JPEGT
From Just Solve the File Format Problem
JPEGT (JPEG Transparent or JPEG with Transparency) is a image format created by myself. It's the successor of Hemera Photo-Object.
It's just JPEG with transparency, a feature that didn't come out until earlier with JNG and Hemera Photo-Object.
Likewise, it's being used for clip art, logos, photos, you name it.
Identification
The file starts with JPGT%% and then 0x31 0x41 0x59 0x26 0x53 0x58 which it's the first 12 BCD encoded digits of pi.
Then the JPEG picture comes in, and the PNG mask comes in. The idea was also used by Hemera Photo-Object, but the signature is not the same, but how it works it's the same.
Software
It supports PNG files for encoding and JPEGT files for viewing and decoding back to PNG.
