PDF-417
One PDF-417 symbol is capable of encoding more than 1100 bytes, 1800 ASCII characters, or 2700 digits, depending on the selected data compression mode.
In the Barcode PDF-417 Demo Sample the length of encodable string is restricted to a value of 1000 characters. In other Barcode PDF-417 Demo Samples can be encoded to a max. of 1669 letters and 2446 digits. The number of encodable characters does not depend on the values of Horizontal and Vertical Image Size.