@kdfrawg Indeed. I was reading the documentation of the payment terminal I want to communicate with when I tried to add a logo to the receipt printout. The documentation said that the image data needs to be base64-encoded bitmap data, but it didn't say in which bitmap format it needs to be. In the end I found out the correct format, it needs to be *monochromatic* PC bitmap in "Windows 3.x format". Like writing down that would have required too much work… ?

@kdfrawg Indeed. I was reading the documentation of the payment terminal I want to communicate with when I tried to add a logo to the receipt printout. The documentation said that the image data needs to be base64-encoded bitmap data, but it didn't say in which bitmap format it needs to be.

In the end I found out the correct format, it needs to be monochromatic PC bitmap in "Windows 3.x format". Like writing down that would have required too much work… ?

2017-06-01T12:17:21Z