This application translates a String into its Base64 encoded version and vice versa. It knows several variants:
- Plain Base64 simply translates the binary encoding of the string into a 6-bit character string. It differs from Standard Base64 in that no padding is applied.
- Standard Base64 is based on Plain Base64, but adds characters to reach a multiple of 24 bit output length. The output conforms to RFC 4648.
- MIME is like Standard Base64 but breaks the output into lines of at most 76 characters. The output satisfies RFC 2045.
- Radix64 is an extension of the MIME encoding. To ensure message integrity, it adds, respectively checks an encoded CRC24 checksum at the end of the encoded string. This encoding is used for OpenPGP.
- Base64url generates a string suitable for URLs. It is unpadded and unwrapped, but differs from Plain Base64 by using a different mapping.
- Base64XML is unpadded and unwrapped like Plain Base64, but uses a different mapping to be suitable for XML identifiers.
Note that, while the implemented routines produce output that comply with the mentioned RFC, it does not follow all of the recommendations when it comes to treating input. Don't use this application for validation of Base64 encoded Strings.
- Java Runtime Environment 1.8 or higher
Base64Tool is written entirely in Java, it should run on most systems. No additional libraries are used except for those that come with the JRE. However, some functions use recently added methods to overcome the limitations of Java when it comes to unsigned number primitives.
Run the Base64Tool.jar package, select your encoding flavor and enter your
data. The encoding/decoding direction is determined automatically: the text
field which received the last key stroke is considered as input, the other
one as output.
Error messages should be self explanatory.
Base64Tool has been developed using JDK 1.8 and Eclipse Mars for Java. No further dependencies are needed to build the application.
Copyright (c) 2016, David Lichti
All rights reserved.
The Base64Tool is published and licensed under the BSD-2-Clause license. A
copy of the license text can be found in LICENSE.md.
David Lichti [dlichtistw@gmx.de]