Ascii85 Codec

Ascii85 (Base85) streams for Java.

Java
Library

Ascii85 Codec provides an InputStream and an OutputStream that read and write Ascii85, also known as Base85. It is more compact than Base64 and drops into any Java I/O pipeline as a standard filter stream.

Try it

InputSpace compression (y): shorter for runs of spaces, but not Adobe-compatible

Ascii85

<~87cURD_*#TDfTZ)+T~>

Input13 bytes

Ascii8517 chars +31%

Base6420 chars +54%

Counting encoded characters only, without the <~ ~> markers or line breaks.

Runs a JavaScript port of the library and was tested against it to give the same results, errors included.

Encode a file

try (InputStream in = new FileInputStream("image.png");
     OutputStream out = new Ascii85OutputStream(
         new FileOutputStream("image.a85"))) {
    in.transferTo(out);
}