hexadecimal) and alphanumeric text formats (ASCII). Base62 allows for data compression, is simple to recognize, and can be used to build an anti-auto-monitoring encoding method for transmission systems. However, the absence of verification renders it incapable of identifying transmission errors. 

Base62 encoded data is a string of character that contains only a-z, A-Z, 0-9. The string contains text-printable characters.

alphanumeric = 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz

Base62 Character Encoding

Base62 can encode any binary data! Since binary data, typically unreadable by humans, is the result of most cryptographic operations, an encoding strategy is required to convert the zeroes and ones into something that can be recorded or shared with others. 

When converting a Base 10 integer to its Base 62 encoding, URL shortening often uses the Base62 encoding. Base62 is similar to Base64, except that it does not have the +, /, and = symbols. Base62 comprises 62 characters, 26 upper letters from A to Z, 26 lower letters from a to z, and 10 integers from 0 to 9.

Many URL shorteners use a Base 62 algorithm.

The encoding principle

The technique for Base62 encoding as follows:

• convert a ByteArray to an Integer
• print that Integer using base 62 and a special alphabet

Decoding then becomes:

• parse the representation using base 62 and a special alphabet
• convert that Integer to a ByteArray

The 62 digit long alphabet to use is equal to

'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'

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Binary Coded Decimal is a type of binary encoding that uses 4 binary numbers to represent the 10 digits from 0 to 9 in a decimal number.