SwissQrBill.Output.PngOutput (swiss_qr_bill v0.1.2)

Generates PNG output by rasterizing the PDF via pdftocairo. The PDF is the source of truth — PNG is a pixel-perfect rasterization.

Requires pdftocairo (from poppler-utils) to be installed.

Summary

Generates the payment part as a PNG binary. Uses PdfOutput as source and rasterizes via pdftocairo.

@spec render(
  map(),
  keyword()
) :: {:ok, binary()} | {:error, String.t()}

Generates the payment part as a PNG binary. Uses PdfOutput as source and rasterizes via pdftocairo.