Dot - Barcode Type¶

DotCode uses a grid of dots in a rectangular formation to encode characters up to a maximum of approximately 450 characters (or 900 numeric digits). The symbology supports ECI encoding and GS-1 data encoding. By default, Zint will produce a symbol that is approximately square; however, the width of the symbol can be adjusted by using the --cols= option or by setting option_2. Outputting DotCode to raster images (PNG, GIF, BMP, PCX) will require setting the scale of the image to a larger value than the default (e.g., approximately 10) for the dots to be plotted correctly. Approximately 33% of the resulting symbol is comprised of error correction codewords.