Mimic any binary to PNG.
A PNG tool that embed binary in IDAT chunk to generate image and extract binary from IDAT chunk within image.
Due to image size, IDAT chunk size may be larger than binary size, in which case difference will be padded with zero. When extracting binary from image, need to know length of zero padding, so use gAMA (gamma value) chunk to store length.
Output image is square, with width and height approximately equal to square root of binary size divided 3.
Requirements
| Property | Value |
|---|---|
| Color | 24 bit RGB |
| Alpha | No |
| Filter per Row | No |
| Chunks | IHDR gAMA IDAT IEND |
See Deno Document for details.