ART (AOL compressed image)

ART, also known as AOL compressed image or Johnson-Grace compressed file, is a lossy-compressed image file format used by America Online (AOL).

Identification
Files begin with ASCII characters " ".

Sample files

 * http://samples.libav.org/image-samples/ART/
 * https://telparia.com/fileFormatSamples/image/aolART/

Software

 * Graphics Workshop Professional w/ Plugin
 * Older Acdsee Software compatibility

Resources

 * Wikipedia article
 * ART Compression, from the Encyclopedia of Graphics File Formats